./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:24:14,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:24:14,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:24:14,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:24:14,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:24:14,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:24:14,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:24:14,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:24:14,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:24:14,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:24:14,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:24:14,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:24:14,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:24:14,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:24:14,930 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:24:14,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:24:14,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:24:14,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:24:14,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:24:14,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:24:14,932 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:24:14,932 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:24:14,932 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:24:14,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:24:14,933 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:24:14,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:24:14,933 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:24:14,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:24:14,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:24:14,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:24:14,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:24:14,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:24:14,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:24:14,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:24:14,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:24:14,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:24:14,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:24:14,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:24:14,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:24:14,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:24:14,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:24:14,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:24:14,942 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2024-10-11 19:24:15,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:24:15,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:24:15,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:24:15,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:24:15,237 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:24:15,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-10-11 19:24:16,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:24:16,883 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:24:16,884 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-10-11 19:24:16,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4dea692c7/f5e1a04bed4b4ebe87c58dc6050b4e12/FLAG1f1affa16 [2024-10-11 19:24:16,922 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4dea692c7/f5e1a04bed4b4ebe87c58dc6050b4e12 [2024-10-11 19:24:16,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:24:16,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:24:16,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:24:16,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:24:16,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:24:16,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:24:16" (1/1) ... [2024-10-11 19:24:16,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4189d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:16, skipping insertion in model container [2024-10-11 19:24:16,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:24:16" (1/1) ... [2024-10-11 19:24:16,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:24:17,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:24:17,317 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:24:17,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:24:17,415 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:24:17,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17 WrapperNode [2024-10-11 19:24:17,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:24:17,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:24:17,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:24:17,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:24:17,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,487 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-10-11 19:24:17,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:24:17,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:24:17,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:24:17,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:24:17,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,525 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:24:17,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:24:17,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:24:17,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:24:17,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:24:17,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (1/1) ... [2024-10-11 19:24:17,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:24:17,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:17,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:24:17,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:24:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 19:24:17,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 19:24:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 19:24:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 19:24:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:24:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:24:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:24:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:24:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:24:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:24:17,683 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:24:17,802 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:24:17,804 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:24:17,974 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:24:17,974 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:24:18,104 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:24:18,104 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:24:18,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:24:18 BoogieIcfgContainer [2024-10-11 19:24:18,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:24:18,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:24:18,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:24:18,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:24:18,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:24:16" (1/3) ... [2024-10-11 19:24:18,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579be58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:24:18, skipping insertion in model container [2024-10-11 19:24:18,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:17" (2/3) ... [2024-10-11 19:24:18,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579be58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:24:18, skipping insertion in model container [2024-10-11 19:24:18,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:24:18" (3/3) ... [2024-10-11 19:24:18,115 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2024-10-11 19:24:18,129 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:24:18,129 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:24:18,129 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:24:18,168 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:24:18,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2024-10-11 19:24:18,240 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-11 19:24:18,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:24:18,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-10-11 19:24:18,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2024-10-11 19:24:18,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2024-10-11 19:24:18,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:24:18,271 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;@615bc842, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:24:18,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:24:18,286 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:24:18,287 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-10-11 19:24:18,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:24:18,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:18,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:18,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:18,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash 563650960, now seen corresponding path program 1 times [2024-10-11 19:24:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:18,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936496831] [2024-10-11 19:24:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936496831] [2024-10-11 19:24:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936496831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:18,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:24:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892773955] [2024-10-11 19:24:18,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:18,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:18,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:18,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:24:18,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:18,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:18,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:24:18,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:18,735 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-10-11 19:24:18,738 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:24:18,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 292 events. 151/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 993 event pairs, 20 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 521. Up to 172 conditions per place. [2024-10-11 19:24:18,743 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2024-10-11 19:24:18,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2024-10-11 19:24:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-11 19:24:18,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-10-11 19:24:18,761 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-10-11 19:24:18,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2024-10-11 19:24:18,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:24:18,767 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2024-10-11 19:24:18,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-11 19:24:18,776 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-10-11 19:24:18,776 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2024-10-11 19:24:18,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:18,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:18,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:18,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:24:18,779 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:18,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash -488978942, now seen corresponding path program 1 times [2024-10-11 19:24:18,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:18,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596360208] [2024-10-11 19:24:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:18,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596360208] [2024-10-11 19:24:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596360208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:18,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988924379] [2024-10-11 19:24:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:18,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:18,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:18,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:24:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:19,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:24:19,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:24:19,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:24:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988924379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:24:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-11 19:24:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893143097] [2024-10-11 19:24:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:19,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:24:19,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-10-11 19:24:19,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:19,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:19,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-10-11 19:24:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:19,227 INFO L124 PetriNetUnfolderBase]: 133/256 cut-off events. [2024-10-11 19:24:19,228 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 19:24:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 256 events. 133/256 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 816 event pairs, 80 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 494. Up to 204 conditions per place. [2024-10-11 19:24:19,232 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2024-10-11 19:24:19,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2024-10-11 19:24:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-11 19:24:19,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-10-11 19:24:19,235 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2024-10-11 19:24:19,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2024-10-11 19:24:19,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:19,238 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2024-10-11 19:24:19,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-10-11 19:24:19,239 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-10-11 19:24:19,240 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2024-10-11 19:24:19,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:19,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:19,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:19,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:24:19,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:19,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:19,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:19,442 INFO L85 PathProgramCache]: Analyzing trace with hash -488977835, now seen corresponding path program 1 times [2024-10-11 19:24:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:19,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463151914] [2024-10-11 19:24:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463151914] [2024-10-11 19:24:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463151914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848166796] [2024-10-11 19:24:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:19,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:19,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:19,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:19,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:24:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:19,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:24:19,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:19,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:24:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848166796] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:24:19,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:24:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 19:24:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406514340] [2024-10-11 19:24:19,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:24:19,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:24:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:24:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:24:19,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:24:19,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:19,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:19,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:24:19,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:19,802 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-10-11 19:24:19,803 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:24:19,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 310 events. 169/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 926 event pairs, 20 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 628. Up to 118 conditions per place. [2024-10-11 19:24:19,808 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-10-11 19:24:19,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2024-10-11 19:24:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:24:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:24:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-11 19:24:19,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-10-11 19:24:19,812 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2024-10-11 19:24:19,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2024-10-11 19:24:19,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:19,815 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2024-10-11 19:24:19,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-10-11 19:24:19,816 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-10-11 19:24:19,817 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2024-10-11 19:24:19,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:19,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:19,818 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:19,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:24:20,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:20,019 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:20,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1932997219, now seen corresponding path program 2 times [2024-10-11 19:24:20,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:20,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642056534] [2024-10-11 19:24:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:20,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642056534] [2024-10-11 19:24:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642056534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22950879] [2024-10-11 19:24:20,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:24:20,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:20,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:20,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:20,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:24:20,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:24:20,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:24:20,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:24:20,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:20,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:24:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:20,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22950879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:24:20,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:24:20,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 19:24:20,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506068852] [2024-10-11 19:24:20,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:24:20,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:24:20,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:24:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:24:20,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:24:20,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:20,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:20,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:24:20,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:20,529 INFO L124 PetriNetUnfolderBase]: 277/472 cut-off events. [2024-10-11 19:24:20,529 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-11 19:24:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 472 events. 277/472 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1325 event pairs, 20 based on Foata normal form. 54/524 useless extension candidates. Maximal degree in co-relation 1159. Up to 118 conditions per place. [2024-10-11 19:24:20,535 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-11 19:24:20,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2024-10-11 19:24:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:24:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:24:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-10-11 19:24:20,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-10-11 19:24:20,537 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2024-10-11 19:24:20,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2024-10-11 19:24:20,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:20,543 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2024-10-11 19:24:20,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-10-11 19:24:20,545 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-10-11 19:24:20,545 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2024-10-11 19:24:20,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:20,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:20,545 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:20,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:24:20,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:20,750 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:20,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 749587747, now seen corresponding path program 3 times [2024-10-11 19:24:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380339201] [2024-10-11 19:24:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:20,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:20,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380339201] [2024-10-11 19:24:20,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380339201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532876248] [2024-10-11 19:24:20,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:24:20,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:20,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:20,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:20,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:24:21,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 19:24:21,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:24:21,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:24:21,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:21,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:24:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532876248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:24:21,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:24:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-10-11 19:24:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374665679] [2024-10-11 19:24:21,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:24:21,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:24:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:24:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:24:21,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:24:21,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:21,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:21,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:24:21,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:21,412 INFO L124 PetriNetUnfolderBase]: 313/526 cut-off events. [2024-10-11 19:24:21,412 INFO L125 PetriNetUnfolderBase]: For 972/972 co-relation queries the response was YES. [2024-10-11 19:24:21,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 526 events. 313/526 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1458 event pairs, 20 based on Foata normal form. 18/542 useless extension candidates. Maximal degree in co-relation 1474. Up to 118 conditions per place. [2024-10-11 19:24:21,417 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 87 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-10-11 19:24:21,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 533 flow [2024-10-11 19:24:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:24:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:24:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 284 transitions. [2024-10-11 19:24:21,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5966386554621849 [2024-10-11 19:24:21,419 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 14 states and 284 transitions. [2024-10-11 19:24:21,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 533 flow [2024-10-11 19:24:21,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 481 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-10-11 19:24:21,430 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 173 flow [2024-10-11 19:24:21,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2024-10-11 19:24:21,431 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2024-10-11 19:24:21,433 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 173 flow [2024-10-11 19:24:21,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:21,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:21,434 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:21,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 19:24:21,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:21,637 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:21,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash -465204381, now seen corresponding path program 4 times [2024-10-11 19:24:21,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:21,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042369287] [2024-10-11 19:24:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042369287] [2024-10-11 19:24:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042369287] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575078813] [2024-10-11 19:24:22,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:24:22,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:22,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:22,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:22,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:24:22,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:24:22,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:24:22,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 19:24:22,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:23,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:24:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575078813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:24:24,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:24:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 54 [2024-10-11 19:24:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354278054] [2024-10-11 19:24:24,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:24:24,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-11 19:24:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-11 19:24:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2575, Unknown=0, NotChecked=0, Total=2970 [2024-10-11 19:24:24,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-11 19:24:24,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 173 flow. Second operand has 55 states, 55 states have (on average 8.309090909090909) internal successors, (457), 55 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:24,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:24,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-11 19:24:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:38,517 INFO L124 PetriNetUnfolderBase]: 12265/20179 cut-off events. [2024-10-11 19:24:38,517 INFO L125 PetriNetUnfolderBase]: For 34022/34022 co-relation queries the response was YES. [2024-10-11 19:24:38,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51810 conditions, 20179 events. 12265/20179 cut-off events. For 34022/34022 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 128863 event pairs, 226 based on Foata normal form. 0/19896 useless extension candidates. Maximal degree in co-relation 51789. Up to 2550 conditions per place. [2024-10-11 19:24:38,641 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 493 selfloop transitions, 445 changer transitions 613/1555 dead transitions. [2024-10-11 19:24:38,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1555 transitions, 8748 flow [2024-10-11 19:24:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-10-11 19:24:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2024-10-11 19:24:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 2343 transitions. [2024-10-11 19:24:38,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45040369088811993 [2024-10-11 19:24:38,650 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 173 flow. Second operand 153 states and 2343 transitions. [2024-10-11 19:24:38,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1555 transitions, 8748 flow [2024-10-11 19:24:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1555 transitions, 7766 flow, removed 210 selfloop flow, removed 11 redundant places. [2024-10-11 19:24:38,754 INFO L231 Difference]: Finished difference. Result has 268 places, 527 transitions, 3171 flow [2024-10-11 19:24:38,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=153, PETRI_FLOW=3171, PETRI_PLACES=268, PETRI_TRANSITIONS=527} [2024-10-11 19:24:38,757 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 234 predicate places. [2024-10-11 19:24:38,757 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 527 transitions, 3171 flow [2024-10-11 19:24:38,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 8.309090909090909) internal successors, (457), 55 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:38,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:38,759 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:38,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:24:38,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:38,964 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:38,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash 170006399, now seen corresponding path program 1 times [2024-10-11 19:24:38,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:38,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721302665] [2024-10-11 19:24:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:39,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721302665] [2024-10-11 19:24:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721302665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093180607] [2024-10-11 19:24:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:39,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:39,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:39,938 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:39,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:24:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:40,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-11 19:24:40,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 55 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:40,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:24:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093180607] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:24:41,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:24:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2024-10-11 19:24:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255599223] [2024-10-11 19:24:41,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:24:41,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-11 19:24:41,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-11 19:24:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=3348, Unknown=0, NotChecked=0, Total=3782 [2024-10-11 19:24:41,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-11 19:24:41,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 527 transitions, 3171 flow. Second operand has 62 states, 62 states have (on average 8.35483870967742) internal successors, (518), 62 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:41,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:41,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-11 19:24:41,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand