./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:22:37,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:22:37,077 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:22:37,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:22:37,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:22:37,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:22:37,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:22:37,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:22:37,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:22:37,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:22:37,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:22:37,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:22:37,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:22:37,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:22:37,105 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:22:37,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:22:37,107 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:22:37,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:22:37,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:22:37,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:22:37,109 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:22:37,111 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:22:37,111 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:22:37,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:22:37,111 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:22:37,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:22:37,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:22:37,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:22:37,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:22:37,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:22:37,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:22:37,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:22:37,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:22:37,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:22:37,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:22:37,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:22:37,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:22:37,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:22:37,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:22:37,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:22:37,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:22:37,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:22:37,114 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d [2024-11-19 09:22:37,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:22:37,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:22:37,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:22:37,338 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:22:37,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:22:37,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-19 09:22:38,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:22:38,943 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:22:38,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-19 09:22:38,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d568d4504/44ed6deb592148d7b8acb9d6e2651748/FLAGcc64ab01a [2024-11-19 09:22:38,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d568d4504/44ed6deb592148d7b8acb9d6e2651748 [2024-11-19 09:22:38,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:22:38,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:22:38,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:22:38,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:22:38,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:22:39,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:38" (1/1) ... [2024-11-19 09:22:39,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c15865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39, skipping insertion in model container [2024-11-19 09:22:39,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:38" (1/1) ... [2024-11-19 09:22:39,071 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:22:39,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:22:39,449 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:22:39,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:22:39,558 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:22:39,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39 WrapperNode [2024-11-19 09:22:39,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:22:39,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:22:39,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:22:39,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:22:39,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,608 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-19 09:22:39,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:22:39,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:22:39,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:22:39,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:22:39,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,627 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-19 09:22:39,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:22:39,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:22:39,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:22:39,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:22:39,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:22:39,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:22:39,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:22:39,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:22:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-19 09:22:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-19 09:22:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 09:22:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 09:22:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:22:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:22:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:22:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:22:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:22:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:22:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:22:39,731 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:22:39,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:22:39,866 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:22:40,068 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:22:40,069 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:22:40,196 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:22:40,196 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:22:40,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:40 BoogieIcfgContainer [2024-11-19 09:22:40,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:22:40,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:22:40,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:22:40,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:22:40,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:22:38" (1/3) ... [2024-11-19 09:22:40,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1b920b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:22:40, skipping insertion in model container [2024-11-19 09:22:40,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39" (2/3) ... [2024-11-19 09:22:40,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1b920b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:22:40, skipping insertion in model container [2024-11-19 09:22:40,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:40" (3/3) ... [2024-11-19 09:22:40,202 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2024-11-19 09:22:40,214 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:22:40,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:22:40,214 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:22:40,243 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 70 flow [2024-11-19 09:22:40,293 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 09:22:40,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:40,298 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. [2024-11-19 09:22:40,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 70 flow [2024-11-19 09:22:40,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 67 flow [2024-11-19 09:22:40,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:40,311 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;@6ee4e6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:40,312 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 09:22:40,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:40,316 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 09:22:40,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:40,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:40,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:22:40,317 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:22:40,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 206163919, now seen corresponding path program 1 times [2024-11-19 09:22:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479178261] [2024-11-19 09:22:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479178261] [2024-11-19 09:22:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479178261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469618863] [2024-11-19 09:22:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:40,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:40,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:40,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:40,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-11-19 09:22:40,489 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) [2024-11-19 09:22:40,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:40,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-11-19 09:22:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:40,534 INFO L124 PetriNetUnfolderBase]: 79/166 cut-off events. [2024-11-19 09:22:40,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:40,535 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. [2024-11-19 09:22:40,537 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 12 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-11-19 09:22:40,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 75 flow [2024-11-19 09:22:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2024-11-19 09:22:40,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-19 09:22:40,548 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 67 flow. Second operand 2 states and 41 transitions. [2024-11-19 09:22:40,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 75 flow [2024-11-19 09:22:40,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:40,551 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2024-11-19 09:22:40,552 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} [2024-11-19 09:22:40,554 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2024-11-19 09:22:40,554 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2024-11-19 09:22:40,554 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) [2024-11-19 09:22:40,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:40,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:40,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:22:40,555 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)] === [2024-11-19 09:22:40,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash 26218542, now seen corresponding path program 1 times [2024-11-19 09:22:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:40,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399755356] [2024-11-19 09:22:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:40,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:22:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:40,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:22:40,595 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:22:40,596 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-19 09:22:40,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-19 09:22:40,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-19 09:22:40,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-19 09:22:40,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-19 09:22:40,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:22:40,598 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 09:22:40,600 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:22:40,600 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:22:40,615 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:40,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 126 flow [2024-11-19 09:22:40,624 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-19 09:22:40,624 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:22:40,624 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. [2024-11-19 09:22:40,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 126 flow [2024-11-19 09:22:40,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 87 flow [2024-11-19 09:22:40,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:40,627 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;@6ee4e6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:40,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 09:22:40,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:40,629 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 09:22:40,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:40,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:40,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:22:40,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:22:40,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:40,630 INFO L85 PathProgramCache]: Analyzing trace with hash 257367695, now seen corresponding path program 1 times [2024-11-19 09:22:40,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:40,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052152927] [2024-11-19 09:22:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:40,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:40,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052152927] [2024-11-19 09:22:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052152927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:40,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:40,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921928498] [2024-11-19 09:22:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:40,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:40,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-19 09:22:40,655 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) [2024-11-19 09:22:40,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:40,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-19 09:22:40,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:40,762 INFO L124 PetriNetUnfolderBase]: 559/918 cut-off events. [2024-11-19 09:22:40,762 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-19 09:22:40,766 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. [2024-11-19 09:22:40,771 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 16 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-19 09:22:40,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 101 flow [2024-11-19 09:22:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2024-11-19 09:22:40,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-11-19 09:22:40,772 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 87 flow. Second operand 2 states and 64 transitions. [2024-11-19 09:22:40,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 101 flow [2024-11-19 09:22:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:40,774 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 68 flow [2024-11-19 09:22:40,774 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} [2024-11-19 09:22:40,775 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-11-19 09:22:40,775 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 68 flow [2024-11-19 09:22:40,775 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) [2024-11-19 09:22:40,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:40,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:40,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:22:40,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:22:40,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash -823457228, now seen corresponding path program 1 times [2024-11-19 09:22:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:40,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739464142] [2024-11-19 09:22:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:40,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:40,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739464142] [2024-11-19 09:22:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739464142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:40,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:40,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392709987] [2024-11-19 09:22:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:40,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:40,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-19 09:22:40,876 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) [2024-11-19 09:22:40,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:40,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-19 09:22:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:41,021 INFO L124 PetriNetUnfolderBase]: 620/1066 cut-off events. [2024-11-19 09:22:41,021 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-19 09:22:41,023 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. [2024-11-19 09:22:41,029 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 22 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-19 09:22:41,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 141 flow [2024-11-19 09:22:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:22:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:22:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-19 09:22:41,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2024-11-19 09:22:41,033 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 3 states and 89 transitions. [2024-11-19 09:22:41,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 141 flow [2024-11-19 09:22:41,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:22:41,036 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 87 flow [2024-11-19 09:22:41,036 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} [2024-11-19 09:22:41,036 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-19 09:22:41,037 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 87 flow [2024-11-19 09:22:41,037 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) [2024-11-19 09:22:41,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:41,037 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:41,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:22:41,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:22:41,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash -212865088, now seen corresponding path program 1 times [2024-11-19 09:22:41,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:41,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690670814] [2024-11-19 09:22:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:41,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:41,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:22:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:41,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:22:41,064 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:22:41,064 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 09:22:41,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-19 09:22:41,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-19 09:22:41,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-19 09:22:41,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-19 09:22:41,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-19 09:22:41,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:22:41,065 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:22:41,066 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:22:41,066 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:22:41,088 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:41,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 186 flow [2024-11-19 09:22:41,095 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-11-19 09:22:41,095 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:22:41,096 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. [2024-11-19 09:22:41,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 186 flow [2024-11-19 09:22:41,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 44 transitions, 109 flow [2024-11-19 09:22:41,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:41,100 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;@6ee4e6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:41,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-19 09:22:41,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:41,103 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 09:22:41,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:41,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:41,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:22:41,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:22:41,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:41,104 INFO L85 PathProgramCache]: Analyzing trace with hash 329566181, now seen corresponding path program 1 times [2024-11-19 09:22:41,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:41,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403021956] [2024-11-19 09:22:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:41,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:41,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403021956] [2024-11-19 09:22:41,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403021956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:41,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:41,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672789476] [2024-11-19 09:22:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:41,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:41,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:41,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-19 09:22:41,122 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) [2024-11-19 09:22:41,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:41,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-19 09:22:41,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:41,558 INFO L124 PetriNetUnfolderBase]: 3247/4710 cut-off events. [2024-11-19 09:22:41,558 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-11-19 09:22:41,565 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. [2024-11-19 09:22:41,583 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-19 09:22:41,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 129 flow [2024-11-19 09:22:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-11-19 09:22:41,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-19 09:22:41,585 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 109 flow. Second operand 2 states and 87 transitions. [2024-11-19 09:22:41,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 129 flow [2024-11-19 09:22:41,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:41,587 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 86 flow [2024-11-19 09:22:41,587 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} [2024-11-19 09:22:41,588 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2024-11-19 09:22:41,588 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 86 flow [2024-11-19 09:22:41,588 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) [2024-11-19 09:22:41,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:41,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:41,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:22:41,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:22:41,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2086411230, now seen corresponding path program 1 times [2024-11-19 09:22:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:41,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413321426] [2024-11-19 09:22:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:41,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:41,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413321426] [2024-11-19 09:22:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413321426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:41,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:41,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:41,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557496931] [2024-11-19 09:22:41,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:41,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:41,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-19 09:22:41,639 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) [2024-11-19 09:22:41,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:41,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-19 09:22:41,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:42,051 INFO L124 PetriNetUnfolderBase]: 3515/5257 cut-off events. [2024-11-19 09:22:42,053 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-11-19 09:22:42,062 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. [2024-11-19 09:22:42,085 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 28 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-19 09:22:42,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 184 flow [2024-11-19 09:22:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:22:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:22:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-19 09:22:42,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-19 09:22:42,089 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 86 flow. Second operand 3 states and 123 transitions. [2024-11-19 09:22:42,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 184 flow [2024-11-19 09:22:42,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:22:42,092 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 112 flow [2024-11-19 09:22:42,092 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} [2024-11-19 09:22:42,093 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-19 09:22:42,093 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 112 flow [2024-11-19 09:22:42,094 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) [2024-11-19 09:22:42,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:42,094 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:42,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:22:42,094 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:22:42,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:42,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1401397513, now seen corresponding path program 1 times [2024-11-19 09:22:42,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:42,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565564143] [2024-11-19 09:22:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:42,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:42,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:22:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:42,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:22:42,120 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:22:42,120 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-19 09:22:42,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-19 09:22:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-19 09:22:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-19 09:22:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-19 09:22:42,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-19 09:22:42,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-19 09:22:42,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:22:42,125 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:22:42,125 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:22:42,125 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 09:22:42,159 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:42,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 250 flow [2024-11-19 09:22:42,167 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2024-11-19 09:22:42,167 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:22:42,168 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. [2024-11-19 09:22:42,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 97 transitions, 250 flow [2024-11-19 09:22:42,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 133 flow [2024-11-19 09:22:42,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:42,170 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;@6ee4e6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:42,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 09:22:42,171 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:42,171 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 09:22:42,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:42,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:42,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:22:42,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:22:42,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 422759377, now seen corresponding path program 1 times [2024-11-19 09:22:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580084745] [2024-11-19 09:22:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:42,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:42,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:42,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580084745] [2024-11-19 09:22:42,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580084745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:42,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:42,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:42,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191423700] [2024-11-19 09:22:42,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:42,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:42,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:42,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-19 09:22:42,193 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) [2024-11-19 09:22:42,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:42,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-19 09:22:42,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:43,937 INFO L124 PetriNetUnfolderBase]: 17071/22950 cut-off events. [2024-11-19 09:22:43,937 INFO L125 PetriNetUnfolderBase]: For 4208/4208 co-relation queries the response was YES. [2024-11-19 09:22:43,977 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. [2024-11-19 09:22:44,062 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 24 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-11-19 09:22:44,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 159 flow [2024-11-19 09:22:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2024-11-19 09:22:44,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5670103092783505 [2024-11-19 09:22:44,063 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 133 flow. Second operand 2 states and 110 transitions. [2024-11-19 09:22:44,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 159 flow [2024-11-19 09:22:44,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 152 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:44,068 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 104 flow [2024-11-19 09:22:44,068 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} [2024-11-19 09:22:44,068 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2024-11-19 09:22:44,069 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 104 flow [2024-11-19 09:22:44,069 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) [2024-11-19 09:22:44,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:44,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:44,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:22:44,069 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:22:44,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2065459860, now seen corresponding path program 1 times [2024-11-19 09:22:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065492891] [2024-11-19 09:22:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:44,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065492891] [2024-11-19 09:22:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065492891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:44,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:44,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043820101] [2024-11-19 09:22:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:44,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:44,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-19 09:22:44,111 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) [2024-11-19 09:22:44,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:44,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-19 09:22:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:45,823 INFO L124 PetriNetUnfolderBase]: 17930/24628 cut-off events. [2024-11-19 09:22:45,824 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-11-19 09:22:45,884 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. [2024-11-19 09:22:46,048 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 34 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-19 09:22:46,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 227 flow [2024-11-19 09:22:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:22:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:22:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-19 09:22:46,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395189003436426 [2024-11-19 09:22:46,051 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 104 flow. Second operand 3 states and 157 transitions. [2024-11-19 09:22:46,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 227 flow [2024-11-19 09:22:46,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:22:46,053 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 137 flow [2024-11-19 09:22:46,054 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} [2024-11-19 09:22:46,055 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2024-11-19 09:22:46,055 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 137 flow [2024-11-19 09:22:46,055 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) [2024-11-19 09:22:46,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:46,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:46,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:22:46,056 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:22:46,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash 862871265, now seen corresponding path program 1 times [2024-11-19 09:22:46,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:46,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684035748] [2024-11-19 09:22:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:46,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684035748] [2024-11-19 09:22:46,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684035748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:46,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:46,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:22:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73563539] [2024-11-19 09:22:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:46,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:46,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-19 09:22:46,122 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) [2024-11-19 09:22:46,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:46,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-19 09:22:46,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:46,393 INFO L124 PetriNetUnfolderBase]: 1187/2607 cut-off events. [2024-11-19 09:22:46,393 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-19 09:22:46,400 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. [2024-11-19 09:22:46,406 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 25 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-11-19 09:22:46,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 239 flow [2024-11-19 09:22:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:22:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:22:46,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-19 09:22:46,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5257731958762887 [2024-11-19 09:22:46,412 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 137 flow. Second operand 3 states and 153 transitions. [2024-11-19 09:22:46,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 239 flow [2024-11-19 09:22:46,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:46,416 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 152 flow [2024-11-19 09:22:46,416 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} [2024-11-19 09:22:46,416 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-19 09:22:46,417 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 152 flow [2024-11-19 09:22:46,418 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) [2024-11-19 09:22:46,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:46,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:46,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:22:46,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:22:46,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1203977249, now seen corresponding path program 1 times [2024-11-19 09:22:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:46,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250119963] [2024-11-19 09:22:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:46,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250119963] [2024-11-19 09:22:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250119963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:46,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:46,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:22:46,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143257724] [2024-11-19 09:22:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:46,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:22:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:22:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:22:46,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-19 09:22:46,490 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) [2024-11-19 09:22:46,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:46,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-19 09:22:46,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:46,720 INFO L124 PetriNetUnfolderBase]: 1731/3694 cut-off events. [2024-11-19 09:22:46,720 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-11-19 09:22:46,729 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. [2024-11-19 09:22:46,741 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 49 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-11-19 09:22:46,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 398 flow [2024-11-19 09:22:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:22:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:22:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-19 09:22:46,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5541237113402062 [2024-11-19 09:22:46,744 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 152 flow. Second operand 4 states and 215 transitions. [2024-11-19 09:22:46,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 398 flow [2024-11-19 09:22:46,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:46,749 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 194 flow [2024-11-19 09:22:46,749 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} [2024-11-19 09:22:46,749 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-19 09:22:46,749 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 194 flow [2024-11-19 09:22:46,750 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) [2024-11-19 09:22:46,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:46,750 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:46,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:22:46,750 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)] === [2024-11-19 09:22:46,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 360081993, now seen corresponding path program 1 times [2024-11-19 09:22:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904980419] [2024-11-19 09:22:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:46,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:22:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:46,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:22:46,767 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:22:46,767 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-19 09:22:46,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-19 09:22:46,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-19 09:22:46,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-19 09:22:46,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-19 09:22:46,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-19 09:22:46,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-19 09:22:46,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-19 09:22:46,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:22:46,768 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:22:46,769 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:22:46,769 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 09:22:46,796 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:46,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 318 flow [2024-11-19 09:22:46,801 INFO L124 PetriNetUnfolderBase]: 8/82 cut-off events. [2024-11-19 09:22:46,801 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 09:22:46,802 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. [2024-11-19 09:22:46,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 119 transitions, 318 flow [2024-11-19 09:22:46,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 58 transitions, 159 flow [2024-11-19 09:22:46,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:46,803 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;@6ee4e6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:46,803 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-19 09:22:46,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:46,804 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 09:22:46,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:46,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:46,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:22:46,805 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)] === [2024-11-19 09:22:46,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:46,805 INFO L85 PathProgramCache]: Analyzing trace with hash 536947283, now seen corresponding path program 1 times [2024-11-19 09:22:46,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:46,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424105098] [2024-11-19 09:22:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:46,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424105098] [2024-11-19 09:22:46,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424105098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:46,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:46,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639201447] [2024-11-19 09:22:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:46,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:46,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-19 09:22:46,814 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) [2024-11-19 09:22:46,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:46,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-19 09:22:46,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:54,259 INFO L124 PetriNetUnfolderBase]: 84655/108198 cut-off events. [2024-11-19 09:22:54,260 INFO L125 PetriNetUnfolderBase]: For 26992/26992 co-relation queries the response was YES. [2024-11-19 09:22:54,607 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. [2024-11-19 09:22:55,378 INFO L140 encePairwiseOnDemand]: 110/119 looper letters, 28 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-11-19 09:22:55,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 191 flow [2024-11-19 09:22:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 133 transitions. [2024-11-19 09:22:55,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-19 09:22:55,380 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 159 flow. Second operand 2 states and 133 transitions. [2024-11-19 09:22:55,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 191 flow [2024-11-19 09:22:55,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 178 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 09:22:55,394 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 122 flow [2024-11-19 09:22:55,394 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} [2024-11-19 09:22:55,395 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2024-11-19 09:22:55,395 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 122 flow [2024-11-19 09:22:55,395 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) [2024-11-19 09:22:55,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:55,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:22:55,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:22:55,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:22:55,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -211440730, now seen corresponding path program 1 times [2024-11-19 09:22:55,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:55,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191461647] [2024-11-19 09:22:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:55,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191461647] [2024-11-19 09:22:55,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191461647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:55,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:55,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:55,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142554444] [2024-11-19 09:22:55,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:55,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:55,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:55,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-19 09:22:55,438 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) [2024-11-19 09:22:55,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:55,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-19 09:22:55,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:02,116 INFO L124 PetriNetUnfolderBase]: 87029/112963 cut-off events. [2024-11-19 09:23:02,116 INFO L125 PetriNetUnfolderBase]: For 5082/5082 co-relation queries the response was YES. [2024-11-19 09:23:02,510 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. [2024-11-19 09:23:03,250 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 40 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2024-11-19 09:23:03,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 270 flow [2024-11-19 09:23:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-19 09:23:03,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5350140056022409 [2024-11-19 09:23:03,252 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 122 flow. Second operand 3 states and 191 transitions. [2024-11-19 09:23:03,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 270 flow [2024-11-19 09:23:03,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:03,256 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 162 flow [2024-11-19 09:23:03,256 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} [2024-11-19 09:23:03,257 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-11-19 09:23:03,257 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 162 flow [2024-11-19 09:23:03,257 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) [2024-11-19 09:23:03,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:03,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:03,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:23:03,258 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:23:03,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2072609719, now seen corresponding path program 1 times [2024-11-19 09:23:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15448358] [2024-11-19 09:23:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:03,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:03,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15448358] [2024-11-19 09:23:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15448358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:03,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:03,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:23:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343733737] [2024-11-19 09:23:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:03,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:03,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:03,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-19 09:23:03,295 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) [2024-11-19 09:23:03,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:03,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-19 09:23:03,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:03,766 INFO L124 PetriNetUnfolderBase]: 2900/6135 cut-off events. [2024-11-19 09:23:03,766 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2024-11-19 09:23:03,792 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. [2024-11-19 09:23:03,816 INFO L140 encePairwiseOnDemand]: 107/119 looper letters, 29 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-11-19 09:23:03,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 283 flow [2024-11-19 09:23:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-19 09:23:03,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-11-19 09:23:03,817 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 162 flow. Second operand 3 states and 186 transitions. [2024-11-19 09:23:03,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 283 flow [2024-11-19 09:23:03,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:23:03,827 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 180 flow [2024-11-19 09:23:03,827 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} [2024-11-19 09:23:03,827 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-11-19 09:23:03,827 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 180 flow [2024-11-19 09:23:03,828 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) [2024-11-19 09:23:03,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:03,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:03,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:23:03,828 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:23:03,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash -592232358, now seen corresponding path program 1 times [2024-11-19 09:23:03,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:03,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020842014] [2024-11-19 09:23:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:03,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:03,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020842014] [2024-11-19 09:23:03,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020842014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:03,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:03,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:23:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419480740] [2024-11-19 09:23:03,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:03,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:23:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:23:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:23:03,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-19 09:23:03,919 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) [2024-11-19 09:23:03,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:03,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-19 09:23:03,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:04,678 INFO L124 PetriNetUnfolderBase]: 4045/8235 cut-off events. [2024-11-19 09:23:04,678 INFO L125 PetriNetUnfolderBase]: For 2462/2462 co-relation queries the response was YES. [2024-11-19 09:23:04,695 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. [2024-11-19 09:23:04,716 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 58 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-11-19 09:23:04,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 478 flow [2024-11-19 09:23:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:23:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:23:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-19 09:23:04,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5504201680672269 [2024-11-19 09:23:04,718 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 180 flow. Second operand 4 states and 262 transitions. [2024-11-19 09:23:04,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 478 flow [2024-11-19 09:23:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:23:04,724 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 232 flow [2024-11-19 09:23:04,725 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} [2024-11-19 09:23:04,725 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-11-19 09:23:04,725 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 232 flow [2024-11-19 09:23:04,725 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) [2024-11-19 09:23:04,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:04,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:04,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:23:04,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:23:04,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash -257833893, now seen corresponding path program 1 times [2024-11-19 09:23:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:04,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433338935] [2024-11-19 09:23:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:04,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433338935] [2024-11-19 09:23:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433338935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:23:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617060635] [2024-11-19 09:23:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:04,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:23:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:23:04,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:23:04,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:23:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:04,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:23:04,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:23:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:04,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:23:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617060635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:23:05,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:23:05,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 09:23:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450106725] [2024-11-19 09:23:05,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:23:05,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:23:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:23:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:23:05,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-19 09:23:05,187 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) [2024-11-19 09:23:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-19 09:23:05,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:06,683 INFO L124 PetriNetUnfolderBase]: 10055/20384 cut-off events. [2024-11-19 09:23:06,684 INFO L125 PetriNetUnfolderBase]: For 9525/9529 co-relation queries the response was YES. [2024-11-19 09:23:06,755 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. [2024-11-19 09:23:06,822 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 59 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-11-19 09:23:06,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 604 flow [2024-11-19 09:23:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:23:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:23:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2024-11-19 09:23:06,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310924369747899 [2024-11-19 09:23:06,824 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 232 flow. Second operand 5 states and 316 transitions. [2024-11-19 09:23:06,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 604 flow [2024-11-19 09:23:06,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 582 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-19 09:23:06,835 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 339 flow [2024-11-19 09:23:06,835 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} [2024-11-19 09:23:06,836 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-19 09:23:06,836 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 339 flow [2024-11-19 09:23:06,836 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) [2024-11-19 09:23:06,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:06,836 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:06,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:23:07,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:23:07,041 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)] === [2024-11-19 09:23:07,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1881147712, now seen corresponding path program 1 times [2024-11-19 09:23:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862851455] [2024-11-19 09:23:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:07,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:07,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:07,060 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:07,060 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-19 09:23:07,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-19 09:23:07,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2024-11-19 09:23:07,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2024-11-19 09:23:07,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-19 09:23:07,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-19 09:23:07,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-19 09:23:07,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-19 09:23:07,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-19 09:23:07,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:23:07,061 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-19 09:23:07,061 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:07,061 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-19 09:23:07,090 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:07,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 141 transitions, 390 flow [2024-11-19 09:23:07,095 INFO L124 PetriNetUnfolderBase]: 9/94 cut-off events. [2024-11-19 09:23:07,095 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 09:23:07,096 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. [2024-11-19 09:23:07,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 141 transitions, 390 flow [2024-11-19 09:23:07,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 187 flow [2024-11-19 09:23:07,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:07,097 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;@6ee4e6eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:07,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 09:23:07,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:07,098 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 09:23:07,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:07,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:07,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:23:07,099 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)] === [2024-11-19 09:23:07,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 672129899, now seen corresponding path program 1 times [2024-11-19 09:23:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:07,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680404713] [2024-11-19 09:23:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:07,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680404713] [2024-11-19 09:23:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680404713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:07,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:07,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:07,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149707698] [2024-11-19 09:23:07,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:07,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:07,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 141 [2024-11-19 09:23:07,107 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) [2024-11-19 09:23:07,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:07,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 141 [2024-11-19 09:23:07,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand