./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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/weaver/parallel-misc-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:47:44,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:47:44,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:47:44,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:47:44,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:47:44,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:47:44,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:47:44,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:47:44,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:47:44,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:47:44,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:47:44,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:47:44,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:47:44,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:47:44,538 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:47:44,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:47:44,539 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:47:44,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:47:44,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:47:44,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:47:44,539 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:47:44,540 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:47:44,540 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:47:44,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:47:44,540 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:47:44,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:47:44,541 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:47:44,541 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:47:44,541 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:47:44,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:47:44,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:47:44,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:47:44,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:47:44,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:47:44,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:47:44,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:47:44,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:47:44,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:47:44,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:47:44,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:47:44,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:47:44,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:47:44,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-19 09:47:44,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:47:44,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:47:44,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:47:44,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:47:44,769 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:47:44,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-19 09:47:46,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:47:46,164 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:47:46,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-19 09:47:46,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5942fb4b2/997b0a1c13414295a50f9d863ae9d1d1/FLAGf28d1ee28 [2024-11-19 09:47:46,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5942fb4b2/997b0a1c13414295a50f9d863ae9d1d1 [2024-11-19 09:47:46,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:47:46,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:47:46,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:47:46,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:47:46,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:47:46,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd647e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46, skipping insertion in model container [2024-11-19 09:47:46,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:47:46,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:47:46,453 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:47:46,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:47:46,486 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:47:46,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46 WrapperNode [2024-11-19 09:47:46,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:47:46,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:47:46,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:47:46,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:47:46,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,516 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-19 09:47:46,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:47:46,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:47:46,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:47:46,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:47:46,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,547 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]. [2024-11-19 09:47:46,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:47:46,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:47:46,559 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:47:46,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:47:46,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (1/1) ... [2024-11-19 09:47:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:47:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:46,592 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) [2024-11-19 09:47:46,595 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 [2024-11-19 09:47:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:47:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:47:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:47:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:47:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:47:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:47:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:47:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:47:46,636 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:47:46,706 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:47:46,708 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:47:46,831 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:47:46,831 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:47:46,920 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:47:46,921 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:47:46,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:46 BoogieIcfgContainer [2024-11-19 09:47:46,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:47:46,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:47:46,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:47:46,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:47:46,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:47:46" (1/3) ... [2024-11-19 09:47:46,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88758a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:46, skipping insertion in model container [2024-11-19 09:47:46,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:46" (2/3) ... [2024-11-19 09:47:46,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88758a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:46, skipping insertion in model container [2024-11-19 09:47:46,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:46" (3/3) ... [2024-11-19 09:47:46,929 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-19 09:47:46,943 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:47:46,944 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:47:46,944 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:47:46,981 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:47:47,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-19 09:47:47,029 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-19 09:47:47,029 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:47:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-19 09:47:47,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-19 09:47:47,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 70 flow [2024-11-19 09:47:47,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:47:47,054 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;@43799f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:47:47,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:47:47,072 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:47:47,073 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-19 09:47:47,073 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:47:47,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:47,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:47,074 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)] === [2024-11-19 09:47:47,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash -73277144, now seen corresponding path program 1 times [2024-11-19 09:47:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:47,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700154409] [2024-11-19 09:47:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:47,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:47,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700154409] [2024-11-19 09:47:47,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700154409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:47,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:47,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:47:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767239264] [2024-11-19 09:47:47,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:47,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:47:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:47,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:47:47,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:47:47,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 09:47:47,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 70 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) [2024-11-19 09:47:47,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:47,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 09:47:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:47,495 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2024-11-19 09:47:47,495 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 09:47:47,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 284 events. 146/284 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1128 event pairs, 12 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 458. Up to 185 conditions per place. [2024-11-19 09:47:47,503 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2024-11-19 09:47:47,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 151 flow [2024-11-19 09:47:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:47:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:47:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-19 09:47:47,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-19 09:47:47,517 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 70 flow. Second operand 3 states and 71 transitions. [2024-11-19 09:47:47,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 151 flow [2024-11-19 09:47:47,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:47:47,523 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 91 flow [2024-11-19 09:47:47,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2024-11-19 09:47:47,531 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-11-19 09:47:47,531 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 91 flow [2024-11-19 09:47:47,531 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) [2024-11-19 09:47:47,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:47,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:47,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:47:47,532 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)] === [2024-11-19 09:47:47,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash -364959184, now seen corresponding path program 1 times [2024-11-19 09:47:47,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:47,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705348902] [2024-11-19 09:47:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:47,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:47,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:47,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705348902] [2024-11-19 09:47:47,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705348902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:47,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:47,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:47:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069469859] [2024-11-19 09:47:47,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:47,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:47:47,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:47,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:47:47,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:47:47,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-19 09:47:47,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-19 09:47:47,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:47,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-19 09:47:47,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:47,710 INFO L124 PetriNetUnfolderBase]: 129/272 cut-off events. [2024-11-19 09:47:47,711 INFO L125 PetriNetUnfolderBase]: For 48/60 co-relation queries the response was YES. [2024-11-19 09:47:47,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 272 events. 129/272 cut-off events. For 48/60 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1198 event pairs, 22 based on Foata normal form. 11/244 useless extension candidates. Maximal degree in co-relation 341. Up to 108 conditions per place. [2024-11-19 09:47:47,714 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 22 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-19 09:47:47,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 160 flow [2024-11-19 09:47:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:47:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:47:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-19 09:47:47,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-19 09:47:47,715 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 91 flow. Second operand 3 states and 71 transitions. [2024-11-19 09:47:47,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 160 flow [2024-11-19 09:47:47,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 153 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 09:47:47,717 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 96 flow [2024-11-19 09:47:47,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2024-11-19 09:47:47,718 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-19 09:47:47,718 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 96 flow [2024-11-19 09:47:47,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-19 09:47:47,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:47,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:47,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:47:47,719 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)] === [2024-11-19 09:47:47,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -674629076, now seen corresponding path program 1 times [2024-11-19 09:47:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:47,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850037557] [2024-11-19 09:47:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:47,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850037557] [2024-11-19 09:47:47,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850037557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:47,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:47,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:47:47,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596273899] [2024-11-19 09:47:47,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:47,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:47:47,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:47:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:47:47,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-19 09:47:47,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-19 09:47:47,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:47,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-19 09:47:47,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:47,834 INFO L124 PetriNetUnfolderBase]: 128/302 cut-off events. [2024-11-19 09:47:47,835 INFO L125 PetriNetUnfolderBase]: For 77/83 co-relation queries the response was YES. [2024-11-19 09:47:47,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 302 events. 128/302 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1482 event pairs, 22 based on Foata normal form. 9/262 useless extension candidates. Maximal degree in co-relation 330. Up to 107 conditions per place. [2024-11-19 09:47:47,838 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 23 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-11-19 09:47:47,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 174 flow [2024-11-19 09:47:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:47:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:47:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-19 09:47:47,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-19 09:47:47,839 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 96 flow. Second operand 3 states and 70 transitions. [2024-11-19 09:47:47,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 174 flow [2024-11-19 09:47:47,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:47:47,841 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 106 flow [2024-11-19 09:47:47,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2024-11-19 09:47:47,842 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-11-19 09:47:47,842 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 106 flow [2024-11-19 09:47:47,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-19 09:47:47,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:47,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:47,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:47:47,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:47,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1346235286, now seen corresponding path program 1 times [2024-11-19 09:47:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:47,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920698955] [2024-11-19 09:47:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:47,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920698955] [2024-11-19 09:47:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920698955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:48,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:48,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:47:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667312503] [2024-11-19 09:47:48,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:48,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:47:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:47:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:47:48,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 09:47:48,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-19 09:47:48,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:48,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 09:47:48,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:48,185 INFO L124 PetriNetUnfolderBase]: 218/428 cut-off events. [2024-11-19 09:47:48,188 INFO L125 PetriNetUnfolderBase]: For 135/163 co-relation queries the response was YES. [2024-11-19 09:47:48,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 428 events. 218/428 cut-off events. For 135/163 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1788 event pairs, 50 based on Foata normal form. 16/393 useless extension candidates. Maximal degree in co-relation 379. Up to 139 conditions per place. [2024-11-19 09:47:48,193 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 33 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-19 09:47:48,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 240 flow [2024-11-19 09:47:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:47:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:47:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-19 09:47:48,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-19 09:47:48,197 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 106 flow. Second operand 4 states and 91 transitions. [2024-11-19 09:47:48,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 240 flow [2024-11-19 09:47:48,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:47:48,201 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 136 flow [2024-11-19 09:47:48,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-19 09:47:48,202 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-11-19 09:47:48,203 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 136 flow [2024-11-19 09:47:48,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-19 09:47:48,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:48,204 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:48,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:47:48,205 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:48,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash -939977965, now seen corresponding path program 1 times [2024-11-19 09:47:48,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:48,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264029606] [2024-11-19 09:47:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:48,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:47:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264029606] [2024-11-19 09:47:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264029606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:48,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:47:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259709419] [2024-11-19 09:47:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:48,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:47:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:47:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:47:48,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 09:47:48,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-19 09:47:48,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:48,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 09:47:48,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:48,523 INFO L124 PetriNetUnfolderBase]: 392/744 cut-off events. [2024-11-19 09:47:48,523 INFO L125 PetriNetUnfolderBase]: For 772/806 co-relation queries the response was YES. [2024-11-19 09:47:48,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 744 events. 392/744 cut-off events. For 772/806 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4002 event pairs, 93 based on Foata normal form. 36/691 useless extension candidates. Maximal degree in co-relation 1034. Up to 228 conditions per place. [2024-11-19 09:47:48,528 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-19 09:47:48,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 330 flow [2024-11-19 09:47:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:47:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:47:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-19 09:47:48,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-19 09:47:48,530 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 136 flow. Second operand 4 states and 91 transitions. [2024-11-19 09:47:48,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 330 flow [2024-11-19 09:47:48,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 09:47:48,534 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 166 flow [2024-11-19 09:47:48,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-19 09:47:48,535 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-11-19 09:47:48,536 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 166 flow [2024-11-19 09:47:48,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-19 09:47:48,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:48,537 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:48,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:47:48,537 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:48,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:48,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1840485683, now seen corresponding path program 1 times [2024-11-19 09:47:48,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:48,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139113972] [2024-11-19 09:47:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:48,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:47:48,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:48,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139113972] [2024-11-19 09:47:48,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139113972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:48,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814881563] [2024-11-19 09:47:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:47:48,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:48,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:48,690 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) [2024-11-19 09:47:48,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:47:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:48,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:47:48,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:47:48,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:47:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814881563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:48,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-19 09:47:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209043201] [2024-11-19 09:47:48,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:48,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:47:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:47:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:47:48,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 09:47:48,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-19 09:47:48,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:48,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 09:47:48,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:49,129 INFO L124 PetriNetUnfolderBase]: 956/1991 cut-off events. [2024-11-19 09:47:49,129 INFO L125 PetriNetUnfolderBase]: For 2306/2413 co-relation queries the response was YES. [2024-11-19 09:47:49,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 1991 events. 956/1991 cut-off events. For 2306/2413 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11863 event pairs, 145 based on Foata normal form. 40/1993 useless extension candidates. Maximal degree in co-relation 1528. Up to 658 conditions per place. [2024-11-19 09:47:49,142 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 65 selfloop transitions, 15 changer transitions 1/94 dead transitions. [2024-11-19 09:47:49,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 94 transitions, 607 flow [2024-11-19 09:47:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:47:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:47:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-19 09:47:49,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-11-19 09:47:49,144 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 166 flow. Second operand 5 states and 128 transitions. [2024-11-19 09:47:49,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 94 transitions, 607 flow [2024-11-19 09:47:49,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 94 transitions, 599 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-19 09:47:49,147 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 261 flow [2024-11-19 09:47:49,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-19 09:47:49,148 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-11-19 09:47:49,148 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 261 flow [2024-11-19 09:47:49,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-19 09:47:49,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:49,149 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:49,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:47:49,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 09:47:49,350 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:49,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 899236193, now seen corresponding path program 2 times [2024-11-19 09:47:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967279779] [2024-11-19 09:47:49,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:47:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:49,373 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:49,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:49,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967279779] [2024-11-19 09:47:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967279779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163081735] [2024-11-19 09:47:49,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:47:49,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:49,518 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) [2024-11-19 09:47:49,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:47:49,570 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:49,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:49,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:47:49,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:49,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:49,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163081735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:49,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:49,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-19 09:47:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219809466] [2024-11-19 09:47:49,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:49,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:47:49,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:47:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:47:49,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 09:47:49,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-19 09:47:49,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:49,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 09:47:49,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:50,076 INFO L124 PetriNetUnfolderBase]: 1767/3692 cut-off events. [2024-11-19 09:47:50,076 INFO L125 PetriNetUnfolderBase]: For 5885/6121 co-relation queries the response was YES. [2024-11-19 09:47:50,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11654 conditions, 3692 events. 1767/3692 cut-off events. For 5885/6121 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 26093 event pairs, 177 based on Foata normal form. 94/3717 useless extension candidates. Maximal degree in co-relation 3701. Up to 1033 conditions per place. [2024-11-19 09:47:50,102 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 81 selfloop transitions, 31 changer transitions 1/126 dead transitions. [2024-11-19 09:47:50,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 895 flow [2024-11-19 09:47:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:47:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:47:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-19 09:47:50,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8125 [2024-11-19 09:47:50,103 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 261 flow. Second operand 6 states and 156 transitions. [2024-11-19 09:47:50,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 895 flow [2024-11-19 09:47:50,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 839 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-19 09:47:50,108 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 388 flow [2024-11-19 09:47:50,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2024-11-19 09:47:50,109 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-11-19 09:47:50,109 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 388 flow [2024-11-19 09:47:50,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-19 09:47:50,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:50,110 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:50,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:47:50,310 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,SelfDestructingSolverStorable6 [2024-11-19 09:47:50,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:50,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash 962951687, now seen corresponding path program 3 times [2024-11-19 09:47:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:50,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885103154] [2024-11-19 09:47:50,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:50,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:50,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 09:47:50,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885103154] [2024-11-19 09:47:50,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885103154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:50,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:50,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:47:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321391086] [2024-11-19 09:47:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:50,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:47:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:47:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:47:50,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 09:47:50,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-19 09:47:50,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:50,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 09:47:50,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:50,981 INFO L124 PetriNetUnfolderBase]: 3183/5782 cut-off events. [2024-11-19 09:47:50,982 INFO L125 PetriNetUnfolderBase]: For 10463/10747 co-relation queries the response was YES. [2024-11-19 09:47:50,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18831 conditions, 5782 events. 3183/5782 cut-off events. For 10463/10747 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 40722 event pairs, 746 based on Foata normal form. 194/5865 useless extension candidates. Maximal degree in co-relation 7266. Up to 2151 conditions per place. [2024-11-19 09:47:51,023 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2024-11-19 09:47:51,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 115 transitions, 874 flow [2024-11-19 09:47:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:47:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:47:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-19 09:47:51,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-11-19 09:47:51,025 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 388 flow. Second operand 4 states and 86 transitions. [2024-11-19 09:47:51,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 115 transitions, 874 flow [2024-11-19 09:47:51,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 115 transitions, 825 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-19 09:47:51,034 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 409 flow [2024-11-19 09:47:51,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2024-11-19 09:47:51,035 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-19 09:47:51,035 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 409 flow [2024-11-19 09:47:51,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-19 09:47:51,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:51,035 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:51,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:47:51,035 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:51,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1404958587, now seen corresponding path program 4 times [2024-11-19 09:47:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94030622] [2024-11-19 09:47:51,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:47:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:51,062 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:47:51,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 09:47:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94030622] [2024-11-19 09:47:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94030622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:51,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:47:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61841356] [2024-11-19 09:47:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:51,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:47:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:47:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:47:51,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 09:47:51,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-19 09:47:51,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:51,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 09:47:51,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:51,565 INFO L124 PetriNetUnfolderBase]: 1938/4022 cut-off events. [2024-11-19 09:47:51,565 INFO L125 PetriNetUnfolderBase]: For 10867/11070 co-relation queries the response was YES. [2024-11-19 09:47:51,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13454 conditions, 4022 events. 1938/4022 cut-off events. For 10867/11070 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 29772 event pairs, 651 based on Foata normal form. 373/4166 useless extension candidates. Maximal degree in co-relation 5768. Up to 1795 conditions per place. [2024-11-19 09:47:51,601 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 56 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-19 09:47:51,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 647 flow [2024-11-19 09:47:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:47:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:47:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-19 09:47:51,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-19 09:47:51,603 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 409 flow. Second operand 4 states and 81 transitions. [2024-11-19 09:47:51,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 647 flow [2024-11-19 09:47:51,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 639 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 09:47:51,610 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 404 flow [2024-11-19 09:47:51,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-11-19 09:47:51,611 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2024-11-19 09:47:51,611 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 404 flow [2024-11-19 09:47:51,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-19 09:47:51,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:51,611 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:51,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:47:51,612 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:51,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1332464501, now seen corresponding path program 5 times [2024-11-19 09:47:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:51,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613925346] [2024-11-19 09:47:51,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:51,651 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 09:47:51,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:47:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613925346] [2024-11-19 09:47:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613925346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292160445] [2024-11-19 09:47:52,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:52,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:52,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:52,009 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) [2024-11-19 09:47:52,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:47:52,089 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 09:47:52,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:52,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:47:52,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:47:52,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 09:47:52,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292160445] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:52,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:47:52,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 8 [2024-11-19 09:47:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396076544] [2024-11-19 09:47:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:52,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:47:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:47:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:47:52,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 09:47:52,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-19 09:47:52,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:52,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 09:47:52,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:52,691 INFO L124 PetriNetUnfolderBase]: 2265/4447 cut-off events. [2024-11-19 09:47:52,691 INFO L125 PetriNetUnfolderBase]: For 17197/17611 co-relation queries the response was YES. [2024-11-19 09:47:52,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16548 conditions, 4447 events. 2265/4447 cut-off events. For 17197/17611 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 29452 event pairs, 435 based on Foata normal form. 127/4508 useless extension candidates. Maximal degree in co-relation 6766. Up to 1942 conditions per place. [2024-11-19 09:47:52,733 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 50 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-11-19 09:47:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 666 flow [2024-11-19 09:47:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:47:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:47:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-19 09:47:52,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-19 09:47:52,735 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 404 flow. Second operand 4 states and 84 transitions. [2024-11-19 09:47:52,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 666 flow [2024-11-19 09:47:52,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 638 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-19 09:47:52,745 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 438 flow [2024-11-19 09:47:52,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2024-11-19 09:47:52,745 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-11-19 09:47:52,746 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 438 flow [2024-11-19 09:47:52,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-19 09:47:52,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:52,746 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:52,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:47:52,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:52,947 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:47:52,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash 542951729, now seen corresponding path program 6 times [2024-11-19 09:47:52,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473823293] [2024-11-19 09:47:52,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:47:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:52,973 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:47:52,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:47:53,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473823293] [2024-11-19 09:47:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473823293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109100215] [2024-11-19 09:47:53,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:47:53,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:53,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:53,044 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) [2024-11-19 09:47:53,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:47:53,088 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:47:53,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:53,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:47:53,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:47:53,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:47:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109100215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:53,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:53,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2024-11-19 09:47:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061926342] [2024-11-19 09:47:53,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:53,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:47:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:47:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:47:53,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 09:47:53,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 438 flow. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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) [2024-11-19 09:47:53,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:53,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 09:47:53,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:53,461 INFO L124 PetriNetUnfolderBase]: 650/1408 cut-off events. [2024-11-19 09:47:53,461 INFO L125 PetriNetUnfolderBase]: For 5488/5544 co-relation queries the response was YES. [2024-11-19 09:47:53,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 1408 events. 650/1408 cut-off events. For 5488/5544 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8115 event pairs, 49 based on Foata normal form. 129/1530 useless extension candidates. Maximal degree in co-relation 2155. Up to 418 conditions per place. [2024-11-19 09:47:53,467 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2024-11-19 09:47:53,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 734 flow [2024-11-19 09:47:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:47:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:47:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-11-19 09:47:53,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61328125 [2024-11-19 09:47:53,469 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 438 flow. Second operand 8 states and 157 transitions. [2024-11-19 09:47:53,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 734 flow [2024-11-19 09:47:53,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 694 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-19 09:47:53,475 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-11-19 09:47:53,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-11-19 09:47:53,475 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2024-11-19 09:47:53,475 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-11-19 09:47:53,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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) [2024-11-19 09:47:53,479 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-19 09:47:53,479 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:47:53,479 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-19 09:47:53,479 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:47:53,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:53,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:53,680 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1] [2024-11-19 09:47:53,683 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:47:53,683 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:47:53,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:47:53 BasicIcfg [2024-11-19 09:47:53,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:47:53,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:47:53,692 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:47:53,692 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:47:53,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:46" (3/4) ... [2024-11-19 09:47:53,695 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 09:47:53,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 09:47:53,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 09:47:53,700 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-11-19 09:47:53,700 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-19 09:47:53,701 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-19 09:47:53,701 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 09:47:53,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 09:47:53,772 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 09:47:53,772 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:47:53,772 INFO L158 Benchmark]: Toolchain (without parser) took 7581.32ms. Allocated memory was 159.4MB in the beginning and 356.5MB in the end (delta: 197.1MB). Free memory was 91.5MB in the beginning and 183.5MB in the end (delta: -92.1MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,772 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:47:53,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.70ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 123.8MB in the end (delta: -32.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.65ms. Allocated memory is still 159.4MB. Free memory was 123.8MB in the beginning and 122.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,773 INFO L158 Benchmark]: Boogie Preprocessor took 41.50ms. Allocated memory is still 159.4MB. Free memory was 122.2MB in the beginning and 120.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,773 INFO L158 Benchmark]: RCFGBuilder took 362.06ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 98.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,773 INFO L158 Benchmark]: TraceAbstraction took 6768.45ms. Allocated memory was 159.4MB in the beginning and 356.5MB in the end (delta: 197.1MB). Free memory was 97.6MB in the beginning and 187.9MB in the end (delta: -90.3MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,773 INFO L158 Benchmark]: Witness Printer took 80.14ms. Allocated memory is still 356.5MB. Free memory was 187.9MB in the beginning and 183.5MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 09:47:53,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.70ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 123.8MB in the end (delta: -32.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.65ms. Allocated memory is still 159.4MB. Free memory was 123.8MB in the beginning and 122.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.50ms. Allocated memory is still 159.4MB. Free memory was 122.2MB in the beginning and 120.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.06ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 98.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6768.45ms. Allocated memory was 159.4MB in the beginning and 356.5MB in the end (delta: 197.1MB). Free memory was 97.6MB in the beginning and 187.9MB in the end (delta: -90.3MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * Witness Printer took 80.14ms. Allocated memory is still 356.5MB. Free memory was 187.9MB in the beginning and 183.5MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 814 IncrementalHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 9 mSDtfsCounter, 814 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 267 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=438occurred in iteration=10, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 435 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 1823 SizeOfPredicates, 10 NumberOfNonLiveVariables, 484 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 154/220 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 09:47:53,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE