./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 389f5b7d6579b5ac06564f3c82f3f69fea502868b761df6187d49f96e1a317cd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:28:44,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:28:44,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:28:44,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:28:44,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:28:44,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:28:44,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:28:44,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:28:44,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:28:44,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:28:44,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:28:44,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:28:44,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:28:44,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:28:44,205 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:28:44,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:28:44,205 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:28:44,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:28:44,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:28:44,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:28:44,207 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:28:44,207 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:28:44,208 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:28:44,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:28:44,208 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:28:44,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:28:44,209 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:28:44,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:28:44,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:28:44,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:28:44,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:28:44,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:28:44,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:28:44,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:28:44,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:28:44,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:28:44,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:28:44,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:28:44,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:28:44,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:28:44,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:28:44,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:28:44,215 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f5b7d6579b5ac06564f3c82f3f69fea502868b761df6187d49f96e1a317cd [2024-10-11 19:28:44,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:28:44,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:28:44,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:28:44,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:28:44,487 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:28:44,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i [2024-10-11 19:28:45,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:28:46,177 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:28:46,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs-pthread.i [2024-10-11 19:28:46,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/79e783222/4d3fe476cbf24d6d9d17b087c0112327/FLAG901fe4b79 [2024-10-11 19:28:46,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/79e783222/4d3fe476cbf24d6d9d17b087c0112327 [2024-10-11 19:28:46,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:28:46,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:28:46,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:28:46,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:28:46,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:28:46,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100c642c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46, skipping insertion in model container [2024-10-11 19:28:46,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:28:46,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:28:46,700 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:28:46,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:28:46,798 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:28:46,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46 WrapperNode [2024-10-11 19:28:46,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:28:46,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:28:46,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:28:46,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:28:46,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,852 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-10-11 19:28:46,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:28:46,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:28:46,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:28:46,854 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:28:46,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,886 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]. [2024-10-11 19:28:46,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:28:46,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:28:46,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:28:46,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:28:46,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (1/1) ... [2024-10-11 19:28:46,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:28:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:28:46,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:28:46,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:28:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-11 19:28:47,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-11 19:28:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 19:28:47,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 19:28:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:28:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:28:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:28:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:28:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:28:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:28:47,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:28:47,016 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:28:47,167 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:28:47,169 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:28:47,327 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:28:47,327 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:28:47,448 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:28:47,449 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:28:47,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:28:47 BoogieIcfgContainer [2024-10-11 19:28:47,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:28:47,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:28:47,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:28:47,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:28:47,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:28:46" (1/3) ... [2024-10-11 19:28:47,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b19e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:28:47, skipping insertion in model container [2024-10-11 19:28:47,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:28:46" (2/3) ... [2024-10-11 19:28:47,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b19e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:28:47, skipping insertion in model container [2024-10-11 19:28:47,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:28:47" (3/3) ... [2024-10-11 19:28:47,462 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs-pthread.i [2024-10-11 19:28:47,479 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:28:47,480 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:28:47,480 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:28:47,522 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:28:47,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 70 flow [2024-10-11 19:28:47,584 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-11 19:28:47,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:47,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 4/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-10-11 19:28:47,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 70 flow [2024-10-11 19:28:47,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 67 flow [2024-10-11 19:28:47,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:28:47,614 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;@6a8ca73f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:28:47,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 19:28:47,625 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:28:47,625 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-11 19:28:47,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:47,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:47,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:28:47,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 19:28:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 206163919, now seen corresponding path program 1 times [2024-10-11 19:28:47,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173765539] [2024-10-11 19:28:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:47,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173765539] [2024-10-11 19:28:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173765539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:47,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:47,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:47,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097975648] [2024-10-11 19:28:47,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:47,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:28:47,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:47,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:28:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:28:47,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-10-11 19:28:47,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 67 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:47,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:47,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-10-11 19:28:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:47,972 INFO L124 PetriNetUnfolderBase]: 79/166 cut-off events. [2024-10-11 19:28:47,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:47,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 166 events. 79/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 720 event pairs, 66 based on Foata normal form. 44/202 useless extension candidates. Maximal degree in co-relation 305. Up to 136 conditions per place. [2024-10-11 19:28:47,982 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 12 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-10-11 19:28:47,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 75 flow [2024-10-11 19:28:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:28:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:28:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2024-10-11 19:28:47,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-10-11 19:28:47,997 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 67 flow. Second operand 2 states and 41 transitions. [2024-10-11 19:28:47,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 75 flow [2024-10-11 19:28:48,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:28:48,002 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2024-10-11 19:28:48,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-10-11 19:28:48,009 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2024-10-11 19:28:48,009 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2024-10-11 19:28:48,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:48,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:48,011 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:48,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:28:48,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 19:28:48,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 26218542, now seen corresponding path program 1 times [2024-10-11 19:28:48,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:48,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481842075] [2024-10-11 19:28:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:48,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:48,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:28:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:48,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:28:48,093 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:28:48,097 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-11 19:28:48,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-11 19:28:48,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-11 19:28:48,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-10-11 19:28:48,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-11 19:28:48,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:28:48,102 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:28:48,106 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:28:48,106 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 19:28:48,145 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:28:48,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 126 flow [2024-10-11 19:28:48,164 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-11 19:28:48,165 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:28:48,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-10-11 19:28:48,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 126 flow [2024-10-11 19:28:48,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 87 flow [2024-10-11 19:28:48,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:28:48,174 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;@6a8ca73f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:28:48,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 19:28:48,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:28:48,181 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-11 19:28:48,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:48,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:48,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:28:48,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:28:48,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash 257367695, now seen corresponding path program 1 times [2024-10-11 19:28:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998317414] [2024-10-11 19:28:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998317414] [2024-10-11 19:28:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998317414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:48,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:48,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810379260] [2024-10-11 19:28:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:48,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:28:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:28:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:28:48,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-11 19:28:48,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:48,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:48,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-11 19:28:48,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:48,495 INFO L124 PetriNetUnfolderBase]: 559/918 cut-off events. [2024-10-11 19:28:48,495 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-11 19:28:48,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 918 events. 559/918 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4736 event pairs, 450 based on Foata normal form. 188/1090 useless extension candidates. Maximal degree in co-relation 1769. Up to 800 conditions per place. [2024-10-11 19:28:48,516 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 16 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-10-11 19:28:48,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 101 flow [2024-10-11 19:28:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:28:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:28:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2024-10-11 19:28:48,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-10-11 19:28:48,518 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 87 flow. Second operand 2 states and 64 transitions. [2024-10-11 19:28:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 101 flow [2024-10-11 19:28:48,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:28:48,520 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 68 flow [2024-10-11 19:28:48,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-10-11 19:28:48,522 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-10-11 19:28:48,522 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 68 flow [2024-10-11 19:28:48,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:48,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:48,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:48,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:28:48,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:28:48,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -823457228, now seen corresponding path program 1 times [2024-10-11 19:28:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:48,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489303492] [2024-10-11 19:28:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:48,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:48,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489303492] [2024-10-11 19:28:48,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489303492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:48,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:48,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:48,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375876597] [2024-10-11 19:28:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:48,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:28:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:28:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:28:48,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-11 19:28:48,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:48,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:48,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-11 19:28:48,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:48,855 INFO L124 PetriNetUnfolderBase]: 620/1066 cut-off events. [2024-10-11 19:28:48,856 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-11 19:28:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1066 events. 620/1066 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5945 event pairs, 139 based on Foata normal form. 20/1077 useless extension candidates. Maximal degree in co-relation 2027. Up to 760 conditions per place. [2024-10-11 19:28:48,866 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 22 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-10-11 19:28:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 141 flow [2024-10-11 19:28:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:28:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:28:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-11 19:28:48,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2024-10-11 19:28:48,869 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 3 states and 89 transitions. [2024-10-11 19:28:48,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 141 flow [2024-10-11 19:28:48,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:28:48,873 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 87 flow [2024-10-11 19:28:48,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-10-11 19:28:48,875 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-10-11 19:28:48,875 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 87 flow [2024-10-11 19:28:48,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:48,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:48,876 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:48,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:28:48,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:28:48,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash -212865088, now seen corresponding path program 1 times [2024-10-11 19:28:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368968473] [2024-10-11 19:28:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:48,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:48,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:28:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:48,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:28:48,937 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:28:48,937 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-11 19:28:48,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-11 19:28:48,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-11 19:28:48,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-10-11 19:28:48,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-11 19:28:48,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-11 19:28:48,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:28:48,939 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 19:28:48,940 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:28:48,940 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 19:28:48,973 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:28:48,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 186 flow [2024-10-11 19:28:48,985 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-10-11 19:28:48,986 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 19:28:48,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 58 events. 6/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2024-10-11 19:28:48,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 186 flow [2024-10-11 19:28:48,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 44 transitions, 109 flow [2024-10-11 19:28:48,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:28:48,991 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;@6a8ca73f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:28:48,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 19:28:48,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:28:48,995 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-11 19:28:48,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:48,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:48,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:28:48,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:28:48,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:48,998 INFO L85 PathProgramCache]: Analyzing trace with hash 329566181, now seen corresponding path program 1 times [2024-10-11 19:28:48,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:48,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55360504] [2024-10-11 19:28:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:49,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:49,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55360504] [2024-10-11 19:28:49,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55360504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:49,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940394500] [2024-10-11 19:28:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:49,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:28:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:28:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:28:49,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-10-11 19:28:49,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:49,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:49,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-10-11 19:28:49,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:49,580 INFO L124 PetriNetUnfolderBase]: 3247/4710 cut-off events. [2024-10-11 19:28:49,581 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-10-11 19:28:49,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 4710 events. 3247/4710 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26567 event pairs, 2562 based on Foata normal form. 763/5404 useless extension candidates. Maximal degree in co-relation 9241. Up to 4224 conditions per place. [2024-10-11 19:28:49,624 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-10-11 19:28:49,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 129 flow [2024-10-11 19:28:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:28:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:28:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-10-11 19:28:49,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-10-11 19:28:49,629 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 109 flow. Second operand 2 states and 87 transitions. [2024-10-11 19:28:49,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 129 flow [2024-10-11 19:28:49,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:28:49,635 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 86 flow [2024-10-11 19:28:49,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-10-11 19:28:49,636 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2024-10-11 19:28:49,636 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 86 flow [2024-10-11 19:28:49,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:49,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:49,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:49,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:28:49,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:28:49,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:49,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2086411230, now seen corresponding path program 1 times [2024-10-11 19:28:49,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:49,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969289131] [2024-10-11 19:28:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:49,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969289131] [2024-10-11 19:28:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969289131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042672591] [2024-10-11 19:28:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:49,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:28:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:49,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:28:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:28:49,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-10-11 19:28:49,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:49,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:49,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-10-11 19:28:49,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:50,288 INFO L124 PetriNetUnfolderBase]: 3515/5257 cut-off events. [2024-10-11 19:28:50,289 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-10-11 19:28:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5257 events. 3515/5257 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 31416 event pairs, 724 based on Foata normal form. 44/5273 useless extension candidates. Maximal degree in co-relation 10157. Up to 4267 conditions per place. [2024-10-11 19:28:50,331 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 28 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-11 19:28:50,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 184 flow [2024-10-11 19:28:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:28:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:28:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-10-11 19:28:50,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-10-11 19:28:50,335 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 86 flow. Second operand 3 states and 123 transitions. [2024-10-11 19:28:50,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 184 flow [2024-10-11 19:28:50,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:28:50,338 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 112 flow [2024-10-11 19:28:50,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-10-11 19:28:50,340 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-10-11 19:28:50,341 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 112 flow [2024-10-11 19:28:50,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:50,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:50,342 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:50,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:28:50,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:28:50,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1401397513, now seen corresponding path program 1 times [2024-10-11 19:28:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565750285] [2024-10-11 19:28:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:50,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:28:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:50,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:28:50,380 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:28:50,382 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-11 19:28:50,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-10-11 19:28:50,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-10-11 19:28:50,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-10-11 19:28:50,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-10-11 19:28:50,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-11 19:28:50,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-11 19:28:50,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:28:50,385 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 19:28:50,385 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:28:50,386 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 19:28:50,422 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:28:50,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 250 flow [2024-10-11 19:28:50,432 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2024-10-11 19:28:50,433 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:28:50,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 70 events. 7/70 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 203 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 86. Up to 5 conditions per place. [2024-10-11 19:28:50,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 97 transitions, 250 flow [2024-10-11 19:28:50,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 133 flow [2024-10-11 19:28:50,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:28:50,436 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;@6a8ca73f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:28:50,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-11 19:28:50,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:28:50,438 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-11 19:28:50,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:50,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:50,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:28:50,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-11 19:28:50,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash 422759377, now seen corresponding path program 1 times [2024-10-11 19:28:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8242932] [2024-10-11 19:28:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:50,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8242932] [2024-10-11 19:28:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8242932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:50,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810416556] [2024-10-11 19:28:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:50,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:28:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:28:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:28:50,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-10-11 19:28:50,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 133 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 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) [2024-10-11 19:28:50,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:50,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-10-11 19:28:50,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:52,788 INFO L124 PetriNetUnfolderBase]: 17071/22950 cut-off events. [2024-10-11 19:28:52,789 INFO L125 PetriNetUnfolderBase]: For 4208/4208 co-relation queries the response was YES. [2024-10-11 19:28:52,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45542 conditions, 22950 events. 17071/22950 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 134440 event pairs, 13314 based on Foata normal form. 3067/25760 useless extension candidates. Maximal degree in co-relation 45529. Up to 20992 conditions per place. [2024-10-11 19:28:53,008 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 24 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-10-11 19:28:53,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 159 flow [2024-10-11 19:28:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:28:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:28:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2024-10-11 19:28:53,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5670103092783505 [2024-10-11 19:28:53,014 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 133 flow. Second operand 2 states and 110 transitions. [2024-10-11 19:28:53,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 159 flow [2024-10-11 19:28:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 152 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 19:28:53,026 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 104 flow [2024-10-11 19:28:53,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-10-11 19:28:53,027 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2024-10-11 19:28:53,027 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 104 flow [2024-10-11 19:28:53,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 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) [2024-10-11 19:28:53,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:53,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:53,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:28:53,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-11 19:28:53,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2065459860, now seen corresponding path program 1 times [2024-10-11 19:28:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:53,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66809494] [2024-10-11 19:28:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:53,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66809494] [2024-10-11 19:28:53,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66809494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:53,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:53,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:53,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541102130] [2024-10-11 19:28:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:53,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:28:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:28:53,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:28:53,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-10-11 19:28:53,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:53,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:53,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-10-11 19:28:53,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:55,059 INFO L124 PetriNetUnfolderBase]: 17930/24628 cut-off events. [2024-10-11 19:28:55,060 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-10-11 19:28:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47982 conditions, 24628 events. 17930/24628 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 151414 event pairs, 3961 based on Foata normal form. 92/24656 useless extension candidates. Maximal degree in co-relation 47975. Up to 21382 conditions per place. [2024-10-11 19:28:55,273 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 34 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-11 19:28:55,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 227 flow [2024-10-11 19:28:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:28:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:28:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-10-11 19:28:55,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395189003436426 [2024-10-11 19:28:55,275 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 104 flow. Second operand 3 states and 157 transitions. [2024-10-11 19:28:55,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 227 flow [2024-10-11 19:28:55,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:28:55,279 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 137 flow [2024-10-11 19:28:55,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-11 19:28:55,280 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2024-10-11 19:28:55,280 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 137 flow [2024-10-11 19:28:55,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:55,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:55,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:55,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 19:28:55,281 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-11 19:28:55,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash 862871265, now seen corresponding path program 1 times [2024-10-11 19:28:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048942822] [2024-10-11 19:28:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:55,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:55,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048942822] [2024-10-11 19:28:55,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048942822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:55,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:55,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:28:55,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649789126] [2024-10-11 19:28:55,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:55,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:28:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:55,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:28:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:28:55,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-10-11 19:28:55,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:55,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:55,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-10-11 19:28:55,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:55,696 INFO L124 PetriNetUnfolderBase]: 1187/2607 cut-off events. [2024-10-11 19:28:55,696 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-10-11 19:28:55,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2607 events. 1187/2607 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17893 event pairs, 260 based on Foata normal form. 2076/4645 useless extension candidates. Maximal degree in co-relation 5677. Up to 1627 conditions per place. [2024-10-11 19:28:55,722 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 25 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-10-11 19:28:55,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 239 flow [2024-10-11 19:28:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:28:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:28:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-10-11 19:28:55,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5257731958762887 [2024-10-11 19:28:55,725 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 137 flow. Second operand 3 states and 153 transitions. [2024-10-11 19:28:55,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 239 flow [2024-10-11 19:28:55,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:28:55,729 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 152 flow [2024-10-11 19:28:55,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-11 19:28:55,732 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-10-11 19:28:55,732 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 152 flow [2024-10-11 19:28:55,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:55,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:55,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:55,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 19:28:55,733 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-11 19:28:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1203977249, now seen corresponding path program 1 times [2024-10-11 19:28:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596070710] [2024-10-11 19:28:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:55,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:55,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596070710] [2024-10-11 19:28:55,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596070710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:55,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:55,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:28:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391194241] [2024-10-11 19:28:55,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:55,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:28:55,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:55,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:28:55,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:28:55,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-10-11 19:28:55,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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) [2024-10-11 19:28:55,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:55,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-10-11 19:28:55,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:28:56,250 INFO L124 PetriNetUnfolderBase]: 1731/3694 cut-off events. [2024-10-11 19:28:56,250 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-10-11 19:28:56,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9331 conditions, 3694 events. 1731/3694 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26957 event pairs, 86 based on Foata normal form. 30/3714 useless extension candidates. Maximal degree in co-relation 9322. Up to 2243 conditions per place. [2024-10-11 19:28:56,280 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 49 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-10-11 19:28:56,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 398 flow [2024-10-11 19:28:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:28:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:28:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-10-11 19:28:56,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5541237113402062 [2024-10-11 19:28:56,282 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 152 flow. Second operand 4 states and 215 transitions. [2024-10-11 19:28:56,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 398 flow [2024-10-11 19:28:56,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:28:56,288 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 194 flow [2024-10-11 19:28:56,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-10-11 19:28:56,289 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-10-11 19:28:56,289 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 194 flow [2024-10-11 19:28:56,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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) [2024-10-11 19:28:56,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:56,290 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:28:56,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 19:28:56,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-11 19:28:56,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash 360081993, now seen corresponding path program 1 times [2024-10-11 19:28:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:56,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379396733] [2024-10-11 19:28:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:56,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:28:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:28:56,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:28:56,325 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:28:56,325 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-11 19:28:56,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-10-11 19:28:56,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-10-11 19:28:56,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-10-11 19:28:56,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-10-11 19:28:56,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-10-11 19:28:56,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-10-11 19:28:56,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-10-11 19:28:56,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 19:28:56,329 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 19:28:56,330 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:28:56,330 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 19:28:56,378 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:28:56,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 318 flow [2024-10-11 19:28:56,390 INFO L124 PetriNetUnfolderBase]: 8/82 cut-off events. [2024-10-11 19:28:56,390 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 19:28:56,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 82 events. 8/82 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 236 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 104. Up to 6 conditions per place. [2024-10-11 19:28:56,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 119 transitions, 318 flow [2024-10-11 19:28:56,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 58 transitions, 159 flow [2024-10-11 19:28:56,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:28:56,394 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;@6a8ca73f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:28:56,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-11 19:28:56,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:28:56,397 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-11 19:28:56,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:28:56,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:28:56,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:28:56,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:28:56,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:28:56,398 INFO L85 PathProgramCache]: Analyzing trace with hash 536947283, now seen corresponding path program 1 times [2024-10-11 19:28:56,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:28:56,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131077972] [2024-10-11 19:28:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:28:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:28:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:28:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:28:56,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:28:56,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131077972] [2024-10-11 19:28:56,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131077972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:28:56,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:28:56,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:28:56,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383132970] [2024-10-11 19:28:56,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:28:56,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:28:56,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:28:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:28:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:28:56,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-10-11 19:28:56,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 159 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:28:56,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:28:56,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-10-11 19:28:56,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:04,344 INFO L124 PetriNetUnfolderBase]: 84655/108198 cut-off events. [2024-10-11 19:29:04,345 INFO L125 PetriNetUnfolderBase]: For 26992/26992 co-relation queries the response was YES. [2024-10-11 19:29:04,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216295 conditions, 108198 events. 84655/108198 cut-off events. For 26992/26992 co-relation queries the response was YES. Maximal size of possible extension queue 3774. Compared 644634 event pairs, 65538 based on Foata normal form. 12284/119458 useless extension candidates. Maximal degree in co-relation 216281. Up to 100352 conditions per place. [2024-10-11 19:29:05,462 INFO L140 encePairwiseOnDemand]: 110/119 looper letters, 28 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-10-11 19:29:05,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 191 flow [2024-10-11 19:29:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:29:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:29:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 133 transitions. [2024-10-11 19:29:05,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-10-11 19:29:05,464 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 159 flow. Second operand 2 states and 133 transitions. [2024-10-11 19:29:05,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 191 flow [2024-10-11 19:29:05,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 178 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:29:05,481 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 122 flow [2024-10-11 19:29:05,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-10-11 19:29:05,482 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2024-10-11 19:29:05,483 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 122 flow [2024-10-11 19:29:05,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:05,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:05,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:05,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 19:29:05,483 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:29:05,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash -211440730, now seen corresponding path program 1 times [2024-10-11 19:29:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769682602] [2024-10-11 19:29:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769682602] [2024-10-11 19:29:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769682602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:05,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594443498] [2024-10-11 19:29:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:05,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:29:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:29:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:29:05,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-10-11 19:29:05,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:05,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:05,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-10-11 19:29:05,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:12,967 INFO L124 PetriNetUnfolderBase]: 87029/112963 cut-off events. [2024-10-11 19:29:12,967 INFO L125 PetriNetUnfolderBase]: For 5082/5082 co-relation queries the response was YES. [2024-10-11 19:29:13,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221185 conditions, 112963 events. 87029/112963 cut-off events. For 5082/5082 co-relation queries the response was YES. Maximal size of possible extension queue 4061. Compared 704775 event pairs, 21478 based on Foata normal form. 188/112989 useless extension candidates. Maximal degree in co-relation 221177. Up to 101893 conditions per place. [2024-10-11 19:29:13,734 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 40 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2024-10-11 19:29:13,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 270 flow [2024-10-11 19:29:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:29:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:29:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-10-11 19:29:13,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5350140056022409 [2024-10-11 19:29:13,736 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 122 flow. Second operand 3 states and 191 transitions. [2024-10-11 19:29:13,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 270 flow [2024-10-11 19:29:13,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:29:13,741 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 162 flow [2024-10-11 19:29:13,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-11 19:29:13,742 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-10-11 19:29:13,742 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 162 flow [2024-10-11 19:29:13,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:13,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:13,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:13,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 19:29:13,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:29:13,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2072609719, now seen corresponding path program 1 times [2024-10-11 19:29:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:13,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288899127] [2024-10-11 19:29:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:13,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288899127] [2024-10-11 19:29:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288899127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:29:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601225471] [2024-10-11 19:29:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:13,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:29:13,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:29:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:29:13,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-10-11 19:29:13,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:13,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:13,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-10-11 19:29:13,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:14,193 INFO L124 PetriNetUnfolderBase]: 2900/6135 cut-off events. [2024-10-11 19:29:14,194 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2024-10-11 19:29:14,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 6135 events. 2900/6135 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 47720 event pairs, 648 based on Foata normal form. 6162/12226 useless extension candidates. Maximal degree in co-relation 13489. Up to 3945 conditions per place. [2024-10-11 19:29:14,472 INFO L140 encePairwiseOnDemand]: 107/119 looper letters, 29 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-10-11 19:29:14,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 283 flow [2024-10-11 19:29:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:29:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:29:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-10-11 19:29:14,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-10-11 19:29:14,474 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 162 flow. Second operand 3 states and 186 transitions. [2024-10-11 19:29:14,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 283 flow [2024-10-11 19:29:14,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:29:14,478 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 180 flow [2024-10-11 19:29:14,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-10-11 19:29:14,480 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-10-11 19:29:14,480 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 180 flow [2024-10-11 19:29:14,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:14,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:14,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:14,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 19:29:14,481 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:29:14,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash -592232358, now seen corresponding path program 1 times [2024-10-11 19:29:14,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730997113] [2024-10-11 19:29:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:14,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730997113] [2024-10-11 19:29:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730997113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:14,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:14,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:29:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948611332] [2024-10-11 19:29:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:14,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:29:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:29:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:29:14,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-10-11 19:29:14,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:14,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:14,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-10-11 19:29:14,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:15,064 INFO L124 PetriNetUnfolderBase]: 4045/8235 cut-off events. [2024-10-11 19:29:15,064 INFO L125 PetriNetUnfolderBase]: For 2462/2462 co-relation queries the response was YES. [2024-10-11 19:29:15,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21131 conditions, 8235 events. 4045/8235 cut-off events. For 2462/2462 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65502 event pairs, 162 based on Foata normal form. 45/8269 useless extension candidates. Maximal degree in co-relation 21121. Up to 5638 conditions per place. [2024-10-11 19:29:15,120 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 58 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-10-11 19:29:15,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 478 flow [2024-10-11 19:29:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:29:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:29:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-10-11 19:29:15,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5504201680672269 [2024-10-11 19:29:15,122 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 180 flow. Second operand 4 states and 262 transitions. [2024-10-11 19:29:15,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 478 flow [2024-10-11 19:29:15,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:29:15,135 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 232 flow [2024-10-11 19:29:15,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-10-11 19:29:15,136 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-10-11 19:29:15,136 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 232 flow [2024-10-11 19:29:15,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:15,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:15,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:15,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 19:29:15,137 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:29:15,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash -257833893, now seen corresponding path program 1 times [2024-10-11 19:29:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77099204] [2024-10-11 19:29:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:15,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77099204] [2024-10-11 19:29:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77099204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:29:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931366344] [2024-10-11 19:29:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:15,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:29:15,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:29:15,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:29:15,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:29:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:15,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:29:15,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:29:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:15,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:29:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931366344] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:29:15,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:29:15,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-11 19:29:15,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131106832] [2024-10-11 19:29:15,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:29:15,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:29:15,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:29:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:29:15,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-10-11 19:29:15,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 232 flow. Second operand has 11 states, 11 states have (on average 51.54545454545455) internal successors, (567), 11 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:15,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:15,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-10-11 19:29:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:17,516 INFO L124 PetriNetUnfolderBase]: 10055/20384 cut-off events. [2024-10-11 19:29:17,517 INFO L125 PetriNetUnfolderBase]: For 9525/9529 co-relation queries the response was YES. [2024-10-11 19:29:17,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50219 conditions, 20384 events. 10055/20384 cut-off events. For 9525/9529 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 186255 event pairs, 2115 based on Foata normal form. 171/20544 useless extension candidates. Maximal degree in co-relation 50207. Up to 6387 conditions per place. [2024-10-11 19:29:17,649 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 59 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-10-11 19:29:17,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 604 flow [2024-10-11 19:29:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:29:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:29:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2024-10-11 19:29:17,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310924369747899 [2024-10-11 19:29:17,651 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 232 flow. Second operand 5 states and 316 transitions. [2024-10-11 19:29:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 604 flow [2024-10-11 19:29:17,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 582 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-11 19:29:17,665 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 339 flow [2024-10-11 19:29:17,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-10-11 19:29:17,665 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-10-11 19:29:17,666 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 339 flow [2024-10-11 19:29:17,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.54545454545455) internal successors, (567), 11 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:17,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:17,667 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:17,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:29:17,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 19:29:17,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:29:17,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1881147712, now seen corresponding path program 1 times [2024-10-11 19:29:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657690749] [2024-10-11 19:29:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:17,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:17,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:29:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:17,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:29:17,915 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:29:17,915 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-11 19:29:17,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-10-11 19:29:17,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2024-10-11 19:29:17,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2024-10-11 19:29:17,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-10-11 19:29:17,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-10-11 19:29:17,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-10-11 19:29:17,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-10-11 19:29:17,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-10-11 19:29:17,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 19:29:17,917 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-11 19:29:17,918 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:29:17,918 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-11 19:29:17,960 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:29:17,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 141 transitions, 390 flow [2024-10-11 19:29:17,972 INFO L124 PetriNetUnfolderBase]: 9/94 cut-off events. [2024-10-11 19:29:17,972 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-11 19:29:17,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 94 events. 9/94 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2024-10-11 19:29:17,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 141 transitions, 390 flow [2024-10-11 19:29:17,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 187 flow [2024-10-11 19:29:17,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:29:17,978 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;@6a8ca73f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:29:17,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 19:29:17,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:29:17,980 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-11 19:29:17,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:17,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:17,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:29:17,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-10-11 19:29:17,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 672129899, now seen corresponding path program 1 times [2024-10-11 19:29:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326227213] [2024-10-11 19:29:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326227213] [2024-10-11 19:29:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326227213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:17,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146024774] [2024-10-11 19:29:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:17,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:29:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:29:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:29:17,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 141 [2024-10-11 19:29:17,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:17,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:17,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 141 [2024-10-11 19:29:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand