./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 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 de0411014dc6a77a3d6f6b87d1d3911a4ed9d471cff70aeb544ffa33b63e5b55 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:10:11,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:10:11,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:10:11,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:10:11,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:10:11,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:10:11,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:10:11,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:10:11,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:10:11,401 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:10:11,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:10:11,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:10:11,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:10:11,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:10:11,405 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:10:11,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:10:11,406 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:10:11,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:10:11,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:10:11,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:10:11,407 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 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 -> de0411014dc6a77a3d6f6b87d1d3911a4ed9d471cff70aeb544ffa33b63e5b55 [2025-03-04 10:10:11,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:10:11,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:10:11,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:10:11,634 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:10:11,634 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:10:11,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2025-03-04 10:10:12,764 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488d07428/6295569c638345cd8a4bd185cfad03fb/FLAGe51a99c9d [2025-03-04 10:10:12,978 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:10:12,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2025-03-04 10:10:12,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488d07428/6295569c638345cd8a4bd185cfad03fb/FLAGe51a99c9d [2025-03-04 10:10:13,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488d07428/6295569c638345cd8a4bd185cfad03fb [2025-03-04 10:10:13,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:10:13,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:10:13,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:10:13,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:10:13,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:10:13,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bef629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13, skipping insertion in model container [2025-03-04 10:10:13,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:10:13,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:10:13,468 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:10:13,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:10:13,494 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:10:13,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13 WrapperNode [2025-03-04 10:10:13,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:10:13,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:10:13,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:10:13,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:10:13,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,521 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2025-03-04 10:10:13,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:10:13,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:10:13,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:10:13,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:10:13,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,543 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 10:10:13,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,546 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:10:13,549 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:10:13,549 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:10:13,549 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:10:13,550 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (1/1) ... [2025-03-04 10:10:13,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:10:13,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:10:13,576 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 10:10:13,578 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 10:10:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:10:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 10:10:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 10:10:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 10:10:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 10:10:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 10:10:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 10:10:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:10:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:10:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:10:13,597 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 10:10:13,664 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:10:13,666 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:10:13,781 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:10:13,781 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:10:13,849 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:10:13,850 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:10:13,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:10:13 BoogieIcfgContainer [2025-03-04 10:10:13,850 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:10:13,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:10:13,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:10:13,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:10:13,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:10:13" (1/3) ... [2025-03-04 10:10:13,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15404dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:10:13, skipping insertion in model container [2025-03-04 10:10:13,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:10:13" (2/3) ... [2025-03-04 10:10:13,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15404dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:10:13, skipping insertion in model container [2025-03-04 10:10:13,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:10:13" (3/3) ... [2025-03-04 10:10:13,859 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2025-03-04 10:10:13,871 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:10:13,873 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-simple-equiv.wvr.c that has 4 procedures, 28 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 10:10:13,873 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:10:13,922 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 10:10:13,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2025-03-04 10:10:13,974 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-03-04 10:10:13,976 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:10:13,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-04 10:10:13,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2025-03-04 10:10:13,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2025-03-04 10:10:13,987 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:10:13,995 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;@39cb6911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:10:13,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 10:10:14,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:10:14,003 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-03-04 10:10:14,003 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:10:14,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:10:14,003 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] [2025-03-04 10:10:14,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:10:14,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:10:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 631863055, now seen corresponding path program 1 times [2025-03-04 10:10:14,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:10:14,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907608207] [2025-03-04 10:10:14,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:10:14,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:10:14,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:10:14,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:10:14,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:10:14,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:10:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:10:14,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:10:14,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907608207] [2025-03-04 10:10:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907608207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:10:14,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:10:14,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:10:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76403010] [2025-03-04 10:10:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:10:14,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:10:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:10:14,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:10:14,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:10:14,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-04 10:10:14,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:10:14,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:10:14,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-04 10:10:14,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:10:14,756 INFO L124 PetriNetUnfolderBase]: 99/196 cut-off events. [2025-03-04 10:10:14,757 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-03-04 10:10:14,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 196 events. 99/196 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 686 event pairs, 36 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 373. Up to 144 conditions per place. [2025-03-04 10:10:14,767 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 20 selfloop transitions, 5 changer transitions 15/43 dead transitions. [2025-03-04 10:10:14,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 202 flow [2025-03-04 10:10:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:10:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:10:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2025-03-04 10:10:14,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2025-03-04 10:10:14,779 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 5 states and 77 transitions. [2025-03-04 10:10:14,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 202 flow [2025-03-04 10:10:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 10:10:14,790 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 83 flow [2025-03-04 10:10:14,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2025-03-04 10:10:14,798 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2025-03-04 10:10:14,798 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 83 flow [2025-03-04 10:10:14,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:10:14,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:10:14,799 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] [2025-03-04 10:10:14,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:10:14,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:10:14,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:10:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1605265105, now seen corresponding path program 2 times [2025-03-04 10:10:14,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:10:14,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763975389] [2025-03-04 10:10:14,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:10:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:10:14,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:10:14,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:10:14,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:10:14,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:10:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:10:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:10:15,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763975389] [2025-03-04 10:10:15,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763975389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:10:15,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:10:15,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:10:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966471091] [2025-03-04 10:10:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:10:15,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:10:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:10:15,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:10:15,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:10:15,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-04 10:10:15,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:10:15,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:10:15,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-04 10:10:15,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:10:15,171 INFO L124 PetriNetUnfolderBase]: 85/171 cut-off events. [2025-03-04 10:10:15,172 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-03-04 10:10:15,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 171 events. 85/171 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 540 event pairs, 4 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 172. Up to 59 conditions per place. [2025-03-04 10:10:15,175 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 23 selfloop transitions, 6 changer transitions 15/47 dead transitions. [2025-03-04 10:10:15,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 242 flow [2025-03-04 10:10:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:10:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:10:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-03-04 10:10:15,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-04 10:10:15,177 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 83 flow. Second operand 5 states and 80 transitions. [2025-03-04 10:10:15,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 242 flow [2025-03-04 10:10:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 219 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-04 10:10:15,179 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 94 flow [2025-03-04 10:10:15,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2025-03-04 10:10:15,180 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2025-03-04 10:10:15,180 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 94 flow [2025-03-04 10:10:15,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:10:15,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:10:15,181 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] [2025-03-04 10:10:15,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:10:15,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:10:15,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:10:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash -533752959, now seen corresponding path program 3 times [2025-03-04 10:10:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:10:15,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365560756] [2025-03-04 10:10:15,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:10:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:10:15,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:10:15,199 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:10:15,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 10:10:15,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:10:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:10:15,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:10:15,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365560756] [2025-03-04 10:10:15,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365560756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:10:15,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:10:15,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:10:15,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960173164] [2025-03-04 10:10:15,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:10:15,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:10:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:10:15,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:10:15,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:10:15,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-04 10:10:15,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:10:15,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:10:15,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-04 10:10:15,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:10:15,485 INFO L124 PetriNetUnfolderBase]: 39/92 cut-off events. [2025-03-04 10:10:15,485 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-04 10:10:15,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 92 events. 39/92 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 235 event pairs, 4 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 87. Up to 37 conditions per place. [2025-03-04 10:10:15,486 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2025-03-04 10:10:15,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 178 flow [2025-03-04 10:10:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:10:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:10:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2025-03-04 10:10:15,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2025-03-04 10:10:15,487 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 94 flow. Second operand 5 states and 67 transitions. [2025-03-04 10:10:15,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 178 flow [2025-03-04 10:10:15,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 160 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-04 10:10:15,489 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2025-03-04 10:10:15,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2025-03-04 10:10:15,490 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2025-03-04 10:10:15,490 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2025-03-04 10:10:15,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:10:15,492 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-03-04 10:10:15,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-04 10:10:15,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-04 10:10:15,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-04 10:10:15,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-04 10:10:15,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:10:15,494 INFO L422 BasicCegarLoop]: Path program histogram: [3] [2025-03-04 10:10:15,497 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:10:15,497 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:10:15,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:10:15 BasicIcfg [2025-03-04 10:10:15,501 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:10:15,502 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:10:15,502 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:10:15,502 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:10:15,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:10:13" (3/4) ... [2025-03-04 10:10:15,504 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:10:15,507 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 10:10:15,507 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 10:10:15,507 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-04 10:10:15,509 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-03-04 10:10:15,510 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 10:10:15,510 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-04 10:10:15,510 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 10:10:15,563 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:10:15,563 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:10:15,563 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:10:15,564 INFO L158 Benchmark]: Toolchain (without parser) took 2238.62ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 95.3MB in the end (delta: 10.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2025-03-04 10:10:15,564 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:10:15,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.63ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 94.2MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:10:15,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.51ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:10:15,565 INFO L158 Benchmark]: Boogie Preprocessor took 25.62ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 92.0MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:10:15,565 INFO L158 Benchmark]: IcfgBuilder took 301.28ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 71.1MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 10:10:15,565 INFO L158 Benchmark]: TraceAbstraction took 1649.21ms. Allocated memory is still 142.6MB. Free memory was 71.1MB in the beginning and 100.8MB in the end (delta: -29.7MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2025-03-04 10:10:15,565 INFO L158 Benchmark]: Witness Printer took 61.22ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 95.3MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:10:15,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.63ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 94.2MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.51ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.62ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 92.0MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 301.28ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 71.1MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1649.21ms. Allocated memory is still 142.6MB. Free memory was 71.1MB in the beginning and 100.8MB in the end (delta: -29.7MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * Witness Printer took 61.22ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 95.3MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 58]: 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 7 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 317 IncrementalHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 0.8s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 10:10:15,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE