./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:20:53,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:20:53,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:20:53,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:20:53,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:20:53,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:20:53,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:20:53,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:20:53,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:20:53,282 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:20:53,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:20:53,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:20:53,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:20:53,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:20:53,286 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:20:53,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:20:53,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:20:53,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:20:53,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:20:53,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:20:53,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:20:53,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:20:53,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:20:53,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:20:53,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:20:53,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:20:53,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:20:53,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:20:53,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:20:53,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:20:53,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:20:53,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:20:53,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:20:53,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:20:53,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:20:53,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:20:53,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 [2024-10-14 19:20:53,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:20:53,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:20:53,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:20:53,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:20:53,532 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:20:53,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-5.i [2024-10-14 19:20:54,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:20:55,072 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:20:55,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-5.i [2024-10-14 19:20:55,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40acc946/13f770bc2de04196ac6022296bcefdb9/FLAGce2821e9e [2024-10-14 19:20:55,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40acc946/13f770bc2de04196ac6022296bcefdb9 [2024-10-14 19:20:55,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:20:55,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:20:55,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:20:55,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:20:55,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:20:55,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4764baab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55, skipping insertion in model container [2024-10-14 19:20:55,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,473 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:20:55,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:20:55,792 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:20:55,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:20:55,869 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:20:55,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55 WrapperNode [2024-10-14 19:20:55,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:20:55,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:20:55,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:20:55,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:20:55,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,914 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-10-14 19:20:55,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:20:55,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:20:55,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:20:55,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:20:55,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,943 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]. [2024-10-14 19:20:55,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:20:55,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:20:55,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:20:55,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:20:55,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (1/1) ... [2024-10-14 19:20:55,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:20:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:20:55,995 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) [2024-10-14 19:20:55,997 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 [2024-10-14 19:20:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 19:20:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 19:20:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 19:20:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 19:20:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:20:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:20:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:20:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:20:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:20:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:20:56,040 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:20:56,140 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:20:56,142 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:20:56,275 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:20:56,275 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:20:56,366 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:20:56,366 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:20:56,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:20:56 BoogieIcfgContainer [2024-10-14 19:20:56,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:20:56,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:20:56,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:20:56,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:20:56,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:20:55" (1/3) ... [2024-10-14 19:20:56,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3b4eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:20:56, skipping insertion in model container [2024-10-14 19:20:56,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:20:55" (2/3) ... [2024-10-14 19:20:56,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3b4eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:20:56, skipping insertion in model container [2024-10-14 19:20:56,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:20:56" (3/3) ... [2024-10-14 19:20:56,378 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2024-10-14 19:20:56,392 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:20:56,392 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:20:56,392 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:20:56,439 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:20:56,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2024-10-14 19:20:56,502 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-14 19:20:56,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:20:56,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-10-14 19:20:56,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2024-10-14 19:20:56,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2024-10-14 19:20:56,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:20:56,528 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;@178c2db8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:20:56,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:20:56,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:20:56,537 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-10-14 19:20:56,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:20:56,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:20:56,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:20:56,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:20:56,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:20:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 563650960, now seen corresponding path program 1 times [2024-10-14 19:20:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:20:56,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982697014] [2024-10-14 19:20:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:56,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:20:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:20:56,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982697014] [2024-10-14 19:20:56,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982697014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:20:56,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:20:56,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:20:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546303121] [2024-10-14 19:20:56,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:20:56,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:20:56,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:20:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:20:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:20:56,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-14 19:20:56,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:20:56,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:20:56,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-14 19:20:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:20:56,937 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-10-14 19:20:56,937 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:20:56,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 292 events. 151/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 993 event pairs, 20 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 521. Up to 172 conditions per place. [2024-10-14 19:20:56,942 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2024-10-14 19:20:56,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2024-10-14 19:20:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:20:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:20:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-14 19:20:56,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-10-14 19:20:56,956 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-10-14 19:20:56,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2024-10-14 19:20:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:20:56,960 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2024-10-14 19:20:56,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-14 19:20:56,964 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-10-14 19:20:56,965 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2024-10-14 19:20:56,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:20:56,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:20:56,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:20:56,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:20:56,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:20:56,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:20:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash -488978942, now seen corresponding path program 1 times [2024-10-14 19:20:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:20:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377148847] [2024-10-14 19:20:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:20:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:20:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377148847] [2024-10-14 19:20:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377148847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:20:57,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414518992] [2024-10-14 19:20:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:57,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:20:57,075 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) [2024-10-14 19:20:57,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:20:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:57,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:20:57,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:20:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:20:57,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:20:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414518992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:20:57,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 19:20:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-14 19:20:57,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971311298] [2024-10-14 19:20:57,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:20:57,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:20:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:20:57,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:20:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:20:57,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-10-14 19:20:57,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-14 19:20:57,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:20:57,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-10-14 19:20:57,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:20:57,275 INFO L124 PetriNetUnfolderBase]: 133/256 cut-off events. [2024-10-14 19:20:57,275 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-14 19:20:57,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 256 events. 133/256 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 816 event pairs, 80 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 494. Up to 204 conditions per place. [2024-10-14 19:20:57,279 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2024-10-14 19:20:57,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2024-10-14 19:20:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:20:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:20:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-14 19:20:57,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-10-14 19:20:57,281 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2024-10-14 19:20:57,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2024-10-14 19:20:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:20:57,285 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2024-10-14 19:20:57,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-10-14 19:20:57,286 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-10-14 19:20:57,286 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2024-10-14 19:20:57,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-14 19:20:57,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:20:57,287 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:20:57,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 19:20:57,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:57,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:20:57,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:20:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash -488977835, now seen corresponding path program 1 times [2024-10-14 19:20:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:20:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926335091] [2024-10-14 19:20:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:20:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:20:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926335091] [2024-10-14 19:20:57,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926335091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:20:57,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047974893] [2024-10-14 19:20:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:57,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:20:57,593 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) [2024-10-14 19:20:57,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:20:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:57,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:20:57,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:20:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:57,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:20:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047974893] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:20:57,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:20:57,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 19:20:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474619457] [2024-10-14 19:20:57,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:20:57,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:20:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:20:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:20:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:20:57,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-14 19:20:57,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2024-10-14 19:20:57,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:20:57,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-14 19:20:57,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:20:57,850 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-10-14 19:20:57,851 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:20:57,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 310 events. 169/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 926 event pairs, 20 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 628. Up to 118 conditions per place. [2024-10-14 19:20:57,857 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-10-14 19:20:57,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2024-10-14 19:20:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:20:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:20:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-14 19:20:57,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-10-14 19:20:57,862 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2024-10-14 19:20:57,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2024-10-14 19:20:57,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:20:57,864 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2024-10-14 19:20:57,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-10-14 19:20:57,865 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-10-14 19:20:57,865 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2024-10-14 19:20:57,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2024-10-14 19:20:57,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:20:57,866 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:20:57,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 19:20:58,070 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,SelfDestructingSolverStorable2 [2024-10-14 19:20:58,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:20:58,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:20:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1932997219, now seen corresponding path program 2 times [2024-10-14 19:20:58,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:20:58,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256324649] [2024-10-14 19:20:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:20:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:58,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:20:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256324649] [2024-10-14 19:20:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256324649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:20:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884785356] [2024-10-14 19:20:58,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:20:58,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:20:58,198 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) [2024-10-14 19:20:58,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:20:58,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:20:58,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:20:58,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:20:58,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:20:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:58,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:20:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884785356] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:20:58,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:20:58,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-14 19:20:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854642874] [2024-10-14 19:20:58,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:20:58,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:20:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:20:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:20:58,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:20:58,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-14 19:20:58,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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) [2024-10-14 19:20:58,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:20:58,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-14 19:20:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:20:58,498 INFO L124 PetriNetUnfolderBase]: 277/472 cut-off events. [2024-10-14 19:20:58,499 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-14 19:20:58,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 472 events. 277/472 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1325 event pairs, 20 based on Foata normal form. 54/524 useless extension candidates. Maximal degree in co-relation 1159. Up to 118 conditions per place. [2024-10-14 19:20:58,503 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-14 19:20:58,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2024-10-14 19:20:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:20:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:20:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-10-14 19:20:58,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-10-14 19:20:58,510 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2024-10-14 19:20:58,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2024-10-14 19:20:58,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 19:20:58,516 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2024-10-14 19:20:58,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-10-14 19:20:58,518 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-10-14 19:20:58,518 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2024-10-14 19:20:58,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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) [2024-10-14 19:20:58,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:20:58,518 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:20:58,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:20:58,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:58,719 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:20:58,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:20:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash 749587747, now seen corresponding path program 3 times [2024-10-14 19:20:58,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:20:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526059745] [2024-10-14 19:20:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:20:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:20:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:58,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:20:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526059745] [2024-10-14 19:20:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526059745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:20:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561933027] [2024-10-14 19:20:58,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:20:58,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:58,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:20:58,899 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) [2024-10-14 19:20:58,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:20:58,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 19:20:58,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:20:58,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:20:58,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:20:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:58,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:20:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:20:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561933027] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:20:59,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:20:59,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-10-14 19:20:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834247376] [2024-10-14 19:20:59,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:20:59,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:20:59,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:20:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:20:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:20:59,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-14 19:20:59,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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) [2024-10-14 19:20:59,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:20:59,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-14 19:20:59,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:20:59,270 INFO L124 PetriNetUnfolderBase]: 313/526 cut-off events. [2024-10-14 19:20:59,270 INFO L125 PetriNetUnfolderBase]: For 972/972 co-relation queries the response was YES. [2024-10-14 19:20:59,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 526 events. 313/526 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1458 event pairs, 20 based on Foata normal form. 18/542 useless extension candidates. Maximal degree in co-relation 1474. Up to 118 conditions per place. [2024-10-14 19:20:59,274 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 87 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-10-14 19:20:59,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 533 flow [2024-10-14 19:20:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:20:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:20:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 284 transitions. [2024-10-14 19:20:59,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5966386554621849 [2024-10-14 19:20:59,279 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 14 states and 284 transitions. [2024-10-14 19:20:59,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 533 flow [2024-10-14 19:20:59,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 481 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-10-14 19:20:59,286 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 173 flow [2024-10-14 19:20:59,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2024-10-14 19:20:59,287 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2024-10-14 19:20:59,288 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 173 flow [2024-10-14 19:20:59,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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) [2024-10-14 19:20:59,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:20:59,289 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:20:59,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 19:20:59,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:20:59,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:20:59,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:20:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash -465204381, now seen corresponding path program 4 times [2024-10-14 19:20:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:20:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787501103] [2024-10-14 19:20:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:20:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:20:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:21:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:21:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:21:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787501103] [2024-10-14 19:21:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787501103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:21:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364263736] [2024-10-14 19:21:00,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:21:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:21:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:21:00,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:21:00,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:21:00,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:21:00,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:21:00,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-14 19:21:00,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:21:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:21:00,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:21:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:21:01,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364263736] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:21:01,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:21:01,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 54 [2024-10-14 19:21:01,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682808241] [2024-10-14 19:21:01,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:21:01,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-14 19:21:01,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:21:01,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-14 19:21:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2568, Unknown=0, NotChecked=0, Total=2970 [2024-10-14 19:21:01,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-14 19:21:01,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 173 flow. Second operand has 55 states, 55 states have (on average 8.309090909090909) internal successors, (457), 55 states have internal predecessors, (457), 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) [2024-10-14 19:21:01,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:21:01,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-14 19:21:01,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:21:13,721 INFO L124 PetriNetUnfolderBase]: 12499/20442 cut-off events. [2024-10-14 19:21:13,721 INFO L125 PetriNetUnfolderBase]: For 30513/30513 co-relation queries the response was YES. [2024-10-14 19:21:13,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52640 conditions, 20442 events. 12499/20442 cut-off events. For 30513/30513 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 129724 event pairs, 70 based on Foata normal form. 0/20159 useless extension candidates. Maximal degree in co-relation 52619. Up to 2607 conditions per place. [2024-10-14 19:21:13,836 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 505 selfloop transitions, 455 changer transitions 613/1577 dead transitions. [2024-10-14 19:21:13,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1577 transitions, 8872 flow [2024-10-14 19:21:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2024-10-14 19:21:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2024-10-14 19:21:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 2373 transitions. [2024-10-14 19:21:13,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45028462998102464 [2024-10-14 19:21:13,853 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 173 flow. Second operand 155 states and 2373 transitions. [2024-10-14 19:21:13,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1577 transitions, 8872 flow [2024-10-14 19:21:13,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1577 transitions, 7874 flow, removed 210 selfloop flow, removed 11 redundant places. [2024-10-14 19:21:13,994 INFO L231 Difference]: Finished difference. Result has 270 places, 539 transitions, 3243 flow [2024-10-14 19:21:13,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=155, PETRI_FLOW=3243, PETRI_PLACES=270, PETRI_TRANSITIONS=539} [2024-10-14 19:21:13,995 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 236 predicate places. [2024-10-14 19:21:13,996 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 539 transitions, 3243 flow [2024-10-14 19:21:13,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 8.309090909090909) internal successors, (457), 55 states have internal predecessors, (457), 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) [2024-10-14 19:21:13,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:21:13,997 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:21:14,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:21:14,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:21:14,202 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:21:14,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:21:14,203 INFO L85 PathProgramCache]: Analyzing trace with hash 170006399, now seen corresponding path program 1 times [2024-10-14 19:21:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:21:14,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926516373] [2024-10-14 19:21:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:21:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:21:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:21:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:21:14,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:21:14,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926516373] [2024-10-14 19:21:14,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926516373] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:21:14,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239393332] [2024-10-14 19:21:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:21:14,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:21:14,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:21:14,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:21:14,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:21:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:21:15,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-14 19:21:15,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:21:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 55 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:21:15,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:21:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:21:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239393332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:21:16,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:21:16,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2024-10-14 19:21:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334855616] [2024-10-14 19:21:16,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:21:16,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-14 19:21:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:21:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-14 19:21:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=3340, Unknown=0, NotChecked=0, Total=3782 [2024-10-14 19:21:16,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-14 19:21:16,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 539 transitions, 3243 flow. Second operand has 62 states, 62 states have (on average 8.35483870967742) internal successors, (518), 62 states have internal predecessors, (518), 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) [2024-10-14 19:21:16,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:21:16,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-14 19:21:16,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand