./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 29686c593874684b7702dd35cbbbd25416d0d0dde1b2c7e324de66da32235cfd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:44:04,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:44:04,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:44:04,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:44:04,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:44:04,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:44:04,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:44:04,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:44:04,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:44:04,480 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:44:04,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:44:04,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:44:04,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:44:04,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:44:04,484 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:44:04,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:44:04,485 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:44:04,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:44:04,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:44:04,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:44:04,489 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:44:04,489 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:44:04,489 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:44:04,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:44:04,490 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:44:04,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:44:04,490 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:44:04,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:44:04,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:44:04,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:44:04,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:44:04,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:44:04,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:44:04,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:04,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:44:04,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:44:04,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:44:04,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:44:04,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:44:04,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:44:04,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:44:04,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:44:04,499 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29686c593874684b7702dd35cbbbd25416d0d0dde1b2c7e324de66da32235cfd [2024-10-11 19:44:04,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:44:04,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:44:04,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:44:04,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:44:04,777 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:44:04,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i [2024-10-11 19:44:06,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:44:06,552 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:44:06,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i [2024-10-11 19:44:06,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ad9737e3a/1ace82e25b2c4a9195a4d68d6b14db56/FLAG1b239e66d [2024-10-11 19:44:06,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ad9737e3a/1ace82e25b2c4a9195a4d68d6b14db56 [2024-10-11 19:44:06,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:44:06,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:44:06,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:06,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:44:06,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:44:06,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:06" (1/1) ... [2024-10-11 19:44:06,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2025cb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:06, skipping insertion in model container [2024-10-11 19:44:06,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:06" (1/1) ... [2024-10-11 19:44:06,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:44:07,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:07,289 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:44:07,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:07,393 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:44:07,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07 WrapperNode [2024-10-11 19:44:07,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:07,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:44:07,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:44:07,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:44:07,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,444 INFO L138 Inliner]: procedures = 163, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-10-11 19:44:07,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:44:07,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:44:07,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:44:07,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:44:07,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,480 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [5, 5]. 50 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [5, 5]. The 0 writes are split as follows [0, 0]. [2024-10-11 19:44:07,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:44:07,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:44:07,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:44:07,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:44:07,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (1/1) ... [2024-10-11 19:44:07,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:07,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:07,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:44:07,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:44:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:44:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:44:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 19:44:07,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 19:44:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-10-11 19:44:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:44:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:44:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:44:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:44:07,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:44:07,604 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:44:07,714 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:44:07,716 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:44:07,872 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:44:07,872 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:44:08,008 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:44:08,009 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 19:44:08,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:08 BoogieIcfgContainer [2024-10-11 19:44:08,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:44:08,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:44:08,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:44:08,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:44:08,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:44:06" (1/3) ... [2024-10-11 19:44:08,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4750855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:44:08, skipping insertion in model container [2024-10-11 19:44:08,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:07" (2/3) ... [2024-10-11 19:44:08,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4750855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:44:08, skipping insertion in model container [2024-10-11 19:44:08,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:08" (3/3) ... [2024-10-11 19:44:08,020 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_42-trylock_2mutex.i [2024-10-11 19:44:08,038 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:44:08,038 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 19:44:08,039 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:44:08,079 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 19:44:08,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 32 transitions, 71 flow [2024-10-11 19:44:08,144 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2024-10-11 19:44:08,145 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:44:08,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 31 events. 2/31 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-10-11 19:44:08,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 32 transitions, 71 flow [2024-10-11 19:44:08,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 66 flow [2024-10-11 19:44:08,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:44:08,170 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;@378812d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:44:08,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 19:44:08,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:44:08,201 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2024-10-11 19:44:08,201 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:44:08,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:08,202 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, 1] [2024-10-11 19:44:08,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:08,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1666209011, now seen corresponding path program 1 times [2024-10-11 19:44:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283177542] [2024-10-11 19:44:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283177542] [2024-10-11 19:44:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283177542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:08,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:08,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010124974] [2024-10-11 19:44:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:08,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:44:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:44:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:44:08,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-11 19:44:08,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2024-10-11 19:44:08,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:08,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-11 19:44:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:08,588 INFO L124 PetriNetUnfolderBase]: 71/185 cut-off events. [2024-10-11 19:44:08,589 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:44:08,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 185 events. 71/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 726 event pairs, 63 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 328. Up to 152 conditions per place. [2024-10-11 19:44:08,594 INFO L140 encePairwiseOnDemand]: 31/32 looper letters, 19 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-10-11 19:44:08,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 102 flow [2024-10-11 19:44:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:44:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:44:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2024-10-11 19:44:08,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-11 19:44:08,607 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 66 flow. Second operand 2 states and 42 transitions. [2024-10-11 19:44:08,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 102 flow [2024-10-11 19:44:08,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:08,613 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 60 flow [2024-10-11 19:44:08,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-11 19:44:08,619 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-10-11 19:44:08,621 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 60 flow [2024-10-11 19:44:08,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2024-10-11 19:44:08,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:08,622 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, 1, 1] [2024-10-11 19:44:08,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:44:08,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:08,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1142623064, now seen corresponding path program 1 times [2024-10-11 19:44:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:08,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172251087] [2024-10-11 19:44:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:08,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:08,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172251087] [2024-10-11 19:44:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172251087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:08,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:08,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268112040] [2024-10-11 19:44:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:08,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:08,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:08,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:08,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-11 19:44:08,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-11 19:44:08,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:08,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-11 19:44:08,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:08,961 INFO L124 PetriNetUnfolderBase]: 55/166 cut-off events. [2024-10-11 19:44:08,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:08,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 166 events. 55/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 683 event pairs, 20 based on Foata normal form. 9/164 useless extension candidates. Maximal degree in co-relation 300. Up to 77 conditions per place. [2024-10-11 19:44:08,964 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 24 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-10-11 19:44:08,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 150 flow [2024-10-11 19:44:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-10-11 19:44:08,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-11 19:44:08,967 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 60 flow. Second operand 3 states and 68 transitions. [2024-10-11 19:44:08,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 150 flow [2024-10-11 19:44:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:44:08,971 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2024-10-11 19:44:08,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-10-11 19:44:08,972 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-10-11 19:44:08,972 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2024-10-11 19:44:08,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-11 19:44:08,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:08,973 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, 1, 1] [2024-10-11 19:44:08,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:44:08,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:08,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 950377048, now seen corresponding path program 2 times [2024-10-11 19:44:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:08,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335506191] [2024-10-11 19:44:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335506191] [2024-10-11 19:44:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335506191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:09,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:09,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:44:09,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105777432] [2024-10-11 19:44:09,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:09,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:09,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 19:44:09,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 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) [2024-10-11 19:44:09,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:09,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 19:44:09,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:09,157 INFO L124 PetriNetUnfolderBase]: 53/160 cut-off events. [2024-10-11 19:44:09,157 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-11 19:44:09,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 160 events. 53/160 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 651 event pairs, 44 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 375. Up to 133 conditions per place. [2024-10-11 19:44:09,158 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-10-11 19:44:09,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 150 flow [2024-10-11 19:44:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-11 19:44:09,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-10-11 19:44:09,162 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 3 states and 50 transitions. [2024-10-11 19:44:09,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 150 flow [2024-10-11 19:44:09,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:09,164 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-10-11 19:44:09,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-10-11 19:44:09,165 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-10-11 19:44:09,166 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-10-11 19:44:09,166 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) [2024-10-11 19:44:09,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-10-11 19:44:09,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-11 19:44:09,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:44:09,170 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-10-11 19:44:09,173 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 19:44:09,174 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 19:44:09,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:44:09 BasicIcfg [2024-10-11 19:44:09,183 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 19:44:09,184 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 19:44:09,184 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 19:44:09,185 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 19:44:09,185 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:08" (3/4) ... [2024-10-11 19:44:09,188 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 19:44:09,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-11 19:44:09,222 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-10-11 19:44:09,223 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 19:44:09,223 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 19:44:09,310 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 19:44:09,310 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 19:44:09,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 19:44:09,313 INFO L158 Benchmark]: Toolchain (without parser) took 2429.94ms. Allocated memory is still 148.9MB. Free memory was 81.8MB in the beginning and 114.7MB in the end (delta: -32.9MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,313 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:44:09,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.99ms. Allocated memory is still 148.9MB. Free memory was 81.7MB in the beginning and 105.7MB in the end (delta: -24.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.71ms. Allocated memory is still 148.9MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,315 INFO L158 Benchmark]: Boogie Preprocessor took 54.02ms. Allocated memory is still 148.9MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,317 INFO L158 Benchmark]: RCFGBuilder took 508.79ms. Allocated memory is still 148.9MB. Free memory was 101.6MB in the beginning and 77.8MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,317 INFO L158 Benchmark]: TraceAbstraction took 1171.43ms. Allocated memory is still 148.9MB. Free memory was 77.3MB in the beginning and 44.7MB in the end (delta: 32.6MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,317 INFO L158 Benchmark]: Witness Printer took 126.37ms. Allocated memory is still 148.9MB. Free memory was 44.3MB in the beginning and 114.7MB in the end (delta: -70.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-10-11 19:44:09,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.99ms. Allocated memory is still 148.9MB. Free memory was 81.7MB in the beginning and 105.7MB in the end (delta: -24.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.71ms. Allocated memory is still 148.9MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.02ms. Allocated memory is still 148.9MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.79ms. Allocated memory is still 148.9MB. Free memory was 101.6MB in the beginning and 77.8MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1171.43ms. Allocated memory is still 148.9MB. Free memory was 77.3MB in the beginning and 44.7MB in the end (delta: 32.6MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Witness Printer took 126.37ms. Allocated memory is still 148.9MB. Free memory was 44.3MB in the beginning and 114.7MB in the end (delta: -70.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 19:44:09,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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