./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.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 22f5e9b8cea3fb6414e4865b1626afaeb55342d9f0f16512cd01a49134cc1f25 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:53:09,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:53:09,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 18:53:09,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:53:09,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:53:09,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:53:09,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:53:09,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:53:09,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:53:09,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:53:09,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:53:09,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:53:09,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:53:09,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:53:09,779 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:53:09,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:53:09,780 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 18:53:09,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:53:09,781 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 18:53:09,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:53:09,784 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:53:09,785 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:53:09,785 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:53:09,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:53:09,785 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:53:09,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:53:09,786 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:53:09,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 18:53:09,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:53:09,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:53:09,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:53:09,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:53:09,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:53:09,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:53:09,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:53:09,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:53:09,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 18:53:09,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 18:53:09,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:53:09,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:53:09,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:53:09,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:53:09,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f5e9b8cea3fb6414e4865b1626afaeb55342d9f0f16512cd01a49134cc1f25 [2024-10-24 18:53:10,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:53:10,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:53:10,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:53:10,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:53:10,095 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:53:10,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2024-10-24 18:53:11,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:53:11,815 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:53:11,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2024-10-24 18:53:11,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56843a27a/f2e96aecde7b42cd8a934313d2a6dffa/FLAGd07189867 [2024-10-24 18:53:12,148 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56843a27a/f2e96aecde7b42cd8a934313d2a6dffa [2024-10-24 18:53:12,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:53:12,152 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:53:12,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:53:12,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:53:12,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:53:12,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622a3129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12, skipping insertion in model container [2024-10-24 18:53:12,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,208 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:53:12,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:53:12,639 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 18:53:12,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:53:12,746 INFO L204 MainTranslator]: Completed translation [2024-10-24 18:53:12,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12 WrapperNode [2024-10-24 18:53:12,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:53:12,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 18:53:12,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 18:53:12,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 18:53:12,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,805 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 137 [2024-10-24 18:53:12,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 18:53:12,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 18:53:12,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 18:53:12,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 18:53:12,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,849 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-24 18:53:12,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 18:53:12,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 18:53:12,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 18:53:12,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 18:53:12,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (1/1) ... [2024-10-24 18:53:12,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:53:12,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:53:12,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 18:53:12,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 18:53:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 18:53:12,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 18:53:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 18:53:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 18:53:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 18:53:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 18:53:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 18:53:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 18:53:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 18:53:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 18:53:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 18:53:12,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 18:53:12,961 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 18:53:13,080 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 18:53:13,081 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 18:53:13,334 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 18:53:13,334 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 18:53:13,559 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 18:53:13,559 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 18:53:13,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:53:13 BoogieIcfgContainer [2024-10-24 18:53:13,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 18:53:13,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 18:53:13,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 18:53:13,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 18:53:13,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:53:12" (1/3) ... [2024-10-24 18:53:13,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88468d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:53:13, skipping insertion in model container [2024-10-24 18:53:13,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:12" (2/3) ... [2024-10-24 18:53:13,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88468d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:53:13, skipping insertion in model container [2024-10-24 18:53:13,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:53:13" (3/3) ... [2024-10-24 18:53:13,572 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1.i [2024-10-24 18:53:13,592 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 18:53:13,594 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 18:53:13,594 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 18:53:13,656 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 18:53:13,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 41 transitions, 86 flow [2024-10-24 18:53:13,733 INFO L124 PetriNetUnfolderBase]: 4/45 cut-off events. [2024-10-24 18:53:13,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 18:53:13,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 45 events. 4/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-24 18:53:13,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 41 transitions, 86 flow [2024-10-24 18:53:13,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 86 flow [2024-10-24 18:53:13,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:53:13,765 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;@3aea43ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:53:13,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-24 18:53:13,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 18:53:13,773 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 18:53:13,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 18:53:13,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:13,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 18:53:13,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-10-24 18:53:13,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash 400866, now seen corresponding path program 1 times [2024-10-24 18:53:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:13,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292075604] [2024-10-24 18:53:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:53:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:53:13,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:53:13,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292075604] [2024-10-24 18:53:13,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292075604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:53:13,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:53:13,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:53:13,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498263692] [2024-10-24 18:53:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:53:13,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 18:53:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:53:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 18:53:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 18:53:14,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-10-24 18:53:14,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:53:14,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:53:14,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-10-24 18:53:14,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:53:14,133 INFO L124 PetriNetUnfolderBase]: 49/141 cut-off events. [2024-10-24 18:53:14,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 18:53:14,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 141 events. 49/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 349 event pairs, 40 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 244. Up to 112 conditions per place. [2024-10-24 18:53:14,138 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 26 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-10-24 18:53:14,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 130 flow [2024-10-24 18:53:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 18:53:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 18:53:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 52 transitions. [2024-10-24 18:53:14,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-10-24 18:53:14,153 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 86 flow. Second operand 2 states and 52 transitions. [2024-10-24 18:53:14,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 130 flow [2024-10-24 18:53:14,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 18:53:14,158 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 78 flow [2024-10-24 18:53:14,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-10-24 18:53:14,166 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-24 18:53:14,166 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 78 flow [2024-10-24 18:53:14,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:53:14,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:14,167 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 18:53:14,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 18:53:14,168 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-10-24 18:53:14,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -941198751, now seen corresponding path program 1 times [2024-10-24 18:53:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204747538] [2024-10-24 18:53:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:53:14,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 18:53:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:53:14,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 18:53:14,274 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 18:53:14,276 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-24 18:53:14,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (6 of 8 remaining) [2024-10-24 18:53:14,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-10-24 18:53:14,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (4 of 8 remaining) [2024-10-24 18:53:14,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-10-24 18:53:14,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (2 of 8 remaining) [2024-10-24 18:53:14,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-10-24 18:53:14,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 8 remaining) [2024-10-24 18:53:14,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 18:53:14,282 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 18:53:14,285 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 18:53:14,285 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 18:53:14,342 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 18:53:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 75 transitions, 160 flow [2024-10-24 18:53:14,366 INFO L124 PetriNetUnfolderBase]: 8/84 cut-off events. [2024-10-24 18:53:14,366 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 18:53:14,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 84 events. 8/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 168 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2024-10-24 18:53:14,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 75 transitions, 160 flow [2024-10-24 18:53:14,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 75 transitions, 160 flow [2024-10-24 18:53:14,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:53:14,371 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;@3aea43ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:53:14,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-24 18:53:14,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 18:53:14,374 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 18:53:14,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 18:53:14,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:14,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 18:53:14,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 18:53:14,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 475341, now seen corresponding path program 1 times [2024-10-24 18:53:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139249126] [2024-10-24 18:53:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:14,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:53:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:53:14,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:53:14,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139249126] [2024-10-24 18:53:14,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139249126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:53:14,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:53:14,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:53:14,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440969629] [2024-10-24 18:53:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:53:14,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 18:53:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:53:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 18:53:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 18:53:14,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 75 [2024-10-24 18:53:14,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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) [2024-10-24 18:53:14,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:53:14,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 75 [2024-10-24 18:53:14,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:53:15,100 INFO L124 PetriNetUnfolderBase]: 2473/4399 cut-off events. [2024-10-24 18:53:15,100 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-24 18:53:15,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8254 conditions, 4399 events. 2473/4399 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26008 event pairs, 2140 based on Foata normal form. 0/4203 useless extension candidates. Maximal degree in co-relation 7519. Up to 3787 conditions per place. [2024-10-24 18:53:15,140 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 49 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2024-10-24 18:53:15,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 248 flow [2024-10-24 18:53:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 18:53:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 18:53:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 96 transitions. [2024-10-24 18:53:15,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-24 18:53:15,143 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 160 flow. Second operand 2 states and 96 transitions. [2024-10-24 18:53:15,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 248 flow [2024-10-24 18:53:15,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 18:53:15,145 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 150 flow [2024-10-24 18:53:15,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-10-24 18:53:15,147 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-10-24 18:53:15,147 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 150 flow [2024-10-24 18:53:15,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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) [2024-10-24 18:53:15,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:15,148 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-24 18:53:15,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 18:53:15,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-24 18:53:15,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1322465970, now seen corresponding path program 1 times [2024-10-24 18:53:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:15,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431715712] [2024-10-24 18:53:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:15,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:53:15,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 18:53:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:53:15,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 18:53:15,219 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (9 of 11 remaining) [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 11 remaining) [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (7 of 11 remaining) [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (5 of 11 remaining) [2024-10-24 18:53:15,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2024-10-24 18:53:15,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (3 of 11 remaining) [2024-10-24 18:53:15,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (2 of 11 remaining) [2024-10-24 18:53:15,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (1 of 11 remaining) [2024-10-24 18:53:15,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 11 remaining) [2024-10-24 18:53:15,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 18:53:15,221 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 18:53:15,222 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 18:53:15,222 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 18:53:15,296 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 18:53:15,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 109 transitions, 236 flow [2024-10-24 18:53:15,317 INFO L124 PetriNetUnfolderBase]: 12/123 cut-off events. [2024-10-24 18:53:15,318 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 18:53:15,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 12/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2024-10-24 18:53:15,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 109 transitions, 236 flow [2024-10-24 18:53:15,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 109 transitions, 236 flow [2024-10-24 18:53:15,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:53:15,324 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;@3aea43ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:53:15,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-24 18:53:15,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 18:53:15,326 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 18:53:15,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 18:53:15,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:15,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 18:53:15,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2024-10-24 18:53:15,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 583578, now seen corresponding path program 1 times [2024-10-24 18:53:15,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:15,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831591164] [2024-10-24 18:53:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:53:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:53:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:53:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831591164] [2024-10-24 18:53:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831591164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:53:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:53:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:53:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581408126] [2024-10-24 18:53:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:53:15,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 18:53:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:53:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 18:53:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 18:53:15,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 109 [2024-10-24 18:53:15,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 109 transitions, 236 flow. Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:53:15,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:53:15,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 109 [2024-10-24 18:53:15,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:53:26,059 INFO L124 PetriNetUnfolderBase]: 82297/122658 cut-off events. [2024-10-24 18:53:26,060 INFO L125 PetriNetUnfolderBase]: For 2753/2753 co-relation queries the response was YES. [2024-10-24 18:53:26,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234559 conditions, 122658 events. 82297/122658 cut-off events. For 2753/2753 co-relation queries the response was YES. Maximal size of possible extension queue 2485. Compared 939225 event pairs, 72700 based on Foata normal form. 0/117247 useless extension candidates. Maximal degree in co-relation 172939. Up to 110068 conditions per place. [2024-10-24 18:53:27,235 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 72 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2024-10-24 18:53:27,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 368 flow [2024-10-24 18:53:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 18:53:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 18:53:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 140 transitions. [2024-10-24 18:53:27,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6422018348623854 [2024-10-24 18:53:27,241 INFO L175 Difference]: Start difference. First operand has 104 places, 109 transitions, 236 flow. Second operand 2 states and 140 transitions. [2024-10-24 18:53:27,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 368 flow [2024-10-24 18:53:27,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 366 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 18:53:27,249 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2024-10-24 18:53:27,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-10-24 18:53:27,251 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2024-10-24 18:53:27,251 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2024-10-24 18:53:27,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:53:27,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:27,252 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-24 18:53:27,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 18:53:27,253 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2024-10-24 18:53:27,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1749118944, now seen corresponding path program 1 times [2024-10-24 18:53:27,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:27,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934176416] [2024-10-24 18:53:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:53:27,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 18:53:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:53:27,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 18:53:27,318 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 18:53:27,319 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-24 18:53:27,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (12 of 14 remaining) [2024-10-24 18:53:27,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (11 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (10 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (8 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (7 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (6 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (5 of 14 remaining) [2024-10-24 18:53:27,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2024-10-24 18:53:27,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (3 of 14 remaining) [2024-10-24 18:53:27,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (2 of 14 remaining) [2024-10-24 18:53:27,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (1 of 14 remaining) [2024-10-24 18:53:27,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 14 remaining) [2024-10-24 18:53:27,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 18:53:27,323 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 18:53:27,324 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 18:53:27,324 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 18:53:27,416 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 18:53:27,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 314 flow [2024-10-24 18:53:27,441 INFO L124 PetriNetUnfolderBase]: 16/162 cut-off events. [2024-10-24 18:53:27,441 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 18:53:27,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 162 events. 16/162 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 575 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 137. Up to 5 conditions per place. [2024-10-24 18:53:27,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 143 transitions, 314 flow [2024-10-24 18:53:27,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 143 transitions, 314 flow [2024-10-24 18:53:27,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:53:27,452 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;@3aea43ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:53:27,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 18:53:27,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 18:53:27,455 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 18:53:27,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 18:53:27,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:53:27,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 18:53:27,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 13 more)] === [2024-10-24 18:53:27,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:53:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 725577, now seen corresponding path program 1 times [2024-10-24 18:53:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:53:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940939847] [2024-10-24 18:53:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:53:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:53:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:53:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:53:27,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:53:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940939847] [2024-10-24 18:53:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940939847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:53:27,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:53:27,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:53:27,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141246196] [2024-10-24 18:53:27,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:53:27,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 18:53:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:53:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 18:53:27,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 18:53:27,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 143 [2024-10-24 18:53:27,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 143 transitions, 314 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) [2024-10-24 18:53:27,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:53:27,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 143 [2024-10-24 18:53:27,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand