./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --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/pthread-C-DAC/pthread-demo-datarace-1.i -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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:00:00,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:00:00,267 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:00:00,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:00:00,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:00:00,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:00:00,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:00:00,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:00:00,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:00:00,296 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:00:00,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:00:00,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:00:00,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:00:00,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:00:00,298 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:00:00,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:00:00,298 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:00:00,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:00:00,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:00:00,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:00:00,298 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:00:00,299 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:00:00,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:00:00,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:00:00,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:00:00,300 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 -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2025-03-04 10:00:00,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:00:00,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:00:00,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:00:00,548 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:00:00,548 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:00:00,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-03-04 10:00:01,784 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a930c536/dae1482d90ad4eba8c9867bdaaf94edb/FLAG6beae52fc [2025-03-04 10:00:02,055 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:00:02,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-03-04 10:00:02,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a930c536/dae1482d90ad4eba8c9867bdaaf94edb/FLAG6beae52fc [2025-03-04 10:00:02,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a930c536/dae1482d90ad4eba8c9867bdaaf94edb [2025-03-04 10:00:02,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:00:02,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:00:02,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:00:02,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:00:02,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:00:02,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30798d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02, skipping insertion in model container [2025-03-04 10:00:02,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:00:02,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:00:02,842 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:00:02,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:00:02,927 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:00:02,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02 WrapperNode [2025-03-04 10:00:02,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:00:02,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:00:02,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:00:02,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:00:02,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,960 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-03-04 10:00:02,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:00:02,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:00:02,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:00:02,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:00:02,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,983 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-04 10:00:02,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,987 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:00:02,995 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:00:02,995 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:00:02,995 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:00:02,996 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (1/1) ... [2025-03-04 10:00:02,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:00:03,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:03,018 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 10:00:03,021 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 10:00:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 10:00:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 10:00:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:00:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2025-03-04 10:00:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2025-03-04 10:00:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:00:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 10:00:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:00:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:00:03,040 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 10:00:03,137 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:00:03,139 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:00:03,286 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:00:03,287 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:00:03,369 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:00:03,370 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:00:03,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:00:03 BoogieIcfgContainer [2025-03-04 10:00:03,370 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:00:03,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:00:03,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:00:03,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:00:03,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:00:02" (1/3) ... [2025-03-04 10:00:03,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629e8e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:00:03, skipping insertion in model container [2025-03-04 10:00:03,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:02" (2/3) ... [2025-03-04 10:00:03,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629e8e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:00:03, skipping insertion in model container [2025-03-04 10:00:03,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:00:03" (3/3) ... [2025-03-04 10:00:03,380 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2025-03-04 10:00:03,393 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:00:03,395 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-1.i that has 2 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-04 10:00:03,395 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:00:03,437 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 10:00:03,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2025-03-04 10:00:03,501 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-03-04 10:00:03,505 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:00:03,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-03-04 10:00:03,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2025-03-04 10:00:03,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2025-03-04 10:00:03,516 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:00:03,524 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;@586b9c8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:00:03,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-04 10:00:03,534 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:00:03,535 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2025-03-04 10:00:03,536 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:00:03,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:03,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:03,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:03,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1134636833, now seen corresponding path program 1 times [2025-03-04 10:00:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931973664] [2025-03-04 10:00:03,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:00:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:03,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 10:00:03,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 10:00:03,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:00:03,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:03,724 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 10:00:03,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:03,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931973664] [2025-03-04 10:00:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931973664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:03,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:03,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:00:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594000850] [2025-03-04 10:00:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:03,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:00:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:03,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:00:03,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:00:03,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-03-04 10:00:03,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 10:00:03,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:03,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-03-04 10:00:03,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:03,842 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2025-03-04 10:00:03,842 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:00:03,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 135 events. 61/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 407 event pairs, 27 based on Foata normal form. 9/143 useless extension candidates. Maximal degree in co-relation 247. Up to 78 conditions per place. [2025-03-04 10:00:03,844 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2025-03-04 10:00:03,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2025-03-04 10:00:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:00:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:00:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-03-04 10:00:03,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2025-03-04 10:00:03,853 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2025-03-04 10:00:03,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2025-03-04 10:00:03,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:00:03,858 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2025-03-04 10:00:03,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2025-03-04 10:00:03,864 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2025-03-04 10:00:03,865 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2025-03-04 10:00:03,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 10:00:03,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:03,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:03,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:00:03,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:03,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1145129867, now seen corresponding path program 1 times [2025-03-04 10:00:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537678257] [2025-03-04 10:00:03,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:00:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:03,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 10:00:03,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:00:03,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:00:03,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 10:00:03,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:03,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537678257] [2025-03-04 10:00:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537678257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:03,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:03,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:00:03,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335334076] [2025-03-04 10:00:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:03,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:00:03,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:03,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:00:03,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:00:03,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 10:00:03,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 10:00:03,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:03,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 10:00:03,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:04,040 INFO L124 PetriNetUnfolderBase]: 91/209 cut-off events. [2025-03-04 10:00:04,040 INFO L125 PetriNetUnfolderBase]: For 35/36 co-relation queries the response was YES. [2025-03-04 10:00:04,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 209 events. 91/209 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 737 event pairs, 46 based on Foata normal form. 9/217 useless extension candidates. Maximal degree in co-relation 123. Up to 114 conditions per place. [2025-03-04 10:00:04,042 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 25 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2025-03-04 10:00:04,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 138 flow [2025-03-04 10:00:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:00:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:00:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-03-04 10:00:04,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2025-03-04 10:00:04,043 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 50 transitions. [2025-03-04 10:00:04,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 138 flow [2025-03-04 10:00:04,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:00:04,045 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2025-03-04 10:00:04,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2025-03-04 10:00:04,045 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2025-03-04 10:00:04,046 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2025-03-04 10:00:04,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 10:00:04,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:04,046 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 10:00:04,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:00:04,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:04,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1948242367, now seen corresponding path program 1 times [2025-03-04 10:00:04,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:04,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695001971] [2025-03-04 10:00:04,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:00:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:04,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:00:04,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:00:04,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:00:04,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:04,151 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 10:00:04,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695001971] [2025-03-04 10:00:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695001971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:04,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:00:04,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435421542] [2025-03-04 10:00:04,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:04,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:00:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:04,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:00:04,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:00:04,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 10:00:04,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 10:00:04,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:04,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 10:00:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:04,217 INFO L124 PetriNetUnfolderBase]: 59/154 cut-off events. [2025-03-04 10:00:04,217 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-03-04 10:00:04,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 154 events. 59/154 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 459 event pairs, 20 based on Foata normal form. 16/169 useless extension candidates. Maximal degree in co-relation 117. Up to 72 conditions per place. [2025-03-04 10:00:04,220 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-03-04 10:00:04,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 146 flow [2025-03-04 10:00:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:00:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:00:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-03-04 10:00:04,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-03-04 10:00:04,222 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 47 transitions. [2025-03-04 10:00:04,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 146 flow [2025-03-04 10:00:04,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:00:04,224 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2025-03-04 10:00:04,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2025-03-04 10:00:04,226 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2025-03-04 10:00:04,226 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2025-03-04 10:00:04,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 10:00:04,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:04,226 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 10:00:04,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:00:04,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:04,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1333242225, now seen corresponding path program 2 times [2025-03-04 10:00:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:04,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892546234] [2025-03-04 10:00:04,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:00:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:04,243 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:00:04,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:00:04,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:00:04,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:04,328 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 10:00:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:04,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892546234] [2025-03-04 10:00:04,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892546234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:04,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:00:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873776588] [2025-03-04 10:00:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:04,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:00:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:04,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:00:04,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:00:04,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 10:00:04,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 10:00:04,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:04,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 10:00:04,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:04,414 INFO L124 PetriNetUnfolderBase]: 79/217 cut-off events. [2025-03-04 10:00:04,415 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-03-04 10:00:04,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 217 events. 79/217 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 721 event pairs, 18 based on Foata normal form. 9/226 useless extension candidates. Maximal degree in co-relation 180. Up to 90 conditions per place. [2025-03-04 10:00:04,418 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 34 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2025-03-04 10:00:04,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 214 flow [2025-03-04 10:00:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:00:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:00:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-03-04 10:00:04,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2025-03-04 10:00:04,421 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 4 states and 67 transitions. [2025-03-04 10:00:04,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 214 flow [2025-03-04 10:00:04,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:00:04,423 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 84 flow [2025-03-04 10:00:04,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2025-03-04 10:00:04,423 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2025-03-04 10:00:04,423 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 84 flow [2025-03-04 10:00:04,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 10:00:04,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:04,424 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:04,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:00:04,424 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:04,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1283294491, now seen corresponding path program 3 times [2025-03-04 10:00:04,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:04,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635047663] [2025-03-04 10:00:04,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:00:04,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:04,437 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-03-04 10:00:04,445 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 26 statements. [2025-03-04 10:00:04,446 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:00:04,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 10:00:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635047663] [2025-03-04 10:00:04,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635047663] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:00:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021365231] [2025-03-04 10:00:04,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:00:04,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:04,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:00:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 10:00:04,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-03-04 10:00:04,559 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 26 statements. [2025-03-04 10:00:04,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:00:04,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:04,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 10:00:04,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:00:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 10:00:04,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:00:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 10:00:04,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021365231] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:00:04,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:00:04,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-04 10:00:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686724455] [2025-03-04 10:00:04,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:00:04,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 10:00:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:04,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 10:00:04,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 10:00:04,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-03-04 10:00:04,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 10:00:04,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:04,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-03-04 10:00:04,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:04,772 INFO L124 PetriNetUnfolderBase]: 227/523 cut-off events. [2025-03-04 10:00:04,773 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2025-03-04 10:00:04,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 523 events. 227/523 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1973 event pairs, 35 based on Foata normal form. 42/565 useless extension candidates. Maximal degree in co-relation 428. Up to 118 conditions per place. [2025-03-04 10:00:04,777 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 62 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2025-03-04 10:00:04,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 71 transitions, 420 flow [2025-03-04 10:00:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:00:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:00:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2025-03-04 10:00:04,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2025-03-04 10:00:04,780 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 84 flow. Second operand 6 states and 97 transitions. [2025-03-04 10:00:04,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 71 transitions, 420 flow [2025-03-04 10:00:04,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 71 transitions, 390 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-04 10:00:04,782 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 118 flow [2025-03-04 10:00:04,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2025-03-04 10:00:04,783 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2025-03-04 10:00:04,783 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 118 flow [2025-03-04 10:00:04,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 10:00:04,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:04,783 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:04,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 10:00:04,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:04,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:04,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash -893965580, now seen corresponding path program 4 times [2025-03-04 10:00:04,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:04,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474954595] [2025-03-04 10:00:04,984 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:00:04,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:04,997 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-03-04 10:00:05,010 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 10:00:05,011 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:00:05,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-04 10:00:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474954595] [2025-03-04 10:00:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474954595] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:00:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906128918] [2025-03-04 10:00:05,090 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:00:05,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:05,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:00:05,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 10:00:05,148 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-03-04 10:00:05,176 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 10:00:05,176 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:00:05,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:05,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 10:00:05,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:00:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 10:00:05,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:00:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 10:00:05,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906128918] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:00:05,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:00:05,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-04 10:00:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457276709] [2025-03-04 10:00:05,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:00:05,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 10:00:05,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:05,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 10:00:05,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2025-03-04 10:00:05,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-03-04 10:00:05,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 118 flow. Second operand has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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 10:00:05,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:05,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-03-04 10:00:05,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:06,093 INFO L124 PetriNetUnfolderBase]: 635/1471 cut-off events. [2025-03-04 10:00:06,094 INFO L125 PetriNetUnfolderBase]: For 2116/2116 co-relation queries the response was YES. [2025-03-04 10:00:06,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4649 conditions, 1471 events. 635/1471 cut-off events. For 2116/2116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6520 event pairs, 10 based on Foata normal form. 161/1632 useless extension candidates. Maximal degree in co-relation 1299. Up to 265 conditions per place. [2025-03-04 10:00:06,136 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 323 selfloop transitions, 92 changer transitions 0/418 dead transitions. [2025-03-04 10:00:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 418 transitions, 2488 flow [2025-03-04 10:00:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-04 10:00:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-04 10:00:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 720 transitions. [2025-03-04 10:00:06,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-04 10:00:06,143 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 118 flow. Second operand 45 states and 720 transitions. [2025-03-04 10:00:06,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 418 transitions, 2488 flow [2025-03-04 10:00:06,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 418 transitions, 2408 flow, removed 36 selfloop flow, removed 1 redundant places. [2025-03-04 10:00:06,152 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 994 flow [2025-03-04 10:00:06,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=994, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2025-03-04 10:00:06,153 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 85 predicate places. [2025-03-04 10:00:06,153 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 994 flow [2025-03-04 10:00:06,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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 10:00:06,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:06,153 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:06,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 10:00:06,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-04 10:00:06,358 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:06,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash 421269142, now seen corresponding path program 5 times [2025-03-04 10:00:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23713271] [2025-03-04 10:00:06,359 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:00:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:06,373 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 11 equivalence classes. [2025-03-04 10:00:06,395 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 10:00:06,395 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 10:00:06,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-03-04 10:00:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23713271] [2025-03-04 10:00:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23713271] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:00:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752891841] [2025-03-04 10:00:06,496 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:00:06,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:06,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:00:06,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 10:00:06,555 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 11 equivalence classes. [2025-03-04 10:00:06,599 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 10:00:06,599 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 10:00:06,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:06,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 10:00:06,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:00:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-04 10:00:06,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:00:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-04 10:00:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752891841] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:00:07,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:00:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 26 [2025-03-04 10:00:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944437599] [2025-03-04 10:00:07,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:00:07,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 10:00:07,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:07,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 10:00:07,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=405, Unknown=0, NotChecked=0, Total=650 [2025-03-04 10:00:07,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-03-04 10:00:07,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 994 flow. Second operand has 26 states, 26 states have (on average 11.26923076923077) internal successors, (293), 26 states have internal predecessors, (293), 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 10:00:07,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:07,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-03-04 10:00:07,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:09,447 INFO L124 PetriNetUnfolderBase]: 1467/3388 cut-off events. [2025-03-04 10:00:09,448 INFO L125 PetriNetUnfolderBase]: For 123316/123316 co-relation queries the response was YES. [2025-03-04 10:00:09,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16962 conditions, 3388 events. 1467/3388 cut-off events. For 123316/123316 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 16518 event pairs, 10 based on Foata normal form. 323/3711 useless extension candidates. Maximal degree in co-relation 14780. Up to 618 conditions per place. [2025-03-04 10:00:09,476 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 767 selfloop transitions, 255 changer transitions 0/1025 dead transitions. [2025-03-04 10:00:09,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1025 transitions, 8916 flow [2025-03-04 10:00:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-03-04 10:00:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-03-04 10:00:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1689 transitions. [2025-03-04 10:00:09,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5494469746258946 [2025-03-04 10:00:09,482 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 994 flow. Second operand 106 states and 1689 transitions. [2025-03-04 10:00:09,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1025 transitions, 8916 flow [2025-03-04 10:00:09,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1025 transitions, 8638 flow, removed 62 selfloop flow, removed 5 redundant places. [2025-03-04 10:00:09,560 INFO L231 Difference]: Finished difference. Result has 277 places, 278 transitions, 3730 flow [2025-03-04 10:00:09,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=3730, PETRI_PLACES=277, PETRI_TRANSITIONS=278} [2025-03-04 10:00:09,561 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 250 predicate places. [2025-03-04 10:00:09,561 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 278 transitions, 3730 flow [2025-03-04 10:00:09,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.26923076923077) internal successors, (293), 26 states have internal predecessors, (293), 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 10:00:09,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:09,562 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:09,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 10:00:09,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:09,763 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:09,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1483702870, now seen corresponding path program 6 times [2025-03-04 10:00:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249780355] [2025-03-04 10:00:09,764 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:00:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:09,783 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 131 statements into 21 equivalence classes. [2025-03-04 10:00:09,799 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 71 of 131 statements. [2025-03-04 10:00:09,799 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-04 10:00:09,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-03-04 10:00:09,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:09,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249780355] [2025-03-04 10:00:09,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249780355] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:00:09,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891125928] [2025-03-04 10:00:09,881 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:00:09,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:09,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:09,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:00:09,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 10:00:09,951 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 131 statements into 21 equivalence classes. [2025-03-04 10:00:09,994 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 71 of 131 statements. [2025-03-04 10:00:09,994 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-04 10:00:09,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:09,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 10:00:09,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:00:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-03-04 10:00:10,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:00:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-03-04 10:00:10,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891125928] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:00:10,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:00:10,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-04 10:00:10,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878736998] [2025-03-04 10:00:10,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:00:10,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 10:00:10,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:10,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 10:00:10,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-04 10:00:10,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-03-04 10:00:10,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 278 transitions, 3730 flow. Second operand has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 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 10:00:10,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:10,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-03-04 10:00:10,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:11,576 INFO L124 PetriNetUnfolderBase]: 2885/6840 cut-off events. [2025-03-04 10:00:11,576 INFO L125 PetriNetUnfolderBase]: For 513685/513969 co-relation queries the response was YES. [2025-03-04 10:00:11,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49126 conditions, 6840 events. 2885/6840 cut-off events. For 513685/513969 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 41338 event pairs, 392 based on Foata normal form. 606/7269 useless extension candidates. Maximal degree in co-relation 46062. Up to 1113 conditions per place. [2025-03-04 10:00:11,642 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 310 selfloop transitions, 152 changer transitions 0/476 dead transitions. [2025-03-04 10:00:11,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 476 transitions, 6736 flow [2025-03-04 10:00:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 10:00:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 10:00:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2025-03-04 10:00:11,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-04 10:00:11,645 INFO L175 Difference]: Start difference. First operand has 277 places, 278 transitions, 3730 flow. Second operand 12 states and 203 transitions. [2025-03-04 10:00:11,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 476 transitions, 6736 flow [2025-03-04 10:00:12,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 476 transitions, 5944 flow, removed 261 selfloop flow, removed 36 redundant places. [2025-03-04 10:00:12,130 INFO L231 Difference]: Finished difference. Result has 259 places, 284 transitions, 3782 flow [2025-03-04 10:00:12,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3782, PETRI_PLACES=259, PETRI_TRANSITIONS=284} [2025-03-04 10:00:12,131 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 232 predicate places. [2025-03-04 10:00:12,131 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 284 transitions, 3782 flow [2025-03-04 10:00:12,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 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 10:00:12,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:12,131 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:12,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 10:00:12,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:12,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:12,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash -137420602, now seen corresponding path program 7 times [2025-03-04 10:00:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109488427] [2025-03-04 10:00:12,337 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:00:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:12,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-04 10:00:12,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 10:00:12,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:00:12,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-04 10:00:12,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:12,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109488427] [2025-03-04 10:00:12,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109488427] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:00:12,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925095922] [2025-03-04 10:00:12,950 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:00:12,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:12,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:12,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:00:12,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 10:00:13,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-04 10:00:13,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 10:00:13,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:00:13,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:13,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 10:00:13,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:00:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-04 10:00:13,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:00:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-04 10:00:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925095922] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:00:13,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:00:13,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2025-03-04 10:00:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832894721] [2025-03-04 10:00:13,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:00:13,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 10:00:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:13,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 10:00:13,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-03-04 10:00:13,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-03-04 10:00:13,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 284 transitions, 3782 flow. Second operand has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 23 states have internal predecessors, (285), 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 10:00:13,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:13,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-03-04 10:00:13,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:16,524 INFO L124 PetriNetUnfolderBase]: 5534/12959 cut-off events. [2025-03-04 10:00:16,524 INFO L125 PetriNetUnfolderBase]: For 1296534/1297086 co-relation queries the response was YES. [2025-03-04 10:00:16,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107840 conditions, 12959 events. 5534/12959 cut-off events. For 1296534/1297086 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 85871 event pairs, 562 based on Foata normal form. 1022/13624 useless extension candidates. Maximal degree in co-relation 100652. Up to 2163 conditions per place. [2025-03-04 10:00:16,704 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 590 selfloop transitions, 162 changer transitions 0/766 dead transitions. [2025-03-04 10:00:16,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 766 transitions, 10306 flow [2025-03-04 10:00:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 10:00:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 10:00:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 377 transitions. [2025-03-04 10:00:16,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-03-04 10:00:16,706 INFO L175 Difference]: Start difference. First operand has 259 places, 284 transitions, 3782 flow. Second operand 22 states and 377 transitions. [2025-03-04 10:00:16,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 766 transitions, 10306 flow [2025-03-04 10:00:17,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 766 transitions, 9556 flow, removed 256 selfloop flow, removed 4 redundant places. [2025-03-04 10:00:17,556 INFO L231 Difference]: Finished difference. Result has 287 places, 295 transitions, 4178 flow [2025-03-04 10:00:17,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4178, PETRI_PLACES=287, PETRI_TRANSITIONS=295} [2025-03-04 10:00:17,558 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 260 predicate places. [2025-03-04 10:00:17,558 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 295 transitions, 4178 flow [2025-03-04 10:00:17,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 23 states have internal predecessors, (285), 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 10:00:17,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:17,559 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:17,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 10:00:17,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:17,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:17,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash 837088518, now seen corresponding path program 8 times [2025-03-04 10:00:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196499899] [2025-03-04 10:00:17,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:00:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:17,792 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 211 statements into 2 equivalence classes. [2025-03-04 10:00:17,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-03-04 10:00:17,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:00:17,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:00:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196499899] [2025-03-04 10:00:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196499899] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:00:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85203484] [2025-03-04 10:00:20,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:00:20,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:20,487 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:00:20,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 10:00:20,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 211 statements into 2 equivalence classes. [2025-03-04 10:00:20,678 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-03-04 10:00:20,678 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:00:20,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:20,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2025-03-04 10:00:20,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:00:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:00:20,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:00:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:00:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85203484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:00:21,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:00:21,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-03-04 10:00:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171485996] [2025-03-04 10:00:21,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:00:21,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 10:00:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:21,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 10:00:21,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 10:00:21,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-03-04 10:00:21,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 295 transitions, 4178 flow. Second operand has 45 states, 45 states have (on average 10.777777777777779) internal successors, (485), 45 states have internal predecessors, (485), 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 10:00:21,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:21,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-03-04 10:00:21,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:31,768 INFO L124 PetriNetUnfolderBase]: 9003/23257 cut-off events. [2025-03-04 10:00:31,768 INFO L125 PetriNetUnfolderBase]: For 3667230/3667230 co-relation queries the response was YES. [2025-03-04 10:00:32,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252106 conditions, 23257 events. 9003/23257 cut-off events. For 3667230/3667230 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 184033 event pairs, 943 based on Foata normal form. 1/23257 useless extension candidates. Maximal degree in co-relation 241912. Up to 5263 conditions per place. [2025-03-04 10:00:32,150 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 1960 selfloop transitions, 83 changer transitions 2/2062 dead transitions. [2025-03-04 10:00:32,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 2062 transitions, 44121 flow [2025-03-04 10:00:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-04 10:00:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-03-04 10:00:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 754 transitions. [2025-03-04 10:00:32,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-03-04 10:00:32,153 INFO L175 Difference]: Start difference. First operand has 287 places, 295 transitions, 4178 flow. Second operand 44 states and 754 transitions. [2025-03-04 10:00:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 2062 transitions, 44121 flow [2025-03-04 10:00:42,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 2062 transitions, 43018 flow, removed 0 selfloop flow, removed 9 redundant places. [2025-03-04 10:00:42,748 INFO L231 Difference]: Finished difference. Result has 323 places, 377 transitions, 4252 flow [2025-03-04 10:00:42,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4252, PETRI_PLACES=323, PETRI_TRANSITIONS=377} [2025-03-04 10:00:42,749 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 296 predicate places. [2025-03-04 10:00:42,749 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 377 transitions, 4252 flow [2025-03-04 10:00:42,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.777777777777779) internal successors, (485), 45 states have internal predecessors, (485), 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 10:00:42,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:42,750 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:42,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 10:00:42,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:00:42,950 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:42,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1465549051, now seen corresponding path program 9 times [2025-03-04 10:00:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:42,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346420878] [2025-03-04 10:00:42,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:00:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:42,972 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 216 statements into 20 equivalence classes. [2025-03-04 10:00:43,066 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) and asserted 216 of 216 statements. [2025-03-04 10:00:43,066 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2025-03-04 10:00:43,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2025-03-04 10:00:43,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346420878] [2025-03-04 10:00:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346420878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:43,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:43,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-03-04 10:00:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033347349] [2025-03-04 10:00:43,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:43,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 10:00:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:43,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 10:00:43,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2025-03-04 10:00:43,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-03-04 10:00:43,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 377 transitions, 4252 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 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 10:00:43,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:43,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-03-04 10:00:43,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:49,337 INFO L124 PetriNetUnfolderBase]: 9149/21017 cut-off events. [2025-03-04 10:00:49,337 INFO L125 PetriNetUnfolderBase]: For 2509499/2509499 co-relation queries the response was YES. [2025-03-04 10:00:49,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206659 conditions, 21017 events. 9149/21017 cut-off events. For 2509499/2509499 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 157501 event pairs, 74 based on Foata normal form. 89/21105 useless extension candidates. Maximal degree in co-relation 206526. Up to 5070 conditions per place. [2025-03-04 10:00:49,725 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 2028 selfloop transitions, 105 changer transitions 0/2138 dead transitions. [2025-03-04 10:00:49,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 2138 transitions, 31666 flow [2025-03-04 10:00:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-04 10:00:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-04 10:00:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2025-03-04 10:00:49,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5667166416791605 [2025-03-04 10:00:49,726 INFO L175 Difference]: Start difference. First operand has 323 places, 377 transitions, 4252 flow. Second operand 23 states and 378 transitions. [2025-03-04 10:00:49,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 2138 transitions, 31666 flow [2025-03-04 10:00:53,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 2138 transitions, 31664 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 10:00:53,397 INFO L231 Difference]: Finished difference. Result has 343 places, 372 transitions, 4390 flow [2025-03-04 10:00:53,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4180, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4390, PETRI_PLACES=343, PETRI_TRANSITIONS=372} [2025-03-04 10:00:53,398 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 316 predicate places. [2025-03-04 10:00:53,398 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 372 transitions, 4390 flow [2025-03-04 10:00:53,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 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 10:00:53,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:53,399 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:53,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 10:00:53,399 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:53,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1968934488, now seen corresponding path program 10 times [2025-03-04 10:00:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228011667] [2025-03-04 10:00:53,401 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:00:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:53,422 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 216 statements into 2 equivalence classes. [2025-03-04 10:00:53,451 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 216 of 216 statements. [2025-03-04 10:00:53,452 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:00:53,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-03-04 10:00:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228011667] [2025-03-04 10:00:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228011667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:53,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:53,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-03-04 10:00:53,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940812981] [2025-03-04 10:00:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:53,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 10:00:53,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:53,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 10:00:53,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-03-04 10:00:53,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-03-04 10:00:53,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 372 transitions, 4390 flow. Second operand has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 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 10:00:53,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:53,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-03-04 10:00:53,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:57,617 INFO L124 PetriNetUnfolderBase]: 5398/12776 cut-off events. [2025-03-04 10:00:57,617 INFO L125 PetriNetUnfolderBase]: For 508552/509044 co-relation queries the response was YES. [2025-03-04 10:00:57,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89804 conditions, 12776 events. 5398/12776 cut-off events. For 508552/509044 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 86268 event pairs, 457 based on Foata normal form. 84/12505 useless extension candidates. Maximal degree in co-relation 89146. Up to 2163 conditions per place. [2025-03-04 10:00:57,864 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1618/1618 dead transitions. [2025-03-04 10:00:57,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1618 transitions, 15951 flow [2025-03-04 10:00:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-04 10:00:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-04 10:00:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 377 transitions. [2025-03-04 10:00:57,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2025-03-04 10:00:57,867 INFO L175 Difference]: Start difference. First operand has 343 places, 372 transitions, 4390 flow. Second operand 23 states and 377 transitions. [2025-03-04 10:00:57,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1618 transitions, 15951 flow [2025-03-04 10:00:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1618 transitions, 15013 flow, removed 0 selfloop flow, removed 24 redundant places. [2025-03-04 10:00:59,147 INFO L231 Difference]: Finished difference. Result has 337 places, 0 transitions, 0 flow [2025-03-04 10:00:59,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=337, PETRI_TRANSITIONS=0} [2025-03-04 10:00:59,149 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 310 predicate places. [2025-03-04 10:00:59,149 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 0 transitions, 0 flow [2025-03-04 10:00:59,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 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 10:00:59,152 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2025-03-04 10:00:59,152 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2025-03-04 10:00:59,152 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-04 10:00:59,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 10:00:59,153 INFO L422 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2025-03-04 10:00:59,155 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:00:59,156 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:00:59,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:00:59 BasicIcfg [2025-03-04 10:00:59,163 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:00:59,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:00:59,164 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:00:59,164 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:00:59,164 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:00:03" (3/4) ... [2025-03-04 10:00:59,166 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:00:59,169 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2025-03-04 10:00:59,174 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2025-03-04 10:00:59,175 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-03-04 10:00:59,175 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 10:00:59,175 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 10:00:59,238 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:00:59,239 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:00:59,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:00:59,239 INFO L158 Benchmark]: Toolchain (without parser) took 56894.71ms. Allocated memory was 142.6MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 102.5MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2025-03-04 10:00:59,240 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:59,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.12ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 65.4MB in the end (delta: 37.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-04 10:00:59,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.32ms. Allocated memory is still 142.6MB. Free memory was 65.4MB in the beginning and 63.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:59,242 INFO L158 Benchmark]: Boogie Preprocessor took 29.84ms. Allocated memory is still 142.6MB. Free memory was 63.2MB in the beginning and 61.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:59,242 INFO L158 Benchmark]: IcfgBuilder took 375.56ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 40.3MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 10:00:59,242 INFO L158 Benchmark]: TraceAbstraction took 55790.87ms. Allocated memory was 142.6MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 39.2MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2025-03-04 10:00:59,243 INFO L158 Benchmark]: Witness Printer took 75.37ms. Allocated memory is still 4.7GB. Free memory was 2.0GB in the beginning and 1.9GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:00:59,244 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.12ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 65.4MB in the end (delta: 37.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.32ms. Allocated memory is still 142.6MB. Free memory was 65.4MB in the beginning and 63.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.84ms. Allocated memory is still 142.6MB. Free memory was 63.2MB in the beginning and 61.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 375.56ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 40.3MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 55790.87ms. Allocated memory was 142.6MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 39.2MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Witness Printer took 75.37ms. Allocated memory is still 4.7GB. Free memory was 2.0GB in the beginning and 1.9GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: 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, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 55.7s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 46.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2907 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2891 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21311 IncrementalHoareTripleChecker+Invalid, 21365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 6 mSDtfsCounter, 21311 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1618 GetRequests, 1338 SyntacticMatches, 5 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3909 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4390occurred in iteration=11, InterpolantAutomatonStates: 294, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1793 NumberOfCodeBlocks, 1663 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 2415 ConstructedInterpolants, 0 QuantifiedInterpolants, 5646 SizeOfPredicates, 22 NumberOfNonLiveVariables, 2517 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 8568/15741 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 10:00:59,260 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