./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-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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-C-DAC/pthread-demo-datarace-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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:27:52,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:27:52,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:27:52,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:27:52,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:27:52,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:27:52,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:27:52,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:27:52,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:27:52,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:27:52,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:27:52,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:27:52,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:27:52,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:27:52,912 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:27:52,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:27:52,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:27:52,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:27:52,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:27:52,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:27:52,917 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:27:52,918 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:27:52,918 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:27:52,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:27:52,918 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:27:52,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:27:52,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:27:52,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:27:52,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:27:52,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:27:52,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:27:52,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:27:52,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:27:52,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:27:52,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:27:52,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:27:52,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:27:52,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:27:52,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:27:52,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:27:52,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:27:52,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:27:52,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-10-13 12:27:53,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:27:53,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:27:53,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:27:53,251 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:27:53,251 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:27:53,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-13 12:27:54,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:27:55,117 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:27:55,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-13 12:27:55,147 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e547fefcf/d8b995babf1543bf8f6235a30ef83afd/FLAGeb36d6640 [2024-10-13 12:27:55,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e547fefcf/d8b995babf1543bf8f6235a30ef83afd [2024-10-13 12:27:55,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:27:55,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:27:55,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:27:55,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:27:55,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:27:55,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:55" (1/1) ... [2024-10-13 12:27:55,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a121277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:55, skipping insertion in model container [2024-10-13 12:27:55,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:55" (1/1) ... [2024-10-13 12:27:55,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:27:55,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:27:55,889 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:27:55,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:27:56,036 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:27:56,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56 WrapperNode [2024-10-13 12:27:56,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:27:56,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:27:56,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:27:56,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:27:56,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,114 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-10-13 12:27:56,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:27:56,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:27:56,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:27:56,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:27:56,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,153 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]. [2024-10-13 12:27:56,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:27:56,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:27:56,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:27:56,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:27:56,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (1/1) ... [2024-10-13 12:27:56,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:27:56,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:27:56,231 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) [2024-10-13 12:27:56,235 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 [2024-10-13 12:27:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:27:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:27:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:27:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-10-13 12:27:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-10-13 12:27:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:27:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:27:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:27:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:27:56,291 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:27:56,437 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:27:56,439 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:27:56,594 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:27:56,594 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:27:56,776 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:27:56,776 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:27:56,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:56 BoogieIcfgContainer [2024-10-13 12:27:56,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:27:56,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:27:56,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:27:56,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:27:56,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:27:55" (1/3) ... [2024-10-13 12:27:56,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bc22d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:27:56, skipping insertion in model container [2024-10-13 12:27:56,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56" (2/3) ... [2024-10-13 12:27:56,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bc22d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:27:56, skipping insertion in model container [2024-10-13 12:27:56,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:56" (3/3) ... [2024-10-13 12:27:56,791 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-10-13 12:27:56,809 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:27:56,810 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:27:56,810 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:27:56,852 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 12:27:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2024-10-13 12:27:56,926 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-13 12:27:56,928 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:27:56,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-13 12:27:56,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2024-10-13 12:27:56,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2024-10-13 12:27:56,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:27:56,968 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;@7a57bc06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:27:56,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 12:27:56,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:27:56,983 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-10-13 12:27:56,983 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:27:56,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:27:56,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:27:56,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:27:56,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:27:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -54454784, now seen corresponding path program 1 times [2024-10-13 12:27:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:27:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133315833] [2024-10-13 12:27:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:27:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:27:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:27:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:27:57,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:27:57,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133315833] [2024-10-13 12:27:57,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133315833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:27:57,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:27:57,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:27:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067842966] [2024-10-13 12:27:57,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:27:57,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:27:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:27:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:27:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:27:57,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 12:27:57,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:27:57,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:27:57,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 12:27:57,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:27:57,447 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2024-10-13 12:27:57,447 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:27:57,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 135 events. 61/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 400 event pairs, 27 based on Foata normal form. 9/143 useless extension candidates. Maximal degree in co-relation 247. Up to 78 conditions per place. [2024-10-13 12:27:57,451 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2024-10-13 12:27:57,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-10-13 12:27:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:27:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:27:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-13 12:27:57,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-10-13 12:27:57,471 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-10-13 12:27:57,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-10-13 12:27:57,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:27:57,477 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2024-10-13 12:27:57,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2024-10-13 12:27:57,484 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-10-13 12:27:57,485 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2024-10-13 12:27:57,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:27:57,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:27:57,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:27:57,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:27:57,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:27:57,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:27:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1209453456, now seen corresponding path program 1 times [2024-10-13 12:27:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:27:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094353112] [2024-10-13 12:27:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:27:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:27:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:27:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:27:57,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:27:57,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094353112] [2024-10-13 12:27:57,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094353112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:27:57,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:27:57,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:27:57,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444429729] [2024-10-13 12:27:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:27:57,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:27:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:27:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:27:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:27:57,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 12:27:57,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-13 12:27:57,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:27:57,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 12:27:57,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:27:57,798 INFO L124 PetriNetUnfolderBase]: 101/222 cut-off events. [2024-10-13 12:27:57,798 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-13 12:27:57,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 222 events. 101/222 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 780 event pairs, 53 based on Foata normal form. 10/231 useless extension candidates. Maximal degree in co-relation 123. Up to 126 conditions per place. [2024-10-13 12:27:57,803 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-13 12:27:57,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 146 flow [2024-10-13 12:27:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:27:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:27:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-10-13 12:27:57,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-10-13 12:27:57,805 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-10-13 12:27:57,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 146 flow [2024-10-13 12:27:57,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:27:57,808 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2024-10-13 12:27:57,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2024-10-13 12:27:57,810 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2024-10-13 12:27:57,810 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2024-10-13 12:27:57,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-13 12:27:57,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:27:57,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:27:57,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:27:57,812 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:27:57,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:27:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2077585499, now seen corresponding path program 1 times [2024-10-13 12:27:57,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:27:57,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136072293] [2024-10-13 12:27:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:27:57,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:27:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:27:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:27:58,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:27:58,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136072293] [2024-10-13 12:27:58,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136072293] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:27:58,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:27:58,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:27:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922119998] [2024-10-13 12:27:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:27:58,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:27:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:27:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:27:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:27:58,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 12:27:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-13 12:27:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:27:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 12:27:58,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:27:58,141 INFO L124 PetriNetUnfolderBase]: 69/171 cut-off events. [2024-10-13 12:27:58,141 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-13 12:27:58,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 171 events. 69/171 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 530 event pairs, 25 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 134. Up to 80 conditions per place. [2024-10-13 12:27:58,149 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 23 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-13 12:27:58,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 154 flow [2024-10-13 12:27:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:27:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:27:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-13 12:27:58,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-10-13 12:27:58,151 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 46 transitions. [2024-10-13 12:27:58,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 154 flow [2024-10-13 12:27:58,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:27:58,156 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2024-10-13 12:27:58,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-10-13 12:27:58,159 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-10-13 12:27:58,159 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2024-10-13 12:27:58,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-13 12:27:58,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:27:58,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:27:58,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:27:58,160 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:27:58,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:27:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash -834231567, now seen corresponding path program 2 times [2024-10-13 12:27:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:27:58,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825727561] [2024-10-13 12:27:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:27:58,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:27:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:27:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:27:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:27:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825727561] [2024-10-13 12:27:58,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825727561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:27:58,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155155368] [2024-10-13 12:27:58,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:27:58,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:27:58,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:27:58,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:27:58,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:27:58,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:27:58,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:27:58,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:27:58,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:27:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:27:58,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:27:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:27:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155155368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:27:58,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:27:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 12:27:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376764387] [2024-10-13 12:27:58,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:27:58,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:27:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:27:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:27:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:27:58,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:27:58,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-10-13 12:27:58,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:27:58,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:27:58,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:27:58,699 INFO L124 PetriNetUnfolderBase]: 167/379 cut-off events. [2024-10-13 12:27:58,700 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-10-13 12:27:58,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 379 events. 167/379 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1246 event pairs, 24 based on Foata normal form. 30/409 useless extension candidates. Maximal degree in co-relation 297. Up to 86 conditions per place. [2024-10-13 12:27:58,707 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 57 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-10-13 12:27:58,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 66 transitions, 348 flow [2024-10-13 12:27:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:27:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:27:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-13 12:27:58,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-10-13 12:27:58,714 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 6 states and 97 transitions. [2024-10-13 12:27:58,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 66 transitions, 348 flow [2024-10-13 12:27:58,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 66 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:27:58,719 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 108 flow [2024-10-13 12:27:58,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-10-13 12:27:58,721 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-10-13 12:27:58,721 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 108 flow [2024-10-13 12:27:58,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-10-13 12:27:58,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:27:58,722 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:27:58,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:27:58,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:27:58,926 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:27:58,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:27:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -36039780, now seen corresponding path program 3 times [2024-10-13 12:27:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:27:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88561426] [2024-10-13 12:27:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:27:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:27:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:27:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 12:27:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:27:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88561426] [2024-10-13 12:27:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88561426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:27:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295084630] [2024-10-13 12:27:59,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:27:59,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:27:59,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:27:59,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:27:59,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:27:59,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:27:59,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:27:59,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:27:59,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:27:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 12:27:59,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:27:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 12:27:59,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295084630] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:27:59,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:27:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 12:27:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115928570] [2024-10-13 12:27:59,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:27:59,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:27:59,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:27:59,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:27:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:27:59,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:27:59,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-10-13 12:27:59,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:27:59,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:27:59,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:27:59,503 INFO L124 PetriNetUnfolderBase]: 294/695 cut-off events. [2024-10-13 12:27:59,504 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-10-13 12:27:59,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 695 events. 294/695 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2875 event pairs, 51 based on Foata normal form. 57/752 useless extension candidates. Maximal degree in co-relation 1232. Up to 156 conditions per place. [2024-10-13 12:27:59,510 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 67 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-10-13 12:27:59,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 77 transitions, 518 flow [2024-10-13 12:27:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:27:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:27:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-13 12:27:59,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-10-13 12:27:59,512 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 108 flow. Second operand 6 states and 97 transitions. [2024-10-13 12:27:59,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 77 transitions, 518 flow [2024-10-13 12:27:59,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 478 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-13 12:27:59,518 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 140 flow [2024-10-13 12:27:59,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2024-10-13 12:27:59,519 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2024-10-13 12:27:59,519 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 140 flow [2024-10-13 12:27:59,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-10-13 12:27:59,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:27:59,519 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:27:59,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:27:59,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:27:59,721 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:27:59,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:27:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 198452272, now seen corresponding path program 4 times [2024-10-13 12:27:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:27:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251227705] [2024-10-13 12:27:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:27:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:27:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:27:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 12:27:59,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:27:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251227705] [2024-10-13 12:27:59,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251227705] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:27:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222128656] [2024-10-13 12:27:59,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:27:59,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:27:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:27:59,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:27:59,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:28:00,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:28:00,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:28:00,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:28:00,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-13 12:28:00,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:28:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-13 12:28:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222128656] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:28:00,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:28:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-13 12:28:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275576977] [2024-10-13 12:28:00,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:28:00,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:28:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:28:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:28:00,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:00,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 140 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 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) [2024-10-13 12:28:00,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:00,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:00,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:28:01,866 INFO L124 PetriNetUnfolderBase]: 899/2079 cut-off events. [2024-10-13 12:28:01,866 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2024-10-13 12:28:01,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6875 conditions, 2079 events. 899/2079 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10229 event pairs, 8 based on Foata normal form. 209/2288 useless extension candidates. Maximal degree in co-relation 3345. Up to 371 conditions per place. [2024-10-13 12:28:01,890 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 471 selfloop transitions, 138 changer transitions 0/613 dead transitions. [2024-10-13 12:28:01,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 613 transitions, 3748 flow [2024-10-13 12:28:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-13 12:28:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-10-13 12:28:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1058 transitions. [2024-10-13 12:28:01,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5445187853834277 [2024-10-13 12:28:01,898 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 140 flow. Second operand 67 states and 1058 transitions. [2024-10-13 12:28:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 613 transitions, 3748 flow [2024-10-13 12:28:01,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 613 transitions, 3628 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-10-13 12:28:01,918 INFO L231 Difference]: Finished difference. Result has 154 places, 168 transitions, 1566 flow [2024-10-13 12:28:01,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1566, PETRI_PLACES=154, PETRI_TRANSITIONS=168} [2024-10-13 12:28:01,919 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2024-10-13 12:28:01,919 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 168 transitions, 1566 flow [2024-10-13 12:28:01,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 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) [2024-10-13 12:28:01,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:28:01,921 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:28:01,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:28:02,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:02,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:28:02,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:28:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash 518035977, now seen corresponding path program 5 times [2024-10-13 12:28:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:28:02,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186304035] [2024-10-13 12:28:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:28:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:28:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-13 12:28:02,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:28:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186304035] [2024-10-13 12:28:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186304035] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:28:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131888527] [2024-10-13 12:28:02,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:28:02,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:28:02,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:28:02,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:28:02,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-13 12:28:02,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:28:02,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:28:02,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-13 12:28:02,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:28:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-13 12:28:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131888527] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:28:02,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:28:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 12:28:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538438852] [2024-10-13 12:28:02,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:28:02,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:28:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:28:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:28:02,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:02,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 1566 flow. Second operand has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 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) [2024-10-13 12:28:02,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:02,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:02,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:28:04,126 INFO L124 PetriNetUnfolderBase]: 1737/4078 cut-off events. [2024-10-13 12:28:04,127 INFO L125 PetriNetUnfolderBase]: For 95210/95210 co-relation queries the response was YES. [2024-10-13 12:28:04,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18062 conditions, 4078 events. 1737/4078 cut-off events. For 95210/95210 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 22813 event pairs, 142 based on Foata normal form. 301/4371 useless extension candidates. Maximal degree in co-relation 16107. Up to 693 conditions per place. [2024-10-13 12:28:04,180 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 249 selfloop transitions, 144 changer transitions 0/403 dead transitions. [2024-10-13 12:28:04,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 403 transitions, 4822 flow [2024-10-13 12:28:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:28:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:28:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-10-13 12:28:04,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.583743842364532 [2024-10-13 12:28:04,184 INFO L175 Difference]: Start difference. First operand has 154 places, 168 transitions, 1566 flow. Second operand 14 states and 237 transitions. [2024-10-13 12:28:04,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 403 transitions, 4822 flow [2024-10-13 12:28:04,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 403 transitions, 4678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:28:04,470 INFO L231 Difference]: Finished difference. Result has 169 places, 235 transitions, 2480 flow [2024-10-13 12:28:04,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2480, PETRI_PLACES=169, PETRI_TRANSITIONS=235} [2024-10-13 12:28:04,472 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 142 predicate places. [2024-10-13 12:28:04,472 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 235 transitions, 2480 flow [2024-10-13 12:28:04,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 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) [2024-10-13 12:28:04,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:28:04,473 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:28:04,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 12:28:04,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:04,674 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:28:04,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:28:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2096148932, now seen corresponding path program 6 times [2024-10-13 12:28:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:28:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861463683] [2024-10-13 12:28:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:28:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:28:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-13 12:28:05,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:28:05,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861463683] [2024-10-13 12:28:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861463683] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:28:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219923481] [2024-10-13 12:28:05,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:28:05,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:05,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:28:05,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:28:05,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:28:05,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-13 12:28:05,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:28:05,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:28:05,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-13 12:28:05,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:28:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-13 12:28:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219923481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:28:05,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:28:05,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-10-13 12:28:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763376218] [2024-10-13 12:28:05,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:28:05,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 12:28:05,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 12:28:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-13 12:28:05,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:05,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 235 transitions, 2480 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-10-13 12:28:05,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:05,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:05,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:28:08,549 INFO L124 PetriNetUnfolderBase]: 3233/7598 cut-off events. [2024-10-13 12:28:08,549 INFO L125 PetriNetUnfolderBase]: For 455403/455403 co-relation queries the response was YES. [2024-10-13 12:28:08,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36150 conditions, 7598 events. 3233/7598 cut-off events. For 455403/455403 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 46413 event pairs, 122 based on Foata normal form. 510/8108 useless extension candidates. Maximal degree in co-relation 32294. Up to 1339 conditions per place. [2024-10-13 12:28:08,661 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 623 selfloop transitions, 132 changer transitions 0/760 dead transitions. [2024-10-13 12:28:08,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 760 transitions, 9564 flow [2024-10-13 12:28:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:28:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:28:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 376 transitions. [2024-10-13 12:28:08,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5893416927899686 [2024-10-13 12:28:08,665 INFO L175 Difference]: Start difference. First operand has 169 places, 235 transitions, 2480 flow. Second operand 22 states and 376 transitions. [2024-10-13 12:28:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 760 transitions, 9564 flow [2024-10-13 12:28:08,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 760 transitions, 9254 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 12:28:09,001 INFO L231 Difference]: Finished difference. Result has 196 places, 301 transitions, 3470 flow [2024-10-13 12:28:09,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3470, PETRI_PLACES=196, PETRI_TRANSITIONS=301} [2024-10-13 12:28:09,003 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 169 predicate places. [2024-10-13 12:28:09,003 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 301 transitions, 3470 flow [2024-10-13 12:28:09,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-10-13 12:28:09,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:28:09,004 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:28:09,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 12:28:09,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:09,205 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:28:09,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:28:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 896442158, now seen corresponding path program 7 times [2024-10-13 12:28:09,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:28:09,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565401757] [2024-10-13 12:28:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:28:09,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:28:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-13 12:28:09,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:28:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565401757] [2024-10-13 12:28:09,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565401757] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:28:09,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690340404] [2024-10-13 12:28:09,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:28:09,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:09,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:28:09,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:28:09,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:28:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:10,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:28:10,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-13 12:28:10,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:28:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-13 12:28:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690340404] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:28:10,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:28:10,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-13 12:28:10,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378820511] [2024-10-13 12:28:10,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:28:10,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 12:28:10,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 12:28:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-13 12:28:10,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:10,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 301 transitions, 3470 flow. Second operand has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 23 states have internal predecessors, (254), 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) [2024-10-13 12:28:10,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:10,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:10,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:28:14,051 INFO L124 PetriNetUnfolderBase]: 5485/12756 cut-off events. [2024-10-13 12:28:14,051 INFO L125 PetriNetUnfolderBase]: For 340736/340746 co-relation queries the response was YES. [2024-10-13 12:28:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61911 conditions, 12756 events. 5485/12756 cut-off events. For 340736/340746 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82634 event pairs, 232 based on Foata normal form. 674/13330 useless extension candidates. Maximal degree in co-relation 57477. Up to 2163 conditions per place. [2024-10-13 12:28:14,291 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 611 selfloop transitions, 232 changer transitions 0/859 dead transitions. [2024-10-13 12:28:14,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 859 transitions, 12612 flow [2024-10-13 12:28:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:28:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:28:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-10-13 12:28:14,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-10-13 12:28:14,296 INFO L175 Difference]: Start difference. First operand has 196 places, 301 transitions, 3470 flow. Second operand 22 states and 374 transitions. [2024-10-13 12:28:14,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 859 transitions, 12612 flow [2024-10-13 12:28:14,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 859 transitions, 12234 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-13 12:28:14,965 INFO L231 Difference]: Finished difference. Result has 217 places, 390 transitions, 5110 flow [2024-10-13 12:28:14,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5110, PETRI_PLACES=217, PETRI_TRANSITIONS=390} [2024-10-13 12:28:14,966 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 190 predicate places. [2024-10-13 12:28:14,966 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 390 transitions, 5110 flow [2024-10-13 12:28:14,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 23 states have internal predecessors, (254), 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) [2024-10-13 12:28:14,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:28:14,967 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:28:14,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:28:15,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:15,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:28:15,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:28:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1070401404, now seen corresponding path program 8 times [2024-10-13 12:28:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:28:15,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849896794] [2024-10-13 12:28:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:28:15,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:28:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:28:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:28:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849896794] [2024-10-13 12:28:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849896794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:28:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142131727] [2024-10-13 12:28:18,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:28:18,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:18,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:28:18,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:28:18,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 12:28:18,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:28:18,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:28:18,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-10-13 12:28:18,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:28:19,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:28:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:28:19,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142131727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:28:19,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:28:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-10-13 12:28:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242378802] [2024-10-13 12:28:19,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:28:19,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-13 12:28:19,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-13 12:28:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-10-13 12:28:19,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:19,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 390 transitions, 5110 flow. Second operand has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 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) [2024-10-13 12:28:19,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:19,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:19,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:28:34,170 INFO L124 PetriNetUnfolderBase]: 9717/24493 cut-off events. [2024-10-13 12:28:34,170 INFO L125 PetriNetUnfolderBase]: For 1800626/1800626 co-relation queries the response was YES. [2024-10-13 12:28:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189669 conditions, 24493 events. 9717/24493 cut-off events. For 1800626/1800626 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 193180 event pairs, 1193 based on Foata normal form. 1/24493 useless extension candidates. Maximal degree in co-relation 146817. Up to 4573 conditions per place. [2024-10-13 12:28:35,004 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 2605 selfloop transitions, 83 changer transitions 2/2710 dead transitions. [2024-10-13 12:28:35,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 2710 transitions, 41131 flow [2024-10-13 12:28:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-13 12:28:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-13 12:28:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 732 transitions. [2024-10-13 12:28:35,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2024-10-13 12:28:35,009 INFO L175 Difference]: Start difference. First operand has 217 places, 390 transitions, 5110 flow. Second operand 44 states and 732 transitions. [2024-10-13 12:28:35,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 2710 transitions, 41131 flow [2024-10-13 12:28:44,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 2710 transitions, 39525 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-13 12:28:44,352 INFO L231 Difference]: Finished difference. Result has 251 places, 472 transitions, 5210 flow [2024-10-13 12:28:44,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5210, PETRI_PLACES=251, PETRI_TRANSITIONS=472} [2024-10-13 12:28:44,354 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 224 predicate places. [2024-10-13 12:28:44,354 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 472 transitions, 5210 flow [2024-10-13 12:28:44,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 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) [2024-10-13 12:28:44,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:28:44,355 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:28:44,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 12:28:44,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:44,556 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:28:44,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:28:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash -393475920, now seen corresponding path program 9 times [2024-10-13 12:28:44,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:28:44,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848781518] [2024-10-13 12:28:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:28:44,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:28:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 135 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-10-13 12:28:45,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:28:45,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848781518] [2024-10-13 12:28:45,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848781518] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:28:45,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435684973] [2024-10-13 12:28:45,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:28:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:28:45,450 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:28:45,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 12:28:46,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-10-13 12:28:46,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:28:46,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 12:28:46,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-10-13 12:28:46,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:28:46,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435684973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:28:46,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 12:28:46,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-10-13 12:28:46,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577852180] [2024-10-13 12:28:46,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:28:46,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 12:28:46,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:46,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 12:28:46,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:28:46,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:46,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 472 transitions, 5210 flow. Second operand has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 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) [2024-10-13 12:28:46,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:46,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:46,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:28:52,974 INFO L124 PetriNetUnfolderBase]: 9149/21024 cut-off events. [2024-10-13 12:28:52,974 INFO L125 PetriNetUnfolderBase]: For 781954/781954 co-relation queries the response was YES. [2024-10-13 12:28:53,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138055 conditions, 21024 events. 9149/21024 cut-off events. For 781954/781954 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 158386 event pairs, 83 based on Foata normal form. 89/21112 useless extension candidates. Maximal degree in co-relation 137960. Up to 4121 conditions per place. [2024-10-13 12:28:53,488 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 2218 selfloop transitions, 126 changer transitions 0/2350 dead transitions. [2024-10-13 12:28:53,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 2350 transitions, 23102 flow [2024-10-13 12:28:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:28:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:28:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2024-10-13 12:28:53,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5667166416791605 [2024-10-13 12:28:53,491 INFO L175 Difference]: Start difference. First operand has 251 places, 472 transitions, 5210 flow. Second operand 23 states and 378 transitions. [2024-10-13 12:28:53,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 2350 transitions, 23102 flow [2024-10-13 12:28:56,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 2350 transitions, 23088 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 12:28:56,153 INFO L231 Difference]: Finished difference. Result has 270 places, 466 transitions, 5364 flow [2024-10-13 12:28:56,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5364, PETRI_PLACES=270, PETRI_TRANSITIONS=466} [2024-10-13 12:28:56,154 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 243 predicate places. [2024-10-13 12:28:56,154 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 466 transitions, 5364 flow [2024-10-13 12:28:56,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 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) [2024-10-13 12:28:56,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:28:56,155 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:28:56,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 12:28:56,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 12:28:56,355 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:28:56,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:28:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1879127983, now seen corresponding path program 10 times [2024-10-13 12:28:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:28:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284251366] [2024-10-13 12:28:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:28:56,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:28:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:28:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-10-13 12:28:57,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:28:57,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284251366] [2024-10-13 12:28:57,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284251366] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:28:57,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425117469] [2024-10-13 12:28:57,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:28:57,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:28:57,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:28:57,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:28:57,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 12:28:57,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:28:57,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:28:57,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 12:28:57,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:28:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-10-13 12:28:57,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:28:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425117469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:28:57,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 12:28:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-10-13 12:28:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645294425] [2024-10-13 12:28:57,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:28:57,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 12:28:57,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:28:57,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 12:28:57,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:28:57,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 12:28:57,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 466 transitions, 5364 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 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) [2024-10-13 12:28:57,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:28:57,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 12:28:57,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:01,437 INFO L124 PetriNetUnfolderBase]: 5380/12636 cut-off events. [2024-10-13 12:29:01,437 INFO L125 PetriNetUnfolderBase]: For 238365/238375 co-relation queries the response was YES. [2024-10-13 12:29:01,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67557 conditions, 12636 events. 5380/12636 cut-off events. For 238365/238375 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 84051 event pairs, 157 based on Foata normal form. 93/12632 useless extension candidates. Maximal degree in co-relation 67026. Up to 2163 conditions per place. [2024-10-13 12:29:01,529 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1711/1711 dead transitions. [2024-10-13 12:29:01,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1711 transitions, 18975 flow [2024-10-13 12:29:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:29:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:29:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 376 transitions. [2024-10-13 12:29:01,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5637181409295352 [2024-10-13 12:29:01,531 INFO L175 Difference]: Start difference. First operand has 270 places, 466 transitions, 5364 flow. Second operand 23 states and 376 transitions. [2024-10-13 12:29:01,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1711 transitions, 18975 flow [2024-10-13 12:29:02,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1711 transitions, 18047 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-10-13 12:29:02,299 INFO L231 Difference]: Finished difference. Result has 264 places, 0 transitions, 0 flow [2024-10-13 12:29:02,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=264, PETRI_TRANSITIONS=0} [2024-10-13 12:29:02,300 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 237 predicate places. [2024-10-13 12:29:02,300 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 0 transitions, 0 flow [2024-10-13 12:29:02,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 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) [2024-10-13 12:29:02,304 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2024-10-13 12:29:02,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-10-13 12:29:02,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-13 12:29:02,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:02,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:29:02,507 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-10-13 12:29:02,510 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:29:02,510 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:29:02,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:29:02 BasicIcfg [2024-10-13 12:29:02,516 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:29:02,516 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:29:02,516 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:29:02,516 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:29:02,517 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:27:56" (3/4) ... [2024-10-13 12:29:02,519 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 12:29:02,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2024-10-13 12:29:02,528 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-10-13 12:29:02,528 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-13 12:29:02,528 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-13 12:29:02,528 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 12:29:02,630 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 12:29:02,631 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 12:29:02,631 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:29:02,632 INFO L158 Benchmark]: Toolchain (without parser) took 67458.96ms. Allocated memory was 161.5MB in the beginning and 8.7GB in the end (delta: 8.5GB). Free memory was 101.7MB in the beginning and 7.1GB in the end (delta: -7.0GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-10-13 12:29:02,632 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:29:02,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 860.61ms. Allocated memory is still 161.5MB. Free memory was 101.3MB in the beginning and 106.4MB in the end (delta: -5.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-10-13 12:29:02,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.32ms. Allocated memory is still 161.5MB. Free memory was 106.4MB in the beginning and 103.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:29:02,633 INFO L158 Benchmark]: Boogie Preprocessor took 72.20ms. Allocated memory is still 161.5MB. Free memory was 103.9MB in the beginning and 101.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:29:02,633 INFO L158 Benchmark]: RCFGBuilder took 588.90ms. Allocated memory is still 161.5MB. Free memory was 101.8MB in the beginning and 131.4MB in the end (delta: -29.6MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2024-10-13 12:29:02,633 INFO L158 Benchmark]: TraceAbstraction took 65733.42ms. Allocated memory was 161.5MB in the beginning and 8.7GB in the end (delta: 8.5GB). Free memory was 130.6MB in the beginning and 7.1GB in the end (delta: -7.0GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-10-13 12:29:02,634 INFO L158 Benchmark]: Witness Printer took 114.68ms. Allocated memory is still 8.7GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 4.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 12:29:02,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 860.61ms. Allocated memory is still 161.5MB. Free memory was 101.3MB in the beginning and 106.4MB in the end (delta: -5.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.32ms. Allocated memory is still 161.5MB. Free memory was 106.4MB in the beginning and 103.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.20ms. Allocated memory is still 161.5MB. Free memory was 103.9MB in the beginning and 101.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 588.90ms. Allocated memory is still 161.5MB. Free memory was 101.8MB in the beginning and 131.4MB in the end (delta: -29.6MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * TraceAbstraction took 65733.42ms. Allocated memory was 161.5MB in the beginning and 8.7GB in the end (delta: 8.5GB). Free memory was 130.6MB in the beginning and 7.1GB in the end (delta: -7.0GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 114.68ms. Allocated memory is still 8.7GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 4.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 65.6s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 51.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1821 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1806 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22769 IncrementalHoareTripleChecker+Invalid, 22822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 0 mSDtfsCounter, 22769 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2020 GetRequests, 1790 SyntacticMatches, 9 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5364occurred in iteration=11, InterpolantAutomatonStates: 236, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 2306 NumberOfCodeBlocks, 2278 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 2975 ConstructedInterpolants, 0 QuantifiedInterpolants, 7448 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4711 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 28 InterpolantComputations, 5 PerfectInterpolantSequences, 12758/20839 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 12:29:02,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE