./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.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 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:01:28,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:01:28,573 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:01:28,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:01:28,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:01:28,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:01:28,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:01:28,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:01:28,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:01:28,613 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:01:28,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:01:28,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:01:28,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:01:28,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:01:28,617 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:01:28,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:01:28,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:01:28,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:01:28,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:01:28,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:01:28,619 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:01:28,619 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:01:28,620 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:01:28,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:01:28,620 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:01:28,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:01:28,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:01:28,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:01:28,622 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:01:28,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:01:28,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:01:28,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:01:28,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:01:28,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:01:28,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:01:28,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:01:28,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:01:28,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:01:28,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:01:28,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:01:28,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:01:28,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:01:28,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed [2024-11-12 16:01:28,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:01:28,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:01:28,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:01:28,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:01:28,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:01:28,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-12 16:01:30,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:01:30,671 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:01:30,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-12 16:01:30,685 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3333b76e/afdc8e9497ac4dd4a5b2e8a36584f856/FLAG2f0f4d079 [2024-11-12 16:01:30,984 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3333b76e/afdc8e9497ac4dd4a5b2e8a36584f856 [2024-11-12 16:01:30,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:01:30,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:01:30,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:01:30,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:01:30,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:01:30,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:01:30" (1/1) ... [2024-11-12 16:01:30,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d358990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:30, skipping insertion in model container [2024-11-12 16:01:30,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:01:30" (1/1) ... [2024-11-12 16:01:31,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:01:31,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:01:31,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:01:31,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:01:31,503 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:01:31,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31 WrapperNode [2024-11-12 16:01:31,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:01:31,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:01:31,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:01:31,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:01:31,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,551 INFO L138 Inliner]: procedures = 166, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-11-12 16:01:31,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:01:31,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:01:31,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:01:31,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:01:31,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,579 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-12 16:01:31,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:01:31,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:01:31,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:01:31,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:01:31,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (1/1) ... [2024-11-12 16:01:31,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:01:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:01:31,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:01:31,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:01:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 16:01:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 16:01:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 16:01:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 16:01:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:01:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:01:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 16:01:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 16:01:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 16:01:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:01:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:01:31,667 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:01:31,795 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:01:31,797 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:01:31,964 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:01:31,964 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:01:32,085 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:01:32,085 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 16:01:32,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:01:32 BoogieIcfgContainer [2024-11-12 16:01:32,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:01:32,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:01:32,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:01:32,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:01:32,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:01:30" (1/3) ... [2024-11-12 16:01:32,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4497c275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:01:32, skipping insertion in model container [2024-11-12 16:01:32,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:31" (2/3) ... [2024-11-12 16:01:32,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4497c275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:01:32, skipping insertion in model container [2024-11-12 16:01:32,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:01:32" (3/3) ... [2024-11-12 16:01:32,096 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-11-12 16:01:32,113 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:01:32,113 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:01:32,113 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:01:32,161 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:32,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 21 transitions, 46 flow [2024-11-12 16:01:32,215 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-12 16:01:32,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:32,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 2/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-12 16:01:32,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 21 transitions, 46 flow [2024-11-12 16:01:32,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 21 transitions, 46 flow [2024-11-12 16:01:32,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:32,237 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;@7926d3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:32,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:01:32,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:32,241 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:32,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:32,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:32,242 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:32,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:01:32,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 227054, now seen corresponding path program 1 times [2024-11-12 16:01:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380133597] [2024-11-12 16:01:32,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:32,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380133597] [2024-11-12 16:01:32,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380133597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:32,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:32,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:32,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770727157] [2024-11-12 16:01:32,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:32,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:32,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:32,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:01:32,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:32,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:32,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:01:32,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:32,499 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-11-12 16:01:32,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:32,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 61 events. 21/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 18 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 103. Up to 51 conditions per place. [2024-11-12 16:01:32,502 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 13 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2024-11-12 16:01:32,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 64 flow [2024-11-12 16:01:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 25 transitions. [2024-11-12 16:01:32,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-12 16:01:32,515 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 46 flow. Second operand 2 states and 25 transitions. [2024-11-12 16:01:32,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 64 flow [2024-11-12 16:01:32,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:32,520 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 38 flow [2024-11-12 16:01:32,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2024-11-12 16:01:32,527 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2024-11-12 16:01:32,527 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 38 flow [2024-11-12 16:01:32,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:32,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:32,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 16:01:32,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:01:32,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:01:32,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash 218197767, now seen corresponding path program 1 times [2024-11-12 16:01:32,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:32,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121900370] [2024-11-12 16:01:32,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:32,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:32,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121900370] [2024-11-12 16:01:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121900370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:32,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:32,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:01:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428285313] [2024-11-12 16:01:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:32,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:01:32,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:32,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:01:32,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:01:32,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-12 16:01:32,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:32,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:32,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-12 16:01:32,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:32,706 INFO L124 PetriNetUnfolderBase]: 21/58 cut-off events. [2024-11-12 16:01:32,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:32,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 58 events. 21/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 12 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 110. Up to 35 conditions per place. [2024-11-12 16:01:32,710 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 13 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2024-11-12 16:01:32,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 70 flow [2024-11-12 16:01:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:01:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:01:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2024-11-12 16:01:32,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-12 16:01:32,712 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 38 flow. Second operand 3 states and 28 transitions. [2024-11-12 16:01:32,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 70 flow [2024-11-12 16:01:32,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:32,714 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 40 flow [2024-11-12 16:01:32,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2024-11-12 16:01:32,716 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-11-12 16:01:32,716 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 40 flow [2024-11-12 16:01:32,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:32,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:32,717 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 16:01:32,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:01:32,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:01:32,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1825818601, now seen corresponding path program 1 times [2024-11-12 16:01:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138237576] [2024-11-12 16:01:32,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:32,751 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:01:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:32,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:01:32,793 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:01:32,795 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-12 16:01:32,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-12 16:01:32,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-12 16:01:32,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-12 16:01:32,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:01:32,800 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-12 16:01:32,804 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:01:32,804 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 16:01:32,860 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 80 flow [2024-11-12 16:01:32,877 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-12 16:01:32,878 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:01:32,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 44 events. 4/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2024-11-12 16:01:32,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 80 flow [2024-11-12 16:01:32,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 80 flow [2024-11-12 16:01:32,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:32,884 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;@7926d3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:32,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-12 16:01:32,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:32,887 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:32,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:32,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:32,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:32,888 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:01:32,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash 261809, now seen corresponding path program 1 times [2024-11-12 16:01:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949864557] [2024-11-12 16:01:32,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:32,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:32,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:32,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949864557] [2024-11-12 16:01:32,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949864557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:32,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:32,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605435786] [2024-11-12 16:01:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:32,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:32,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:32,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-11-12 16:01:32,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 80 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:32,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:32,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-11-12 16:01:32,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:33,164 INFO L124 PetriNetUnfolderBase]: 510/930 cut-off events. [2024-11-12 16:01:33,165 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-12 16:01:33,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 930 events. 510/930 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4090 event pairs, 468 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 1108. Up to 801 conditions per place. [2024-11-12 16:01:33,178 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 23 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-11-12 16:01:33,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 116 flow [2024-11-12 16:01:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2024-11-12 16:01:33,181 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-12 16:01:33,182 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 80 flow. Second operand 2 states and 42 transitions. [2024-11-12 16:01:33,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 116 flow [2024-11-12 16:01:33,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:33,185 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 70 flow [2024-11-12 16:01:33,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-12 16:01:33,186 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-12 16:01:33,188 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 70 flow [2024-11-12 16:01:33,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:33,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:33,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 16:01:33,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:01:33,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:01:33,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:33,190 INFO L85 PathProgramCache]: Analyzing trace with hash 251611351, now seen corresponding path program 1 times [2024-11-12 16:01:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:33,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381926709] [2024-11-12 16:01:33,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381926709] [2024-11-12 16:01:33,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381926709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:33,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:33,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:01:33,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971533485] [2024-11-12 16:01:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:33,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:01:33,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:01:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:01:33,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-12 16:01:33,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:33,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:33,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-12 16:01:33,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:33,405 INFO L124 PetriNetUnfolderBase]: 525/911 cut-off events. [2024-11-12 16:01:33,405 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-12 16:01:33,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 911 events. 525/911 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3650 event pairs, 252 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 1785. Up to 451 conditions per place. [2024-11-12 16:01:33,412 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 39 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-11-12 16:01:33,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 193 flow [2024-11-12 16:01:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:01:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:01:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-12 16:01:33,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-12 16:01:33,415 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 70 flow. Second operand 3 states and 62 transitions. [2024-11-12 16:01:33,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 193 flow [2024-11-12 16:01:33,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:33,418 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 91 flow [2024-11-12 16:01:33,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-12 16:01:33,420 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-11-12 16:01:33,420 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 91 flow [2024-11-12 16:01:33,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:33,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:33,421 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-12 16:01:33,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:01:33,422 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:01:33,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1222877140, now seen corresponding path program 1 times [2024-11-12 16:01:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112713437] [2024-11-12 16:01:33,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:33,448 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:01:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:33,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:01:33,467 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:01:33,467 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-12 16:01:33,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-12 16:01:33,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-12 16:01:33,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-12 16:01:33,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-12 16:01:33,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:01:33,469 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-12 16:01:33,470 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:01:33,471 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 16:01:33,506 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:33,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 49 transitions, 116 flow [2024-11-12 16:01:33,516 INFO L124 PetriNetUnfolderBase]: 6/63 cut-off events. [2024-11-12 16:01:33,516 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 16:01:33,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 6/63 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-11-12 16:01:33,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 49 transitions, 116 flow [2024-11-12 16:01:33,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 49 transitions, 116 flow [2024-11-12 16:01:33,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:33,525 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;@7926d3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:33,526 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-12 16:01:33,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:33,528 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:33,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:33,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:33,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:33,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:01:33,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 310466, now seen corresponding path program 1 times [2024-11-12 16:01:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389882873] [2024-11-12 16:01:33,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:33,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:33,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:33,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389882873] [2024-11-12 16:01:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389882873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:33,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918389310] [2024-11-12 16:01:33,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:33,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:33,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-11-12 16:01:33,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:33,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-11-12 16:01:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:34,763 INFO L124 PetriNetUnfolderBase]: 8088/12296 cut-off events. [2024-11-12 16:01:34,765 INFO L125 PetriNetUnfolderBase]: For 724/724 co-relation queries the response was YES. [2024-11-12 16:01:34,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23733 conditions, 12296 events. 8088/12296 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 72157 event pairs, 7668 based on Foata normal form. 0/10800 useless extension candidates. Maximal degree in co-relation 2600. Up to 11001 conditions per place. [2024-11-12 16:01:34,870 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 33 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-12 16:01:34,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 170 flow [2024-11-12 16:01:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 59 transitions. [2024-11-12 16:01:34,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-12 16:01:34,873 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 116 flow. Second operand 2 states and 59 transitions. [2024-11-12 16:01:34,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 170 flow [2024-11-12 16:01:34,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 168 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:34,876 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 102 flow [2024-11-12 16:01:34,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-12 16:01:34,877 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2024-11-12 16:01:34,877 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 102 flow [2024-11-12 16:01:34,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:34,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:34,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 16:01:34,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 16:01:34,879 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:01:34,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 298384789, now seen corresponding path program 1 times [2024-11-12 16:01:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11894097] [2024-11-12 16:01:34,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11894097] [2024-11-12 16:01:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11894097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:34,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:34,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:01:34,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437894516] [2024-11-12 16:01:34,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:34,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:01:34,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:01:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:01:34,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 49 [2024-11-12 16:01:34,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:34,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:34,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 49 [2024-11-12 16:01:34,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:36,102 INFO L124 PetriNetUnfolderBase]: 9048/13148 cut-off events. [2024-11-12 16:01:36,102 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-11-12 16:01:36,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26145 conditions, 13148 events. 9048/13148 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 70081 event pairs, 3549 based on Foata normal form. 0/12344 useless extension candidates. Maximal degree in co-relation 26139. Up to 8869 conditions per place. [2024-11-12 16:01:36,185 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 57 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-12 16:01:36,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 284 flow [2024-11-12 16:01:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:01:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:01:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-12 16:01:36,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-12 16:01:36,188 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 102 flow. Second operand 3 states and 88 transitions. [2024-11-12 16:01:36,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 284 flow [2024-11-12 16:01:36,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:36,191 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 132 flow [2024-11-12 16:01:36,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-12 16:01:36,191 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2024-11-12 16:01:36,192 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 132 flow [2024-11-12 16:01:36,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:36,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:36,192 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-12 16:01:36,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:01:36,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:01:36,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1126466602, now seen corresponding path program 1 times [2024-11-12 16:01:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:36,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623718641] [2024-11-12 16:01:36,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:36,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:36,206 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:01:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:36,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:01:36,217 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:01:36,217 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-12 16:01:36,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-12 16:01:36,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-12 16:01:36,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-12 16:01:36,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-12 16:01:36,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-12 16:01:36,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 16:01:36,219 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-12 16:01:36,219 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:01:36,219 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-12 16:01:36,262 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:36,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 63 transitions, 154 flow [2024-11-12 16:01:36,274 INFO L124 PetriNetUnfolderBase]: 8/82 cut-off events. [2024-11-12 16:01:36,274 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 16:01:36,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 82 events. 8/82 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 246 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 75. Up to 5 conditions per place. [2024-11-12 16:01:36,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 63 transitions, 154 flow [2024-11-12 16:01:36,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 63 transitions, 154 flow [2024-11-12 16:01:36,278 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:36,280 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;@7926d3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:36,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-12 16:01:36,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:36,282 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:36,282 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:36,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:36,282 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:36,282 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 16:01:36,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash 373025, now seen corresponding path program 1 times [2024-11-12 16:01:36,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:36,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439757786] [2024-11-12 16:01:36,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:36,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:36,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:36,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439757786] [2024-11-12 16:01:36,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439757786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:36,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:36,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:36,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126349805] [2024-11-12 16:01:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:36,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:36,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 63 [2024-11-12 16:01:36,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:36,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:36,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 63 [2024-11-12 16:01:36,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:48,674 INFO L124 PetriNetUnfolderBase]: 110868/152924 cut-off events. [2024-11-12 16:01:48,675 INFO L125 PetriNetUnfolderBase]: For 12416/12416 co-relation queries the response was YES. [2024-11-12 16:01:49,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298362 conditions, 152924 events. 110868/152924 cut-off events. For 12416/12416 co-relation queries the response was YES. Maximal size of possible extension queue 3414. Compared 1036013 event pairs, 106668 based on Foata normal form. 0/134616 useless extension candidates. Maximal degree in co-relation 23839. Up to 140001 conditions per place. [2024-11-12 16:01:49,772 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 43 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2024-11-12 16:01:49,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 226 flow [2024-11-12 16:01:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2024-11-12 16:01:49,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-12 16:01:49,775 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 154 flow. Second operand 2 states and 76 transitions. [2024-11-12 16:01:49,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 226 flow [2024-11-12 16:01:49,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 220 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:49,787 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 134 flow [2024-11-12 16:01:49,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-11-12 16:01:49,788 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-11-12 16:01:49,789 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 134 flow [2024-11-12 16:01:49,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:49,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:49,789 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 16:01:49,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 16:01:49,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 16:01:49,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash 358518913, now seen corresponding path program 1 times [2024-11-12 16:01:49,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:49,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171265473] [2024-11-12 16:01:49,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:49,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171265473] [2024-11-12 16:01:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171265473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:49,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:49,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:01:49,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337794045] [2024-11-12 16:01:49,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:49,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:01:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:01:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:01:49,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-12 16:01:49,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:49,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:49,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-12 16:01:49,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:02:00,671 INFO L124 PetriNetUnfolderBase]: 138114/182648 cut-off events. [2024-11-12 16:02:00,671 INFO L125 PetriNetUnfolderBase]: For 4666/4666 co-relation queries the response was YES. [2024-11-12 16:02:01,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365566 conditions, 182648 events. 138114/182648 cut-off events. For 4666/4666 co-relation queries the response was YES. Maximal size of possible extension queue 3636. Compared 1116555 event pairs, 45867 based on Foata normal form. 0/170309 useless extension candidates. Maximal degree in co-relation 365559. Up to 145462 conditions per place. [2024-11-12 16:02:02,105 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 75 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-12 16:02:02,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 375 flow [2024-11-12 16:02:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:02:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:02:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-12 16:02:02,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-12 16:02:02,107 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 134 flow. Second operand 3 states and 114 transitions. [2024-11-12 16:02:02,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 375 flow [2024-11-12 16:02:02,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 89 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:02:02,119 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 173 flow [2024-11-12 16:02:02,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-12 16:02:02,120 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-11-12 16:02:02,120 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 173 flow [2024-11-12 16:02:02,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:02:02,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:02:02,121 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-12 16:02:02,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 16:02:02,121 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 16:02:02,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:02:02,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1251239933, now seen corresponding path program 1 times [2024-11-12 16:02:02,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:02:02,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293096402] [2024-11-12 16:02:02,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:02:02,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:02:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:02:02,134 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:02:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:02:02,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:02:02,147 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:02:02,147 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-12 16:02:02,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-12 16:02:02,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-12 16:02:02,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-12 16:02:02,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-12 16:02:02,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-12 16:02:02,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-12 16:02:02,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 16:02:02,152 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-12 16:02:02,153 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:02:02,155 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-12 16:02:02,193 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:02:02,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 194 flow [2024-11-12 16:02:02,204 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2024-11-12 16:02:02,204 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-12 16:02:02,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 101 events. 10/101 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2024-11-12 16:02:02,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 194 flow [2024-11-12 16:02:02,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 77 transitions, 194 flow [2024-11-12 16:02:02,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:02:02,210 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;@7926d3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:02:02,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-12 16:02:02,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:02:02,213 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:02:02,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:02:02,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:02:02,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:02:02,213 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-12 16:02:02,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:02:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash 449486, now seen corresponding path program 1 times [2024-11-12 16:02:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:02:02,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742067327] [2024-11-12 16:02:02,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:02:02,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:02:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:02:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:02:02,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:02:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742067327] [2024-11-12 16:02:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742067327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:02:02,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:02:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:02:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325857945] [2024-11-12 16:02:02,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:02:02,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:02:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:02:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:02:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:02:02,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-11-12 16:02:02,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:02:02,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:02:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-11-12 16:02:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand