./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/35_double_lock_p3_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 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:48:48,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:48:48,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:48:48,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:48:48,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:48:48,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:48:48,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:48:48,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:48:48,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:48:48,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:48:48,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:48:48,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:48:48,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:48:48,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:48:48,171 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:48:48,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:48:48,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:48:48,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:48:48,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:48:48,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:48:48,172 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:48:48,175 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:48:48,175 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:48:48,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:48:48,176 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:48:48,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:48:48,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:48:48,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:48:48,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:48:48,176 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:48:48,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:48:48,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:48:48,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:48:48,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:48,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:48:48,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:48:48,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:48:48,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:48:48,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:48:48,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:48:48,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:48:48,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:48:48,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2024-11-10 17:48:48,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:48:48,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:48:48,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:48:48,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:48:48,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:48:48,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-10 17:48:49,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:48:49,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:48:49,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-10 17:48:49,807 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f6859a0c/20243e04e06b41d0a61836e65cb42a87/FLAG304c8bdf9 [2024-11-10 17:48:50,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f6859a0c/20243e04e06b41d0a61836e65cb42a87 [2024-11-10 17:48:50,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:48:50,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:48:50,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:50,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:48:50,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:48:50,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252f234b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50, skipping insertion in model container [2024-11-10 17:48:50,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:48:50,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:50,536 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:48:50,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:50,600 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:48:50,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50 WrapperNode [2024-11-10 17:48:50,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:50,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:50,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:48:50,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:48:50,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,637 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2024-11-10 17:48:50,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:50,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:48:50,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:48:50,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:48:50,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,666 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]. [2024-11-10 17:48:50,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,669 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:48:50,678 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:48:50,678 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:48:50,678 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:48:50,679 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (1/1) ... [2024-11-10 17:48:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:50,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:48:50,711 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) [2024-11-10 17:48:50,713 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 [2024-11-10 17:48:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-10 17:48:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-10 17:48:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 17:48:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 17:48:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 17:48:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:48:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:48:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:48:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 17:48:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:48:50,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:48:50,757 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:48:50,874 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:48:50,876 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:48:51,015 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:48:51,015 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:48:51,103 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:48:51,103 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:48:51,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:51 BoogieIcfgContainer [2024-11-10 17:48:51,104 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:48:51,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:48:51,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:48:51,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:48:51,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:48:50" (1/3) ... [2024-11-10 17:48:51,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a16abcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:51, skipping insertion in model container [2024-11-10 17:48:51,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:50" (2/3) ... [2024-11-10 17:48:51,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a16abcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:51, skipping insertion in model container [2024-11-10 17:48:51,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:51" (3/3) ... [2024-11-10 17:48:51,110 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-11-10 17:48:51,126 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:48:51,126 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:48:51,127 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:48:51,165 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:51,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 43 transitions, 94 flow [2024-11-10 17:48:51,210 INFO L124 PetriNetUnfolderBase]: 7/49 cut-off events. [2024-11-10 17:48:51,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:51,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 7/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2024-11-10 17:48:51,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 43 transitions, 94 flow [2024-11-10 17:48:51,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 42 transitions, 91 flow [2024-11-10 17:48:51,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:51,229 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;@5c120505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:51,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 17:48:51,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:51,234 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 17:48:51,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:51,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:51,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 17:48:51,235 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)] === [2024-11-10 17:48:51,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1950450350, now seen corresponding path program 1 times [2024-11-10 17:48:51,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067812711] [2024-11-10 17:48:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:51,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:51,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:51,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067812711] [2024-11-10 17:48:51,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067812711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:51,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846447677] [2024-11-10 17:48:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:51,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:51,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:51,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 17:48:51,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 91 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-10 17:48:51,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:51,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 17:48:51,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:51,562 INFO L124 PetriNetUnfolderBase]: 198/374 cut-off events. [2024-11-10 17:48:51,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:51,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 374 events. 198/374 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1980 event pairs, 185 based on Foata normal form. 190/549 useless extension candidates. Maximal degree in co-relation 720. Up to 343 conditions per place. [2024-11-10 17:48:51,574 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 20 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-11-10 17:48:51,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 109 flow [2024-11-10 17:48:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-10 17:48:51,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-10 17:48:51,584 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 91 flow. Second operand 2 states and 54 transitions. [2024-11-10 17:48:51,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 109 flow [2024-11-10 17:48:51,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:48:51,588 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 68 flow [2024-11-10 17:48:51,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-10 17:48:51,592 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2024-11-10 17:48:51,592 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 68 flow [2024-11-10 17:48:51,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-10 17:48:51,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:51,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:51,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:48:51,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 17:48:51,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1175328824, now seen corresponding path program 1 times [2024-11-10 17:48:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:51,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828621458] [2024-11-10 17:48:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828621458] [2024-11-10 17:48:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828621458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436938873] [2024-11-10 17:48:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:51,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:48:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:48:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:48:51,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 17:48:51,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-10 17:48:51,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:51,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 17:48:51,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:51,758 INFO L124 PetriNetUnfolderBase]: 140/272 cut-off events. [2024-11-10 17:48:51,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:51,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 272 events. 140/272 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1343 event pairs, 130 based on Foata normal form. 35/296 useless extension candidates. Maximal degree in co-relation 528. Up to 248 conditions per place. [2024-11-10 17:48:51,762 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 18 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2024-11-10 17:48:51,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 100 flow [2024-11-10 17:48:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:48:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:48:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-10 17:48:51,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-10 17:48:51,763 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 68 flow. Second operand 3 states and 62 transitions. [2024-11-10 17:48:51,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 100 flow [2024-11-10 17:48:51,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:51,764 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2024-11-10 17:48:51,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-11-10 17:48:51,765 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2024-11-10 17:48:51,765 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2024-11-10 17:48:51,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-10 17:48:51,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:51,765 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:51,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:48:51,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 17:48:51,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 366021777, now seen corresponding path program 1 times [2024-11-10 17:48:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568010571] [2024-11-10 17:48:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:51,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:48:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:51,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:51,824 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:51,825 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 17:48:51,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-10 17:48:51,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-10 17:48:51,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-10 17:48:51,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-10 17:48:51,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:48:51,828 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 17:48:51,831 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:48:51,831 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 17:48:51,851 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:51,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 168 flow [2024-11-10 17:48:51,866 INFO L124 PetriNetUnfolderBase]: 9/70 cut-off events. [2024-11-10 17:48:51,867 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 17:48:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 9/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2024-11-10 17:48:51,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 168 flow [2024-11-10 17:48:51,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 123 flow [2024-11-10 17:48:51,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:51,870 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;@5c120505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:51,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 17:48:51,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:51,872 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-10 17:48:51,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:51,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:51,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 17:48:51,872 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)] === [2024-11-10 17:48:51,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash 265507503, now seen corresponding path program 1 times [2024-11-10 17:48:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:51,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213674228] [2024-11-10 17:48:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:51,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213674228] [2024-11-10 17:48:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213674228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:51,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:51,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059982693] [2024-11-10 17:48:51,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:51,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:51,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-10 17:48:51,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 123 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2024-11-10 17:48:51,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:51,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-10 17:48:51,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:52,361 INFO L124 PetriNetUnfolderBase]: 3751/5567 cut-off events. [2024-11-10 17:48:52,361 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-10 17:48:52,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11061 conditions, 5567 events. 3751/5567 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 34688 event pairs, 3474 based on Foata normal form. 2126/7378 useless extension candidates. Maximal degree in co-relation 11050. Up to 5348 conditions per place. [2024-11-10 17:48:52,396 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 32 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-11-10 17:48:52,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 165 flow [2024-11-10 17:48:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2024-11-10 17:48:52,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-10 17:48:52,399 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 123 flow. Second operand 2 states and 84 transitions. [2024-11-10 17:48:52,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 165 flow [2024-11-10 17:48:52,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:48:52,402 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 100 flow [2024-11-10 17:48:52,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-11-10 17:48:52,403 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2024-11-10 17:48:52,404 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 100 flow [2024-11-10 17:48:52,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2024-11-10 17:48:52,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:52,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:52,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:48:52,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:48:52,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1420515349, now seen corresponding path program 1 times [2024-11-10 17:48:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:52,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557841398] [2024-11-10 17:48:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557841398] [2024-11-10 17:48:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557841398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:52,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231748131] [2024-11-10 17:48:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:52,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:48:52,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:48:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:48:52,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-10 17:48:52,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:48:52,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:52,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-10 17:48:52,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:52,811 INFO L124 PetriNetUnfolderBase]: 2714/4076 cut-off events. [2024-11-10 17:48:52,812 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-11-10 17:48:52,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8099 conditions, 4076 events. 2714/4076 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24871 event pairs, 2506 based on Foata normal form. 398/4238 useless extension candidates. Maximal degree in co-relation 8094. Up to 3911 conditions per place. [2024-11-10 17:48:52,829 INFO L140 encePairwiseOnDemand]: 72/74 looper letters, 30 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-10 17:48:52,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 156 flow [2024-11-10 17:48:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:48:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:48:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-10 17:48:52,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-11-10 17:48:52,832 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 100 flow. Second operand 3 states and 101 transitions. [2024-11-10 17:48:52,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 156 flow [2024-11-10 17:48:52,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:52,833 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 96 flow [2024-11-10 17:48:52,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-11-10 17:48:52,834 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2024-11-10 17:48:52,834 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 96 flow [2024-11-10 17:48:52,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:48:52,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:52,834 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:52,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:48:52,834 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:48:52,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:52,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1444211708, now seen corresponding path program 1 times [2024-11-10 17:48:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967179403] [2024-11-10 17:48:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:52,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:48:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:52,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:52,863 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:52,863 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 17:48:52,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-10 17:48:52,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-10 17:48:52,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-10 17:48:52,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-10 17:48:52,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-10 17:48:52,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:48:52,866 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 17:48:52,866 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:48:52,866 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 17:48:52,897 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 246 flow [2024-11-10 17:48:52,908 INFO L124 PetriNetUnfolderBase]: 11/91 cut-off events. [2024-11-10 17:48:52,908 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 17:48:52,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 91 events. 11/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2024-11-10 17:48:52,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 246 flow [2024-11-10 17:48:52,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 157 flow [2024-11-10 17:48:52,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:52,912 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;@5c120505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:52,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 17:48:52,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:52,914 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 17:48:52,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:52,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:52,914 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 17:48:52,914 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)] === [2024-11-10 17:48:52,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:52,915 INFO L85 PathProgramCache]: Analyzing trace with hash -896414804, now seen corresponding path program 1 times [2024-11-10 17:48:52,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:52,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030045604] [2024-11-10 17:48:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:52,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:52,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:52,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030045604] [2024-11-10 17:48:52,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030045604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:52,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:52,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568671568] [2024-11-10 17:48:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:52,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:52,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 105 [2024-11-10 17:48:52,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-11-10 17:48:52,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:52,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 105 [2024-11-10 17:48:52,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:57,684 INFO L124 PetriNetUnfolderBase]: 58806/78562 cut-off events. [2024-11-10 17:48:57,685 INFO L125 PetriNetUnfolderBase]: For 3604/3604 co-relation queries the response was YES. [2024-11-10 17:48:57,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157020 conditions, 78562 events. 58806/78562 cut-off events. For 3604/3604 co-relation queries the response was YES. Maximal size of possible extension queue 3177. Compared 534178 event pairs, 54173 based on Foata normal form. 23421/96915 useless extension candidates. Maximal degree in co-relation 157008. Up to 76375 conditions per place. [2024-11-10 17:48:58,112 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 44 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2024-11-10 17:48:58,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 223 flow [2024-11-10 17:48:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 114 transitions. [2024-11-10 17:48:58,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-10 17:48:58,114 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 157 flow. Second operand 2 states and 114 transitions. [2024-11-10 17:48:58,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 223 flow [2024-11-10 17:48:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 17:48:58,122 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 132 flow [2024-11-10 17:48:58,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-10 17:48:58,123 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2024-11-10 17:48:58,123 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 132 flow [2024-11-10 17:48:58,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-11-10 17:48:58,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:58,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:58,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:48:58,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 17:48:58,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1743904046, now seen corresponding path program 1 times [2024-11-10 17:48:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:58,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497839786] [2024-11-10 17:48:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:58,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:48:58,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:58,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497839786] [2024-11-10 17:48:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497839786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:58,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139574027] [2024-11-10 17:48:58,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:58,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:48:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:48:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:48:58,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 105 [2024-11-10 17:48:58,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-10 17:48:58,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:58,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 105 [2024-11-10 17:48:58,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:49:01,248 INFO L124 PetriNetUnfolderBase]: 43007/57824 cut-off events. [2024-11-10 17:49:01,249 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2024-11-10 17:49:01,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115209 conditions, 57824 events. 43007/57824 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 2560. Compared 388963 event pairs, 39532 based on Foata normal form. 4391/58414 useless extension candidates. Maximal degree in co-relation 115203. Up to 56183 conditions per place. [2024-11-10 17:49:01,581 INFO L140 encePairwiseOnDemand]: 103/105 looper letters, 42 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-10 17:49:01,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 212 flow [2024-11-10 17:49:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:49:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:49:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-10 17:49:01,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-10 17:49:01,583 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 132 flow. Second operand 3 states and 140 transitions. [2024-11-10 17:49:01,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 212 flow [2024-11-10 17:49:01,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:49:01,589 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 128 flow [2024-11-10 17:49:01,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-10 17:49:01,591 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2024-11-10 17:49:01,591 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 128 flow [2024-11-10 17:49:01,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-10 17:49:01,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:01,592 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:49:01,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:49:01,593 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)] === [2024-11-10 17:49:01,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash 523228692, now seen corresponding path program 1 times [2024-11-10 17:49:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:01,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233640553] [2024-11-10 17:49:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:49:01,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:49:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:49:01,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:49:01,624 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:49:01,624 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 17:49:01,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-10 17:49:01,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-10 17:49:01,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-10 17:49:01,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-10 17:49:01,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-10 17:49:01,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 17:49:01,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:49:01,626 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 17:49:01,626 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:49:01,626 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 17:49:01,664 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:49:01,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 136 transitions, 328 flow [2024-11-10 17:49:01,676 INFO L124 PetriNetUnfolderBase]: 13/112 cut-off events. [2024-11-10 17:49:01,676 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 17:49:01,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 112 events. 13/112 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 326 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 128. Up to 10 conditions per place. [2024-11-10 17:49:01,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 136 transitions, 328 flow [2024-11-10 17:49:01,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 81 transitions, 193 flow [2024-11-10 17:49:01,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:49:01,680 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;@5c120505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:49:01,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 17:49:01,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:49:01,682 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-10 17:49:01,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:49:01,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:01,683 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 17:49:01,683 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)] === [2024-11-10 17:49:01,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1141249975, now seen corresponding path program 1 times [2024-11-10 17:49:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:01,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477998031] [2024-11-10 17:49:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:49:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:49:01,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:49:01,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477998031] [2024-11-10 17:49:01,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477998031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:49:01,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:49:01,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:49:01,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379924457] [2024-11-10 17:49:01,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:49:01,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:49:01,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:49:01,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:49:01,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:49:01,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 136 [2024-11-10 17:49:01,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 193 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2024-11-10 17:49:01,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:49:01,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 136 [2024-11-10 17:49:01,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand