./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/fib_safe-11.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 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:44:00,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:44:00,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:44:00,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:44:00,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:44:00,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:44:00,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:44:00,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:44:00,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:44:00,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:44:00,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:44:00,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:44:00,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:44:00,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:44:00,590 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:44:00,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:44:00,591 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:44:00,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:44:00,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:44:00,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:44:00,591 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:44:00,593 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:44:00,596 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:44:00,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:44:00,597 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:44:00,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:44:00,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:44:00,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:44:00,597 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:44:00,598 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:44:00,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:44:00,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:44:00,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:44:00,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:44:00,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:44:00,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:44:00,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:44:00,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:44:00,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:44:00,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:44:00,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:44:00,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:44:00,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-11-10 17:44:00,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:44:00,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:44:00,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:44:00,835 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:44:00,839 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:44:00,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-10 17:44:02,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:44:02,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:44:02,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-10 17:44:02,417 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db97af06/3b0ee457b62d49cdb6e47d0663fa3e9c/FLAG5430a5296 [2024-11-10 17:44:02,431 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db97af06/3b0ee457b62d49cdb6e47d0663fa3e9c [2024-11-10 17:44:02,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:44:02,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:44:02,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:44:02,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:44:02,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:44:02,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce43e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02, skipping insertion in model container [2024-11-10 17:44:02,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,480 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:44:02,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:44:02,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:44:02,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:44:02,800 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:44:02,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02 WrapperNode [2024-11-10 17:44:02,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:44:02,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:44:02,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:44:02,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:44:02,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,862 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-10 17:44:02,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:44:02,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:44:02,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:44:02,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:44:02,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,884 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]. [2024-11-10 17:44:02,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,888 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:44:02,893 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:44:02,893 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:44:02,893 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:44:02,893 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (1/1) ... [2024-11-10 17:44:02,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:44:02,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:02,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 17:44:02,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 17:44:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 17:44:02,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 17:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 17:44:02,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 17:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:44:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:44:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:44:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:44:02,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:44:02,975 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:44:03,065 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:44:03,067 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:44:03,213 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:44:03,213 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:44:03,299 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:44:03,300 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:44:03,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:44:03 BoogieIcfgContainer [2024-11-10 17:44:03,300 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:44:03,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:44:03,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:44:03,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:44:03,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:44:02" (1/3) ... [2024-11-10 17:44:03,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e19585f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:44:03, skipping insertion in model container [2024-11-10 17:44:03,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:02" (2/3) ... [2024-11-10 17:44:03,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e19585f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:44:03, skipping insertion in model container [2024-11-10 17:44:03,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:44:03" (3/3) ... [2024-11-10 17:44:03,314 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-11-10 17:44:03,338 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:44:03,338 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:44:03,338 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:44:03,384 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:44:03,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 43 transitions, 94 flow [2024-11-10 17:44:03,441 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-11-10 17:44:03,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:44:03,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 8/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-10 17:44:03,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 43 transitions, 94 flow [2024-11-10 17:44:03,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 88 flow [2024-11-10 17:44:03,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:44:03,466 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;@59aed496, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:44:03,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 17:44:03,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:44:03,483 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-10 17:44:03,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:44:03,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:03,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:03,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:03,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1705527034, now seen corresponding path program 1 times [2024-11-10 17:44:03,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:03,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526336917] [2024-11-10 17:44:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:03,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526336917] [2024-11-10 17:44:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526336917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:44:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:44:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:44:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925669972] [2024-11-10 17:44:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:44:03,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:44:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:03,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:44:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:44:03,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 17:44:03,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:03,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:03,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 17:44:03,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:03,892 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-10 17:44:03,895 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 17:44:03,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 519 events. 265/519 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2572 event pairs, 183 based on Foata normal form. 114/597 useless extension candidates. Maximal degree in co-relation 922. Up to 406 conditions per place. [2024-11-10 17:44:03,903 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 22 selfloop transitions, 0 changer transitions 1/35 dead transitions. [2024-11-10 17:44:03,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 122 flow [2024-11-10 17:44:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:44:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:44:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-10 17:44:03,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-10 17:44:03,915 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 2 states and 56 transitions. [2024-11-10 17:44:03,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 122 flow [2024-11-10 17:44:03,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:44:03,919 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 72 flow [2024-11-10 17:44:03,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-10 17:44:03,923 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-10 17:44:03,923 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 72 flow [2024-11-10 17:44:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:03,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:03,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:03,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:44:03,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:03,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash 869894088, now seen corresponding path program 1 times [2024-11-10 17:44:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936280771] [2024-11-10 17:44:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936280771] [2024-11-10 17:44:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936280771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:44:03,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:44:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:44:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951104223] [2024-11-10 17:44:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:44:03,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:44:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:44:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:44:03,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:03,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:03,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:03,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:03,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:04,069 INFO L124 PetriNetUnfolderBase]: 297/567 cut-off events. [2024-11-10 17:44:04,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:44:04,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 567 events. 297/567 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2757 event pairs, 39 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 1030. Up to 353 conditions per place. [2024-11-10 17:44:04,073 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 30 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-10 17:44:04,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 154 flow [2024-11-10 17:44:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:44:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:44:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-10 17:44:04,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-10 17:44:04,075 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-11-10 17:44:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 154 flow [2024-11-10 17:44:04,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:44:04,077 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-11-10 17:44:04,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-10 17:44:04,077 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-10 17:44:04,078 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-11-10 17:44:04,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:04,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:04,078 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:04,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:44:04,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:04,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash -584403430, now seen corresponding path program 1 times [2024-11-10 17:44:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039869022] [2024-11-10 17:44:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039869022] [2024-11-10 17:44:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039869022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507520543] [2024-11-10 17:44:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:04,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:04,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:04,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:44:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:44:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:04,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 17:44:04,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 17:44:04,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:44:04,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507520543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:44:04,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:44:04,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 17:44:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790749495] [2024-11-10 17:44:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:44:04,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:44:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:44:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:44:04,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:04,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:04,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:04,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:04,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:04,275 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-10 17:44:04,276 INFO L125 PetriNetUnfolderBase]: For 32/40 co-relation queries the response was YES. [2024-11-10 17:44:04,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 519 events. 265/519 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2529 event pairs, 183 based on Foata normal form. 16/491 useless extension candidates. Maximal degree in co-relation 987. Up to 405 conditions per place. [2024-11-10 17:44:04,279 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/34 dead transitions. [2024-11-10 17:44:04,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 128 flow [2024-11-10 17:44:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:44:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:44:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-10 17:44:04,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-10 17:44:04,283 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 84 flow. Second operand 3 states and 62 transitions. [2024-11-10 17:44:04,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 128 flow [2024-11-10 17:44:04,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:44:04,285 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 80 flow [2024-11-10 17:44:04,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-10 17:44:04,285 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-10 17:44:04,285 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 80 flow [2024-11-10 17:44:04,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:04,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:04,286 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:04,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 17:44:04,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:04,488 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash -584402535, now seen corresponding path program 1 times [2024-11-10 17:44:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955667678] [2024-11-10 17:44:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955667678] [2024-11-10 17:44:04,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955667678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601746149] [2024-11-10 17:44:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:04,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:04,600 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) [2024-11-10 17:44:04,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 17:44:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:04,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 17:44:04,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:04,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601746149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:04,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:04,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 17:44:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111647812] [2024-11-10 17:44:04,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:04,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:44:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:44:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:44:04,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:04,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:04,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:04,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:04,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:04,851 INFO L124 PetriNetUnfolderBase]: 361/695 cut-off events. [2024-11-10 17:44:04,851 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-10 17:44:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 695 events. 361/695 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3359 event pairs, 39 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1352. Up to 305 conditions per place. [2024-11-10 17:44:04,855 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-10 17:44:04,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 272 flow [2024-11-10 17:44:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:44:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 17:44:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-10 17:44:04,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2024-11-10 17:44:04,857 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 80 flow. Second operand 6 states and 139 transitions. [2024-11-10 17:44:04,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 272 flow [2024-11-10 17:44:04,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:44:04,860 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 115 flow [2024-11-10 17:44:04,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-10 17:44:04,861 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-10 17:44:04,862 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 115 flow [2024-11-10 17:44:04,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:04,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:04,862 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:04,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 17:44:05,066 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,SelfDestructingSolverStorable3 [2024-11-10 17:44:05,067 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:05,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1788020337, now seen corresponding path program 2 times [2024-11-10 17:44:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:05,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478519227] [2024-11-10 17:44:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:05,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478519227] [2024-11-10 17:44:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478519227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913818526] [2024-11-10 17:44:05,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:44:05,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:05,144 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) [2024-11-10 17:44:05,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 17:44:05,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 17:44:05,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:05,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:44:05,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:05,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913818526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:05,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 17:44:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904728961] [2024-11-10 17:44:05,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:05,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 17:44:05,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 17:44:05,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:44:05,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:05,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 115 flow. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:05,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:05,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:05,491 INFO L124 PetriNetUnfolderBase]: 553/1079 cut-off events. [2024-11-10 17:44:05,491 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-10 17:44:05,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1079 events. 553/1079 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 39 based on Foata normal form. 96/1155 useless extension candidates. Maximal degree in co-relation 2393. Up to 305 conditions per place. [2024-11-10 17:44:05,498 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 101 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2024-11-10 17:44:05,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 535 flow [2024-11-10 17:44:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:44:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 17:44:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-11-10 17:44:05,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-11-10 17:44:05,500 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 115 flow. Second operand 12 states and 274 transitions. [2024-11-10 17:44:05,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 535 flow [2024-11-10 17:44:05,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 527 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 17:44:05,506 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 191 flow [2024-11-10 17:44:05,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2024-11-10 17:44:05,507 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-10 17:44:05,507 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 191 flow [2024-11-10 17:44:05,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:05,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:05,508 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:05,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 17:44:05,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:05,709 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:05,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash -406525957, now seen corresponding path program 3 times [2024-11-10 17:44:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720851586] [2024-11-10 17:44:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720851586] [2024-11-10 17:44:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720851586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241645586] [2024-11-10 17:44:05,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 17:44:05,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:05,885 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) [2024-11-10 17:44:05,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 17:44:05,950 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 17:44:05,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:05,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 17:44:05,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:05,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241645586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:06,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-10 17:44:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090008701] [2024-11-10 17:44:06,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:06,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 17:44:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 17:44:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-10 17:44:06,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:06,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 191 flow. Second operand has 25 states, 25 states have (on average 14.48) internal successors, (362), 25 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:06,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:06,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:06,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:06,584 INFO L124 PetriNetUnfolderBase]: 937/1847 cut-off events. [2024-11-10 17:44:06,584 INFO L125 PetriNetUnfolderBase]: For 13968/13968 co-relation queries the response was YES. [2024-11-10 17:44:06,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 1847 events. 937/1847 cut-off events. For 13968/13968 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9298 event pairs, 39 based on Foata normal form. 192/2019 useless extension candidates. Maximal degree in co-relation 4633. Up to 384 conditions per place. [2024-11-10 17:44:06,595 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 197 selfloop transitions, 23 changer transitions 0/230 dead transitions. [2024-11-10 17:44:06,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 230 transitions, 1079 flow [2024-11-10 17:44:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 17:44:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 17:44:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 544 transitions. [2024-11-10 17:44:06,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-11-10 17:44:06,597 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 191 flow. Second operand 24 states and 544 transitions. [2024-11-10 17:44:06,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 230 transitions, 1079 flow [2024-11-10 17:44:06,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 230 transitions, 1019 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-10 17:44:06,605 INFO L231 Difference]: Finished difference. Result has 92 places, 54 transitions, 323 flow [2024-11-10 17:44:06,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=323, PETRI_PLACES=92, PETRI_TRANSITIONS=54} [2024-11-10 17:44:06,606 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-11-10 17:44:06,606 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 54 transitions, 323 flow [2024-11-10 17:44:06,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 25 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:06,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:06,607 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:06,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 17:44:06,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:06,811 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash 138215123, now seen corresponding path program 4 times [2024-11-10 17:44:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879893772] [2024-11-10 17:44:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:07,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879893772] [2024-11-10 17:44:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879893772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:07,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116590640] [2024-11-10 17:44:07,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 17:44:07,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:07,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:07,222 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) [2024-11-10 17:44:07,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 17:44:07,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 17:44:07,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:07,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 17:44:07,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:07,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116590640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:07,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:07,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2024-11-10 17:44:07,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248517819] [2024-11-10 17:44:07,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:07,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:44:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:07,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:44:07,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-10 17:44:07,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:07,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 54 transitions, 323 flow. Second operand has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:07,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:07,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:07,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:08,026 INFO L124 PetriNetUnfolderBase]: 1001/1975 cut-off events. [2024-11-10 17:44:08,027 INFO L125 PetriNetUnfolderBase]: For 15248/15248 co-relation queries the response was YES. [2024-11-10 17:44:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1975 events. 1001/1975 cut-off events. For 15248/15248 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9865 event pairs, 39 based on Foata normal form. 32/1987 useless extension candidates. Maximal degree in co-relation 5241. Up to 416 conditions per place. [2024-11-10 17:44:08,037 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 213 selfloop transitions, 25 changer transitions 0/248 dead transitions. [2024-11-10 17:44:08,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 248 transitions, 1199 flow [2024-11-10 17:44:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 17:44:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 17:44:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 578 transitions. [2024-11-10 17:44:08,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.516994633273703 [2024-11-10 17:44:08,039 INFO L175 Difference]: Start difference. First operand has 92 places, 54 transitions, 323 flow. Second operand 26 states and 578 transitions. [2024-11-10 17:44:08,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 248 transitions, 1199 flow [2024-11-10 17:44:08,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 248 transitions, 1123 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-11-10 17:44:08,051 INFO L231 Difference]: Finished difference. Result has 108 places, 56 transitions, 323 flow [2024-11-10 17:44:08,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=323, PETRI_PLACES=108, PETRI_TRANSITIONS=56} [2024-11-10 17:44:08,052 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2024-11-10 17:44:08,052 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 56 transitions, 323 flow [2024-11-10 17:44:08,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:08,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:08,052 INFO L204 CegarLoopForPetriNet]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:08,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 17:44:08,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:08,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:44:08,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:08,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1106220809, now seen corresponding path program 5 times [2024-11-10 17:44:08,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:08,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460864913] [2024-11-10 17:44:08,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:08,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:10,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460864913] [2024-11-10 17:44:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460864913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760240917] [2024-11-10 17:44:10,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 17:44:10,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:10,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:10,503 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) [2024-11-10 17:44:10,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 17:44:10,583 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-10 17:44:10,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:10,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-10 17:44:10,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 506 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:12,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760240917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:13,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:13,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 89 [2024-11-10 17:44:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87475851] [2024-11-10 17:44:13,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:13,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-10 17:44:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-10 17:44:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1202, Invalid=6808, Unknown=0, NotChecked=0, Total=8010 [2024-11-10 17:44:13,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:13,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 56 transitions, 323 flow. Second operand has 90 states, 90 states have (on average 14.188888888888888) internal successors, (1277), 90 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:44:13,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:13,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:13,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:00,429 INFO L124 PetriNetUnfolderBase]: 36637/72778 cut-off events. [2024-11-10 17:45:00,429 INFO L125 PetriNetUnfolderBase]: For 143514/143868 co-relation queries the response was YES. [2024-11-10 17:45:00,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175768 conditions, 72778 events. 36637/72778 cut-off events. For 143514/143868 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 672365 event pairs, 82 based on Foata normal form. 0/68148 useless extension candidates. Maximal degree in co-relation 175739. Up to 14289 conditions per place. [2024-11-10 17:45:00,981 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 955 selfloop transitions, 1475 changer transitions 1141/3581 dead transitions. [2024-11-10 17:45:00,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 3581 transitions, 22576 flow [2024-11-10 17:45:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2024-11-10 17:45:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2024-11-10 17:45:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 6141 transitions. [2024-11-10 17:45:00,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4976095940361397 [2024-11-10 17:45:00,998 INFO L175 Difference]: Start difference. First operand has 108 places, 56 transitions, 323 flow. Second operand 287 states and 6141 transitions. [2024-11-10 17:45:00,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 3581 transitions, 22576 flow [2024-11-10 17:45:01,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 3581 transitions, 19682 flow, removed 270 selfloop flow, removed 23 redundant places. [2024-11-10 17:45:01,673 INFO L231 Difference]: Finished difference. Result has 481 places, 1625 transitions, 12135 flow [2024-11-10 17:45:01,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=287, PETRI_FLOW=12135, PETRI_PLACES=481, PETRI_TRANSITIONS=1625} [2024-11-10 17:45:01,674 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 441 predicate places. [2024-11-10 17:45:01,674 INFO L471 AbstractCegarLoop]: Abstraction has has 481 places, 1625 transitions, 12135 flow [2024-11-10 17:45:01,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 14.188888888888888) internal successors, (1277), 90 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:01,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:01,675 INFO L204 CegarLoopForPetriNet]: trace histogram [25, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:01,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 17:45:01,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:45:01,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 17:45:01,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1043989200, now seen corresponding path program 1 times [2024-11-10 17:45:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:01,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884028030] [2024-11-10 17:45:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884028030] [2024-11-10 17:45:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884028030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:45:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240135869] [2024-11-10 17:45:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:03,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:45:03,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:03,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:45:03,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 17:45:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:03,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-10 17:45:03,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 506 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:05,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:45:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:07,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240135869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:45:07,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:45:07,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 96 [2024-11-10 17:45:07,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839131647] [2024-11-10 17:45:07,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:45:07,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-10 17:45:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-10 17:45:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1262, Invalid=8050, Unknown=0, NotChecked=0, Total=9312 [2024-11-10 17:45:07,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:45:07,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1625 transitions, 12135 flow. Second operand has 97 states, 97 states have (on average 14.22680412371134) internal successors, (1380), 97 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:07,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:07,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:45:07,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand