./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-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-10.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 89d9c43e2f37f1bac8114d01260f8a993f33530b50231d4afed1f3cf3859d385 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:06:31,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:06:31,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:06:31,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:06:31,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:06:31,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:06:31,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:06:31,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:06:31,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:06:31,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:06:31,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:06:31,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:06:31,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:06:31,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:06:31,651 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:06:31,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:06:31,652 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:06:31,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:06:31,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:06:31,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:06:31,653 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:06:31,653 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:06:31,654 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:06:31,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:06:31,654 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:06:31,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:06:31,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:06:31,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:06:31,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:06:31,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:06:31,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:06:31,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:06:31,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:06:31,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:06:31,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:06:31,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:06:31,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:06:31,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:06:31,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:06:31,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:06:31,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:06:31,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:06:31,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89d9c43e2f37f1bac8114d01260f8a993f33530b50231d4afed1f3cf3859d385 [2024-10-13 12:06:31,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:06:31,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:06:31,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:06:31,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:06:31,966 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:06:31,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-10.i [2024-10-13 12:06:33,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:06:34,124 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:06:34,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-10.i [2024-10-13 12:06:34,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2d75f84/02c0b74ca88447269c9ca1da72bf78ef/FLAG73788e8d2 [2024-10-13 12:06:34,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2d75f84/02c0b74ca88447269c9ca1da72bf78ef [2024-10-13 12:06:34,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:06:34,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:06:34,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:06:34,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:06:34,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:06:34,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26970804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34, skipping insertion in model container [2024-10-13 12:06:34,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:06:34,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:06:34,644 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:06:34,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:06:34,740 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:06:34,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34 WrapperNode [2024-10-13 12:06:34,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:06:34,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:06:34,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:06:34,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:06:34,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,795 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-10-13 12:06:34,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:06:34,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:06:34,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:06:34,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:06:34,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,832 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]. [2024-10-13 12:06:34,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:06:34,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:06:34,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:06:34,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:06:34,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (1/1) ... [2024-10-13 12:06:34,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:06:34,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:34,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:06:34,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:06:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 12:06:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 12:06:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 12:06:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 12:06:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:06:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:06:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:06:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:06:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:06:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:06:34,982 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:06:35,104 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:06:35,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:06:35,265 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:06:35,266 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:06:35,363 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:06:35,363 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 12:06:35,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:35 BoogieIcfgContainer [2024-10-13 12:06:35,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:06:35,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:06:35,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:06:35,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:06:35,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:06:34" (1/3) ... [2024-10-13 12:06:35,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ce990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:06:35, skipping insertion in model container [2024-10-13 12:06:35,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:34" (2/3) ... [2024-10-13 12:06:35,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ce990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:06:35, skipping insertion in model container [2024-10-13 12:06:35,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:35" (3/3) ... [2024-10-13 12:06:35,372 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-10.i [2024-10-13 12:06:35,389 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:06:35,389 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:06:35,390 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:06:35,426 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:06:35,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2024-10-13 12:06:35,487 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-13 12:06:35,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:06:35,490 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. [2024-10-13 12:06:35,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2024-10-13 12:06:35,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2024-10-13 12:06:35,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:06:35,511 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;@1a5d561a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:06:35,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:06:35,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:06:35,524 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-10-13 12:06:35,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:06:35,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:35,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:35,526 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)] === [2024-10-13 12:06:35,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 563650960, now seen corresponding path program 1 times [2024-10-13 12:06:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232179547] [2024-10-13 12:06:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:35,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:35,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232179547] [2024-10-13 12:06:35,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232179547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:06:35,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:06:35,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:06:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968164330] [2024-10-13 12:06:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:06:35,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:06:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:35,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:06:35,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:06:35,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-13 12:06:35,825 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) [2024-10-13 12:06:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-13 12:06:35,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:35,952 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-10-13 12:06:35,952 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:06:35,954 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. [2024-10-13 12:06:35,958 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2024-10-13 12:06:35,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2024-10-13 12:06:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:06:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:06:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-13 12:06:35,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-10-13 12:06:35,975 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-10-13 12:06:35,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2024-10-13 12:06:35,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:06:35,985 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2024-10-13 12:06:35,988 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} [2024-10-13 12:06:35,992 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-10-13 12:06:35,992 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2024-10-13 12:06:35,993 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) [2024-10-13 12:06:35,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:35,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:35,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:06:35,994 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)] === [2024-10-13 12:06:35,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash -488978942, now seen corresponding path program 1 times [2024-10-13 12:06:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:35,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645204312] [2024-10-13 12:06:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645204312] [2024-10-13 12:06:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645204312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:06:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961877872] [2024-10-13 12:06:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:36,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:36,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:36,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:06:36,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:06:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:36,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 12:06:36,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:06:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:06:36,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:06:36,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961877872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:06:36,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 12:06:36,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-13 12:06:36,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014996278] [2024-10-13 12:06:36,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:06:36,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:06:36,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:36,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:06:36,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:06:36,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-10-13 12:06:36,230 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) [2024-10-13 12:06:36,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:36,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-10-13 12:06:36,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:36,339 INFO L124 PetriNetUnfolderBase]: 133/256 cut-off events. [2024-10-13 12:06:36,339 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-13 12:06:36,340 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. [2024-10-13 12:06:36,342 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2024-10-13 12:06:36,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2024-10-13 12:06:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:06:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:06:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-13 12:06:36,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-10-13 12:06:36,344 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2024-10-13 12:06:36,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2024-10-13 12:06:36,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:06:36,346 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2024-10-13 12:06:36,346 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} [2024-10-13 12:06:36,346 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-10-13 12:06:36,347 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2024-10-13 12:06:36,347 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) [2024-10-13 12:06:36,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:36,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:36,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:06:36,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:36,553 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)] === [2024-10-13 12:06:36,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -488977835, now seen corresponding path program 1 times [2024-10-13 12:06:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65463448] [2024-10-13 12:06:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:36,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65463448] [2024-10-13 12:06:36,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65463448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:06:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396413287] [2024-10-13 12:06:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:36,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:36,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:36,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:06:36,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:06:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:36,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:06:36,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:06:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:36,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:06:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396413287] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:06:36,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:06:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 12:06:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019886727] [2024-10-13 12:06:36,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:06:36,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:06:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:06:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:06:36,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-13 12:06:36,765 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) [2024-10-13 12:06:36,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:36,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-13 12:06:36,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:36,904 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-10-13 12:06:36,904 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:06:36,907 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. [2024-10-13 12:06:36,911 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-10-13 12:06:36,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2024-10-13 12:06:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:06:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:06:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-13 12:06:36,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-10-13 12:06:36,915 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2024-10-13 12:06:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2024-10-13 12:06:36,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:06:36,917 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2024-10-13 12:06:36,918 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} [2024-10-13 12:06:36,918 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-10-13 12:06:36,918 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2024-10-13 12:06:36,919 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) [2024-10-13 12:06:36,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:36,919 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:36,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:06:37,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 12:06:37,121 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)] === [2024-10-13 12:06:37,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1932997219, now seen corresponding path program 2 times [2024-10-13 12:06:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:37,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620141782] [2024-10-13 12:06:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:37,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620141782] [2024-10-13 12:06:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620141782] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:06:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255806899] [2024-10-13 12:06:37,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:06:37,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:37,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:37,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:06:37,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:06:37,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:06:37,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:06:37,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:06:37,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:06:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:37,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:06:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255806899] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:06:37,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:06:37,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 12:06:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69048852] [2024-10-13 12:06:37,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:06:37,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:06:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:06:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:06:37,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-13 12:06:37,472 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) [2024-10-13 12:06:37,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:37,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-13 12:06:37,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:37,640 INFO L124 PetriNetUnfolderBase]: 277/472 cut-off events. [2024-10-13 12:06:37,640 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-13 12:06:37,642 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. [2024-10-13 12:06:37,645 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-13 12:06:37,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2024-10-13 12:06:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:06:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:06:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-10-13 12:06:37,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-10-13 12:06:37,649 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2024-10-13 12:06:37,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2024-10-13 12:06:37,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:06:37,653 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2024-10-13 12:06:37,653 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} [2024-10-13 12:06:37,654 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-10-13 12:06:37,655 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2024-10-13 12:06:37,655 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) [2024-10-13 12:06:37,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:37,655 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:37,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:06:37,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:37,856 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)] === [2024-10-13 12:06:37,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 749587747, now seen corresponding path program 3 times [2024-10-13 12:06:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602656181] [2024-10-13 12:06:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:38,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:38,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602656181] [2024-10-13 12:06:38,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602656181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:06:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476785617] [2024-10-13 12:06:38,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:06:38,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:38,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:38,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:06:38,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:06:38,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-13 12:06:38,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:06:38,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:06:38,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:06:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:38,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:06:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476785617] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:06:38,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:06:38,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-13 12:06:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336249080] [2024-10-13 12:06:38,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:06:38,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 12:06:38,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:38,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 12:06:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-13 12:06:38,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-13 12:06:38,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 25 states, 25 states have (on average 14.32) internal successors, (358), 25 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:38,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:38,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-13 12:06:38,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:38,927 INFO L124 PetriNetUnfolderBase]: 493/796 cut-off events. [2024-10-13 12:06:38,928 INFO L125 PetriNetUnfolderBase]: For 4212/4212 co-relation queries the response was YES. [2024-10-13 12:06:38,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 796 events. 493/796 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2126 event pairs, 20 based on Foata normal form. 108/902 useless extension candidates. Maximal degree in co-relation 2284. Up to 190 conditions per place. [2024-10-13 12:06:38,936 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 147 selfloop transitions, 23 changer transitions 0/180 dead transitions. [2024-10-13 12:06:38,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 180 transitions, 873 flow [2024-10-13 12:06:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 12:06:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 12:06:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 494 transitions. [2024-10-13 12:06:38,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053921568627451 [2024-10-13 12:06:38,939 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 24 states and 494 transitions. [2024-10-13 12:06:38,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 180 transitions, 873 flow [2024-10-13 12:06:38,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 180 transitions, 801 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-13 12:06:38,947 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 293 flow [2024-10-13 12:06:38,948 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=24, PETRI_FLOW=293, PETRI_PLACES=85, PETRI_TRANSITIONS=48} [2024-10-13 12:06:38,948 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-10-13 12:06:38,948 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 293 flow [2024-10-13 12:06:38,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.32) internal successors, (358), 25 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:38,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:38,949 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:38,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:06:39,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:39,154 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)] === [2024-10-13 12:06:39,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1902521693, now seen corresponding path program 4 times [2024-10-13 12:06:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695687196] [2024-10-13 12:06:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695687196] [2024-10-13 12:06:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695687196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:06:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266753604] [2024-10-13 12:06:41,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:06:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:06:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:41,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:06:41,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:06:41,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:06:41,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:06:41,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-13 12:06:41,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:06:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 210 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:43,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:06:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:06:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266753604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:06:44,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:06:44,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 84 [2024-10-13 12:06:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320796510] [2024-10-13 12:06:44,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:06:44,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-10-13 12:06:44,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-10-13 12:06:44,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1010, Invalid=6130, Unknown=0, NotChecked=0, Total=7140 [2024-10-13 12:06:45,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-13 12:06:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 293 flow. Second operand has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-13 12:06:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:07:37,075 INFO L124 PetriNetUnfolderBase]: 31510/51979 cut-off events. [2024-10-13 12:07:37,076 INFO L125 PetriNetUnfolderBase]: For 194767/194767 co-relation queries the response was YES. [2024-10-13 12:07:37,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147805 conditions, 51979 events. 31510/51979 cut-off events. For 194767/194767 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 357380 event pairs, 306 based on Foata normal form. 0/51486 useless extension candidates. Maximal degree in co-relation 147774. Up to 7717 conditions per place. [2024-10-13 12:07:37,663 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 868 selfloop transitions, 1255 changer transitions 1053/3180 dead transitions. [2024-10-13 12:07:37,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 3180 transitions, 21998 flow [2024-10-13 12:07:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2024-10-13 12:07:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2024-10-13 12:07:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 4048 transitions. [2024-10-13 12:07:37,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4526951464996645 [2024-10-13 12:07:37,688 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 293 flow. Second operand 263 states and 4048 transitions. [2024-10-13 12:07:37,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 3180 transitions, 21998 flow [2024-10-13 12:07:38,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 3180 transitions, 17336 flow, removed 1850 selfloop flow, removed 11 redundant places. [2024-10-13 12:07:38,163 INFO L231 Difference]: Finished difference. Result has 438 places, 1387 transitions, 8391 flow [2024-10-13 12:07:38,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=263, PETRI_FLOW=8391, PETRI_PLACES=438, PETRI_TRANSITIONS=1387} [2024-10-13 12:07:38,166 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 404 predicate places. [2024-10-13 12:07:38,167 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 1387 transitions, 8391 flow [2024-10-13 12:07:38,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:38,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:07:38,169 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:07:38,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 12:07:38,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:07:38,374 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)] === [2024-10-13 12:07:38,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:07:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash -630329793, now seen corresponding path program 1 times [2024-10-13 12:07:38,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:07:38,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292356661] [2024-10-13 12:07:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:07:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:07:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:07:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:07:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292356661] [2024-10-13 12:07:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292356661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:07:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337879656] [2024-10-13 12:07:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:07:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:07:40,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:07:40,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:07:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:07:40,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-13 12:07:40,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:07:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 210 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:07:41,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:07:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:07:43,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337879656] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:07:43,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:07:43,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 91 [2024-10-13 12:07:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110844230] [2024-10-13 12:07:43,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:07:43,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-10-13 12:07:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:07:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-10-13 12:07:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=7303, Unknown=0, NotChecked=0, Total=8372 [2024-10-13 12:07:44,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-13 12:07:44,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 1387 transitions, 8391 flow. Second operand has 92 states, 92 states have (on average 8.23913043478261) internal successors, (758), 92 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:44,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:07:44,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-13 12:07:44,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand