./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/fib_unsafe-11.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 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:03:57,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:03:57,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:03:57,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:03:57,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:03:57,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:03:57,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:03:57,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:03:57,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:03:57,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:03:57,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:03:57,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:03:57,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:03:57,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:03:57,337 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:03:57,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:03:57,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:03:57,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:03:57,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:03:57,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:03:57,339 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:03:57,339 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:03:57,339 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:03:57,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:03:57,340 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:03:57,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:03:57,340 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:03:57,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:03:57,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:03:57,341 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:03:57,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:03:57,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:03:57,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:03:57,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:03:57,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:03:57,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:03:57,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:03:57,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:03:57,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:03:57,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:03:57,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:03:57,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:03:57,343 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 [2024-11-17 03:03:57,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:03:57,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:03:57,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:03:57,547 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:03:57,547 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:03:57,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-11.i [2024-11-17 03:03:58,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:03:59,039 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:03:59,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-11.i [2024-11-17 03:03:59,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f593daebe/48220d49ff0347ac9cb03774b523759c/FLAG2e1e9c1e7 [2024-11-17 03:03:59,396 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f593daebe/48220d49ff0347ac9cb03774b523759c [2024-11-17 03:03:59,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:03:59,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:03:59,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:03:59,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:03:59,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:03:59,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d189e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59, skipping insertion in model container [2024-11-17 03:03:59,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:03:59,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:03:59,754 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:03:59,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:03:59,815 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:03:59,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59 WrapperNode [2024-11-17 03:03:59,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:03:59,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:03:59,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:03:59,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:03:59,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,846 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-17 03:03:59,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:03:59,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:03:59,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:03:59,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:03:59,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,871 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 03:03:59,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:03:59,885 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:03:59,886 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:03:59,886 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:03:59,886 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (1/1) ... [2024-11-17 03:03:59,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:03:59,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:03:59,915 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) [2024-11-17 03:03:59,918 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 [2024-11-17 03:03:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 03:03:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 03:03:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 03:03:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 03:03:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:03:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:03:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:03:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:03:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:03:59,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:03:59,956 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:04:00,056 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:04:00,058 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:04:00,177 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:04:00,177 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:04:00,254 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:04:00,254 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:04:00,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:04:00 BoogieIcfgContainer [2024-11-17 03:04:00,255 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:04:00,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:04:00,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:04:00,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:04:00,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:03:59" (1/3) ... [2024-11-17 03:04:00,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786649e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:00, skipping insertion in model container [2024-11-17 03:04:00,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:59" (2/3) ... [2024-11-17 03:04:00,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786649e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:00, skipping insertion in model container [2024-11-17 03:04:00,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:04:00" (3/3) ... [2024-11-17 03:04:00,261 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2024-11-17 03:04:00,273 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:04:00,273 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:04:00,273 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:04:00,298 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:04:00,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 43 transitions, 94 flow [2024-11-17 03:04:00,347 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-11-17 03:04:00,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:04:00,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 8/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-17 03:04:00,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 43 transitions, 94 flow [2024-11-17 03:04:00,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 88 flow [2024-11-17 03:04:00,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:04:00,367 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;@597fc797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:04:00,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:04:00,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:04:00,379 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-17 03:04:00,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:04:00,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:00,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:00,380 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:00,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1705527034, now seen corresponding path program 1 times [2024-11-17 03:04:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753908355] [2024-11-17 03:04:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:00,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:00,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:00,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753908355] [2024-11-17 03:04:00,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753908355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:04:00,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:04:00,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:04:00,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115642367] [2024-11-17 03:04:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:04:00,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:04:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:00,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:04:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:04:00,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-17 03:04:00,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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) [2024-11-17 03:04:00,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:00,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-17 03:04:00,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:00,745 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-17 03:04:00,745 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:04:00,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 519 events. 265/519 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2572 event pairs, 183 based on Foata normal form. 114/597 useless extension candidates. Maximal degree in co-relation 922. Up to 406 conditions per place. [2024-11-17 03:04:00,754 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 22 selfloop transitions, 0 changer transitions 1/35 dead transitions. [2024-11-17 03:04:00,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 122 flow [2024-11-17 03:04:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:04:00,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:04:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-17 03:04:00,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-17 03:04:00,767 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 2 states and 56 transitions. [2024-11-17 03:04:00,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 122 flow [2024-11-17 03:04:00,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:04:00,772 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 72 flow [2024-11-17 03:04:00,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-17 03:04:00,777 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-17 03:04:00,778 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 72 flow [2024-11-17 03:04:00,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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) [2024-11-17 03:04:00,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:00,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:00,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:04:00,779 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:00,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash 869894088, now seen corresponding path program 1 times [2024-11-17 03:04:00,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169480072] [2024-11-17 03:04:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169480072] [2024-11-17 03:04:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169480072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:04:00,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:04:00,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:04:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373926579] [2024-11-17 03:04:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:04:00,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:04:00,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:04:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:04:00,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:00,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-17 03:04:00,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:00,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:00,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:00,997 INFO L124 PetriNetUnfolderBase]: 297/567 cut-off events. [2024-11-17 03:04:00,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:04:01,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 567 events. 297/567 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2757 event pairs, 39 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 1030. Up to 353 conditions per place. [2024-11-17 03:04:01,004 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 30 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-17 03:04:01,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 154 flow [2024-11-17 03:04:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:04:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:04:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-17 03:04:01,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-17 03:04:01,007 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-11-17 03:04:01,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 154 flow [2024-11-17 03:04:01,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:04:01,011 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-11-17 03:04:01,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-17 03:04:01,012 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-17 03:04:01,012 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-11-17 03:04:01,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-17 03:04:01,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:01,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:01,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:04:01,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:01,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash -584403430, now seen corresponding path program 1 times [2024-11-17 03:04:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:01,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877242868] [2024-11-17 03:04:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:01,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:01,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877242868] [2024-11-17 03:04:01,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877242868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:01,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385587288] [2024-11-17 03:04:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:01,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:01,095 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) [2024-11-17 03:04:01,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:04:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:01,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:04:01,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:04:01,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:04:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385587288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:04:01,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:04:01,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 03:04:01,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675180280] [2024-11-17 03:04:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:04:01,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:04:01,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:04:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:04:01,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:01,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:01,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:01,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:01,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:01,252 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-17 03:04:01,252 INFO L125 PetriNetUnfolderBase]: For 32/40 co-relation queries the response was YES. [2024-11-17 03:04:01,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 519 events. 265/519 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2529 event pairs, 183 based on Foata normal form. 16/491 useless extension candidates. Maximal degree in co-relation 987. Up to 405 conditions per place. [2024-11-17 03:04:01,255 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/34 dead transitions. [2024-11-17 03:04:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 128 flow [2024-11-17 03:04:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:04:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:04:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-17 03:04:01,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-17 03:04:01,257 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 84 flow. Second operand 3 states and 62 transitions. [2024-11-17 03:04:01,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 128 flow [2024-11-17 03:04:01,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:04:01,260 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 80 flow [2024-11-17 03:04:01,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-17 03:04:01,260 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-17 03:04:01,260 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 80 flow [2024-11-17 03:04:01,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:01,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:01,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:01,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:04:01,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:01,463 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:01,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash -584402535, now seen corresponding path program 1 times [2024-11-17 03:04:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:01,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251701388] [2024-11-17 03:04:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:01,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:01,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251701388] [2024-11-17 03:04:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251701388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392933628] [2024-11-17 03:04:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:01,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:01,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:01,507 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) [2024-11-17 03:04:01,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:04:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:01,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:04:01,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:01,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392933628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:01,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:01,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-17 03:04:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393949785] [2024-11-17 03:04:01,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:01,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:04:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:04:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:04:01,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:01,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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) [2024-11-17 03:04:01,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:01,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:01,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:01,723 INFO L124 PetriNetUnfolderBase]: 361/695 cut-off events. [2024-11-17 03:04:01,723 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-17 03:04:01,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 695 events. 361/695 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3359 event pairs, 39 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1352. Up to 305 conditions per place. [2024-11-17 03:04:01,731 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-17 03:04:01,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 272 flow [2024-11-17 03:04:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:04:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:04:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-17 03:04:01,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2024-11-17 03:04:01,736 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 80 flow. Second operand 6 states and 139 transitions. [2024-11-17 03:04:01,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 272 flow [2024-11-17 03:04:01,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:04:01,738 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 115 flow [2024-11-17 03:04:01,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-17 03:04:01,739 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-17 03:04:01,739 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 115 flow [2024-11-17 03:04:01,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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) [2024-11-17 03:04:01,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:01,739 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:01,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:04:01,939 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,SelfDestructingSolverStorable3 [2024-11-17 03:04:01,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:01,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1788020337, now seen corresponding path program 2 times [2024-11-17 03:04:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248000333] [2024-11-17 03:04:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:01,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:02,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248000333] [2024-11-17 03:04:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248000333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934392901] [2024-11-17 03:04:02,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:04:02,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:02,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:02,029 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) [2024-11-17 03:04:02,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:04:02,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:04:02,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:02,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:04:02,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:02,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934392901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:02,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:02,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-17 03:04:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252431802] [2024-11-17 03:04:02,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:02,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:04:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:04:02,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:04:02,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:02,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 115 flow. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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) [2024-11-17 03:04:02,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:02,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:02,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:02,393 INFO L124 PetriNetUnfolderBase]: 553/1079 cut-off events. [2024-11-17 03:04:02,393 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-17 03:04:02,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1079 events. 553/1079 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 39 based on Foata normal form. 96/1155 useless extension candidates. Maximal degree in co-relation 2393. Up to 305 conditions per place. [2024-11-17 03:04:02,400 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 101 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2024-11-17 03:04:02,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 535 flow [2024-11-17 03:04:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:04:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:04:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-11-17 03:04:02,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-11-17 03:04:02,405 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 115 flow. Second operand 12 states and 274 transitions. [2024-11-17 03:04:02,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 535 flow [2024-11-17 03:04:02,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 527 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:04:02,411 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 191 flow [2024-11-17 03:04:02,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2024-11-17 03:04:02,413 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-17 03:04:02,413 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 191 flow [2024-11-17 03:04:02,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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) [2024-11-17 03:04:02,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:02,414 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:02,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:04:02,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:02,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:02,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -406525957, now seen corresponding path program 3 times [2024-11-17 03:04:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286012047] [2024-11-17 03:04:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:02,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286012047] [2024-11-17 03:04:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286012047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289570893] [2024-11-17 03:04:02,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:04:02,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:02,778 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) [2024-11-17 03:04:02,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:04:02,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-17 03:04:02,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:02,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:04:02,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:02,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289570893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:03,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:03,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-17 03:04:03,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312625245] [2024-11-17 03:04:03,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:03,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:04:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:03,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:04:03,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:04:03,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:03,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 191 flow. Second operand has 25 states, 25 states have (on average 14.48) internal successors, (362), 25 states have internal predecessors, (362), 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) [2024-11-17 03:04:03,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:03,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:03,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:03,494 INFO L124 PetriNetUnfolderBase]: 937/1847 cut-off events. [2024-11-17 03:04:03,494 INFO L125 PetriNetUnfolderBase]: For 13968/13968 co-relation queries the response was YES. [2024-11-17 03:04:03,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 1847 events. 937/1847 cut-off events. For 13968/13968 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9298 event pairs, 39 based on Foata normal form. 192/2019 useless extension candidates. Maximal degree in co-relation 4633. Up to 384 conditions per place. [2024-11-17 03:04:03,507 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 197 selfloop transitions, 23 changer transitions 0/230 dead transitions. [2024-11-17 03:04:03,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 230 transitions, 1079 flow [2024-11-17 03:04:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:04:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:04:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 544 transitions. [2024-11-17 03:04:03,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-11-17 03:04:03,513 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 191 flow. Second operand 24 states and 544 transitions. [2024-11-17 03:04:03,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 230 transitions, 1079 flow [2024-11-17 03:04:03,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 230 transitions, 1019 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-17 03:04:03,525 INFO L231 Difference]: Finished difference. Result has 92 places, 54 transitions, 323 flow [2024-11-17 03:04:03,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=323, PETRI_PLACES=92, PETRI_TRANSITIONS=54} [2024-11-17 03:04:03,526 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-11-17 03:04:03,526 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 54 transitions, 323 flow [2024-11-17 03:04:03,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 25 states have internal predecessors, (362), 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) [2024-11-17 03:04:03,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:03,527 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:03,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:04:03,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:03,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:03,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 138215123, now seen corresponding path program 4 times [2024-11-17 03:04:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:03,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220799881] [2024-11-17 03:04:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:04,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:04,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220799881] [2024-11-17 03:04:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220799881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99551008] [2024-11-17 03:04:04,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:04:04,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:04,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:04,167 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) [2024-11-17 03:04:04,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:04:04,242 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:04:04,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:04,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 03:04:04,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:04,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99551008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:04,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2024-11-17 03:04:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042349191] [2024-11-17 03:04:04,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:04,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-17 03:04:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-17 03:04:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-17 03:04:04,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:04,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 54 transitions, 323 flow. Second operand has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 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) [2024-11-17 03:04:04,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:04,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:04,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:05,016 INFO L124 PetriNetUnfolderBase]: 1001/1975 cut-off events. [2024-11-17 03:04:05,017 INFO L125 PetriNetUnfolderBase]: For 15248/15248 co-relation queries the response was YES. [2024-11-17 03:04:05,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1975 events. 1001/1975 cut-off events. For 15248/15248 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9865 event pairs, 39 based on Foata normal form. 32/1987 useless extension candidates. Maximal degree in co-relation 5241. Up to 416 conditions per place. [2024-11-17 03:04:05,028 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 213 selfloop transitions, 25 changer transitions 0/248 dead transitions. [2024-11-17 03:04:05,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 248 transitions, 1199 flow [2024-11-17 03:04:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 03:04:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-17 03:04:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 578 transitions. [2024-11-17 03:04:05,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.516994633273703 [2024-11-17 03:04:05,030 INFO L175 Difference]: Start difference. First operand has 92 places, 54 transitions, 323 flow. Second operand 26 states and 578 transitions. [2024-11-17 03:04:05,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 248 transitions, 1199 flow [2024-11-17 03:04:05,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 248 transitions, 1123 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-11-17 03:04:05,043 INFO L231 Difference]: Finished difference. Result has 108 places, 56 transitions, 323 flow [2024-11-17 03:04:05,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=323, PETRI_PLACES=108, PETRI_TRANSITIONS=56} [2024-11-17 03:04:05,043 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2024-11-17 03:04:05,044 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 56 transitions, 323 flow [2024-11-17 03:04:05,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 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) [2024-11-17 03:04:05,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:05,044 INFO L204 CegarLoopForPetriNet]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:05,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:04:05,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:05,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:05,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1106220809, now seen corresponding path program 5 times [2024-11-17 03:04:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360296805] [2024-11-17 03:04:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:06,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360296805] [2024-11-17 03:04:06,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360296805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615556595] [2024-11-17 03:04:06,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:04:06,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:06,788 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) [2024-11-17 03:04:06,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:04:06,868 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-17 03:04:06,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:06,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-17 03:04:06,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 506 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:08,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615556595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:09,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:09,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 89 [2024-11-17 03:04:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253121652] [2024-11-17 03:04:09,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:09,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-17 03:04:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-17 03:04:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1193, Invalid=6817, Unknown=0, NotChecked=0, Total=8010 [2024-11-17 03:04:09,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:09,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 56 transitions, 323 flow. Second operand has 90 states, 90 states have (on average 14.188888888888888) internal successors, (1277), 90 states have internal predecessors, (1277), 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) [2024-11-17 03:04:09,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:09,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:09,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:51,757 INFO L124 PetriNetUnfolderBase]: 36643/73048 cut-off events. [2024-11-17 03:04:51,757 INFO L125 PetriNetUnfolderBase]: For 107608/108086 co-relation queries the response was YES. [2024-11-17 03:04:52,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172966 conditions, 73048 events. 36643/73048 cut-off events. For 107608/108086 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 678547 event pairs, 481 based on Foata normal form. 0/67241 useless extension candidates. Maximal degree in co-relation 172937. Up to 14292 conditions per place. [2024-11-17 03:04:52,281 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 943 selfloop transitions, 1465 changer transitions 1141/3559 dead transitions. [2024-11-17 03:04:52,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 3559 transitions, 22440 flow [2024-11-17 03:04:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 285 states. [2024-11-17 03:04:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2024-11-17 03:04:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 6099 transitions. [2024-11-17 03:04:52,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-11-17 03:04:52,298 INFO L175 Difference]: Start difference. First operand has 108 places, 56 transitions, 323 flow. Second operand 285 states and 6099 transitions. [2024-11-17 03:04:52,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 3559 transitions, 22440 flow [2024-11-17 03:04:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 3559 transitions, 19562 flow, removed 270 selfloop flow, removed 23 redundant places. [2024-11-17 03:04:52,569 INFO L231 Difference]: Finished difference. Result has 479 places, 1613 transitions, 12051 flow [2024-11-17 03:04:52,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=285, PETRI_FLOW=12051, PETRI_PLACES=479, PETRI_TRANSITIONS=1613} [2024-11-17 03:04:52,570 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 439 predicate places. [2024-11-17 03:04:52,570 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 1613 transitions, 12051 flow [2024-11-17 03:04:52,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 14.188888888888888) internal successors, (1277), 90 states have internal predecessors, (1277), 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) [2024-11-17 03:04:52,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:52,571 INFO L204 CegarLoopForPetriNet]: trace histogram [25, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:52,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 03:04:52,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:52,772 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:52,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1518397582, now seen corresponding path program 1 times [2024-11-17 03:04:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27201685] [2024-11-17 03:04:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:52,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:54,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27201685] [2024-11-17 03:04:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27201685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115332665] [2024-11-17 03:04:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:54,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:54,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:54,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:04:54,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:04:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:54,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-17 03:04:54,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 506 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:55,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115332665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:57,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 96 [2024-11-17 03:04:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425403260] [2024-11-17 03:04:57,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:57,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-17 03:04:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-17 03:04:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1253, Invalid=8059, Unknown=0, NotChecked=0, Total=9312 [2024-11-17 03:04:57,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:57,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1613 transitions, 12051 flow. Second operand has 97 states, 97 states have (on average 14.22680412371134) internal successors, (1380), 97 states have internal predecessors, (1380), 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) [2024-11-17 03:04:57,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:57,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand