./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-6.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_unsafe-6.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 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:44:51,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:44:51,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:44:51,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:44:51,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:44:51,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:44:51,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:44:51,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:44:51,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:44:51,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:44:51,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:44:51,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:44:51,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:44:51,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:44:51,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:44:51,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:44:51,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:44:51,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:44:51,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:44:51,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:44:51,588 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:44:51,589 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:44:51,589 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:44:51,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:44:51,589 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:44:51,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:44:51,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:44:51,590 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:44:51,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:44:51,591 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:44:51,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:44:51,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:44:51,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:44:51,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:44:51,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:44:51,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:44:51,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:44:51,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:44:51,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:44:51,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:44:51,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:44:51,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:44:51,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b [2024-11-10 17:44:51,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:44:51,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:44:51,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:44:51,820 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:44:51,820 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:44:51,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-6.i [2024-11-10 17:44:53,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:44:53,286 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:44:53,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-6.i [2024-11-10 17:44:53,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0c185d7/f0b537d40193491bac9f2ce885150943/FLAGd610ab805 [2024-11-10 17:44:53,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0c185d7/f0b537d40193491bac9f2ce885150943 [2024-11-10 17:44:53,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:44:53,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:44:53,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:44:53,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:44:53,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:44:53,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f16bcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53, skipping insertion in model container [2024-11-10 17:44:53,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:44:53,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:44:53,641 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:44:53,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:44:53,791 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:44:53,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53 WrapperNode [2024-11-10 17:44:53,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:44:53,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:44:53,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:44:53,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:44:53,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,835 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-10 17:44:53,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:44:53,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:44:53,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:44:53,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:44:53,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,867 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 17:44:53,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:44:53,884 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:44:53,884 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:44:53,884 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:44:53,885 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (1/1) ... [2024-11-10 17:44:53,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:44:53,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:53,914 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 17:44:53,918 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 17:44:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 17:44:53,956 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 17:44:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 17:44:53,957 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 17:44:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:44:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:44:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:44:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:44:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:44:53,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:44:53,958 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 17:44:54,062 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:44:54,064 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:44:54,187 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:44:54,187 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:44:54,261 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:44:54,261 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:44:54,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:44:54 BoogieIcfgContainer [2024-11-10 17:44:54,262 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:44:54,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:44:54,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:44:54,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:44:54,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:44:53" (1/3) ... [2024-11-10 17:44:54,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ddfa9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:44:54, skipping insertion in model container [2024-11-10 17:44:54,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:44:53" (2/3) ... [2024-11-10 17:44:54,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ddfa9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:44:54, skipping insertion in model container [2024-11-10 17:44:54,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:44:54" (3/3) ... [2024-11-10 17:44:54,272 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2024-11-10 17:44:54,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:44:54,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:44:54,285 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:44:54,316 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:44:54,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 43 transitions, 94 flow [2024-11-10 17:44:54,377 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-11-10 17:44:54,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:44:54,380 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 17:44:54,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 43 transitions, 94 flow [2024-11-10 17:44:54,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 88 flow [2024-11-10 17:44:54,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:44:54,400 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;@4b1545cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:44:54,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 17:44:54,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:44:54,411 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-10 17:44:54,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:44:54,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:54,412 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:54,413 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 17:44:54,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1705527034, now seen corresponding path program 1 times [2024-11-10 17:44:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710511070] [2024-11-10 17:44:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:54,591 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 17:44:54,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:54,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710511070] [2024-11-10 17:44:54,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710511070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:44:54,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:44:54,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:44:54,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762683320] [2024-11-10 17:44:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:44:54,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:44:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:44:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:44:54,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 17:44:54,630 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 17:44:54,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:54,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 17:44:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:54,761 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-10 17:44:54,762 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 17:44:54,766 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 17:44:54,769 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 22 selfloop transitions, 0 changer transitions 1/35 dead transitions. [2024-11-10 17:44:54,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 122 flow [2024-11-10 17:44:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:44:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:44:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-10 17:44:54,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-10 17:44:54,794 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 2 states and 56 transitions. [2024-11-10 17:44:54,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 122 flow [2024-11-10 17:44:54,797 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 17:44:54,798 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 72 flow [2024-11-10 17:44:54,799 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 17:44:54,804 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-10 17:44:54,804 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 72 flow [2024-11-10 17:44:54,805 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 17:44:54,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:54,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:54,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:44:54,806 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 17:44:54,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:54,807 INFO L85 PathProgramCache]: Analyzing trace with hash 869894088, now seen corresponding path program 1 times [2024-11-10 17:44:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054740163] [2024-11-10 17:44:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:54,901 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 17:44:54,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:54,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054740163] [2024-11-10 17:44:54,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054740163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:44:54,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:44:54,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:44:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810968575] [2024-11-10 17:44:54,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:44:54,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:44:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:44:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:44:54,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:54,908 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 17:44:54,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:54,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:54,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:55,013 INFO L124 PetriNetUnfolderBase]: 297/567 cut-off events. [2024-11-10 17:44:55,014 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:44:55,016 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 17:44:55,022 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 30 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-10 17:44:55,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 154 flow [2024-11-10 17:44:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:44:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:44:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-10 17:44:55,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-10 17:44:55,026 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-11-10 17:44:55,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 154 flow [2024-11-10 17:44:55,027 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 17:44:55,028 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-11-10 17:44:55,030 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 17:44:55,030 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-10 17:44:55,031 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-11-10 17:44:55,031 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 17:44:55,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:55,031 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 17:44:55,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:44:55,031 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 17:44:55,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash -584403430, now seen corresponding path program 1 times [2024-11-10 17:44:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932295306] [2024-11-10 17:44:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:55,117 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 17:44:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932295306] [2024-11-10 17:44:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932295306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386379605] [2024-11-10 17:44:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:55,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:55,121 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 17:44:55,122 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 17:44:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:55,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 17:44:55,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:55,260 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 17:44:55,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:44:55,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386379605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:44:55,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:44:55,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 17:44:55,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001313007] [2024-11-10 17:44:55,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:44:55,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:44:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:44:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:44:55,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:55,263 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 17:44:55,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:55,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:55,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:55,319 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-10 17:44:55,320 INFO L125 PetriNetUnfolderBase]: For 32/40 co-relation queries the response was YES. [2024-11-10 17:44:55,321 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 17:44:55,323 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/34 dead transitions. [2024-11-10 17:44:55,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 128 flow [2024-11-10 17:44:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:44:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:44:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-10 17:44:55,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-10 17:44:55,324 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 84 flow. Second operand 3 states and 62 transitions. [2024-11-10 17:44:55,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 128 flow [2024-11-10 17:44:55,325 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 17:44:55,325 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 80 flow [2024-11-10 17:44:55,326 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 17:44:55,326 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-10 17:44:55,326 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 80 flow [2024-11-10 17:44:55,326 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 17:44:55,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:55,327 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 17:44:55,340 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 17:44:55,527 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 17:44:55,532 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 17:44:55,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash -584402535, now seen corresponding path program 1 times [2024-11-10 17:44:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:55,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90529514] [2024-11-10 17:44:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:55,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:55,632 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 17:44:55,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:55,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90529514] [2024-11-10 17:44:55,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90529514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:55,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55237731] [2024-11-10 17:44:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:55,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:55,639 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 17:44:55,647 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 17:44:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:55,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 17:44:55,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:55,741 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 17:44:55,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:55,760 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 17:44:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55237731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:55,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 17:44:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079716905] [2024-11-10 17:44:55,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:55,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:44:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:44:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:44:55,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:55,763 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 17:44:55,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:55,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:55,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:55,878 INFO L124 PetriNetUnfolderBase]: 361/695 cut-off events. [2024-11-10 17:44:55,878 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-10 17:44:55,879 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 17:44:55,882 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-10 17:44:55,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 272 flow [2024-11-10 17:44:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:44:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 17:44:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-10 17:44:55,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2024-11-10 17:44:55,884 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 80 flow. Second operand 6 states and 139 transitions. [2024-11-10 17:44:55,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 272 flow [2024-11-10 17:44:55,884 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 17:44:55,885 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 115 flow [2024-11-10 17:44:55,885 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 17:44:55,886 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-10 17:44:55,886 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 115 flow [2024-11-10 17:44:55,886 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 17:44:55,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:55,886 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 17:44:55,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 17:44:56,087 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 17:44:56,088 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 17:44:56,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1788020337, now seen corresponding path program 2 times [2024-11-10 17:44:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337098878] [2024-11-10 17:44:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:56,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:56,208 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 17:44:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337098878] [2024-11-10 17:44:56,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337098878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34799094] [2024-11-10 17:44:56,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:44:56,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:56,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:56,214 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 17:44:56,222 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 17:44:56,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 17:44:56,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:56,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:44:56,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:56,322 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 17:44:56,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:56,380 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 17:44:56,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34799094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:56,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:56,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 17:44:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060373903] [2024-11-10 17:44:56,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:56,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 17:44:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 17:44:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:44:56,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:56,383 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 17:44:56,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:56,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:56,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:56,566 INFO L124 PetriNetUnfolderBase]: 553/1079 cut-off events. [2024-11-10 17:44:56,567 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-10 17:44:56,569 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 17:44:56,572 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 101 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2024-11-10 17:44:56,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 535 flow [2024-11-10 17:44:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:44:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 17:44:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-11-10 17:44:56,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-11-10 17:44:56,574 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 115 flow. Second operand 12 states and 274 transitions. [2024-11-10 17:44:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 535 flow [2024-11-10 17:44:56,579 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 17:44:56,580 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 191 flow [2024-11-10 17:44:56,580 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 17:44:56,583 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-10 17:44:56,583 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 191 flow [2024-11-10 17:44:56,584 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 17:44:56,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:56,584 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 17:44:56,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 17:44:56,784 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 17:44:56,785 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 17:44:56,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash -406525957, now seen corresponding path program 3 times [2024-11-10 17:44:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:56,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731465174] [2024-11-10 17:44:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:56,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:56,986 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 17:44:56,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731465174] [2024-11-10 17:44:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731465174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084280736] [2024-11-10 17:44:56,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 17:44:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:56,988 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 17:44:56,999 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 17:44:57,059 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 17:44:57,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:57,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 17:44:57,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:57,099 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 17:44:57,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:44:57,251 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 17:44:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084280736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:44:57,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:44:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 17 [2024-11-10 17:44:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188304131] [2024-11-10 17:44:57,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:44:57,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 17:44:57,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:44:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 17:44:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-10 17:44:57,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:44:57,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 191 flow. Second operand has 17 states, 17 states have (on average 14.764705882352942) internal successors, (251), 17 states have internal predecessors, (251), 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 17:44:57,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:44:57,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:44:57,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:44:57,494 INFO L124 PetriNetUnfolderBase]: 681/1335 cut-off events. [2024-11-10 17:44:57,494 INFO L125 PetriNetUnfolderBase]: For 6160/6160 co-relation queries the response was YES. [2024-11-10 17:44:57,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 1335 events. 681/1335 cut-off events. For 6160/6160 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6644 event pairs, 39 based on Foata normal form. 64/1379 useless extension candidates. Maximal degree in co-relation 3353. Up to 305 conditions per place. [2024-11-10 17:44:57,503 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 133 selfloop transitions, 15 changer transitions 0/158 dead transitions. [2024-11-10 17:44:57,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 158 transitions, 743 flow [2024-11-10 17:44:57,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 17:44:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 17:44:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 360 transitions. [2024-11-10 17:44:57,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-10 17:44:57,505 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 191 flow. Second operand 16 states and 360 transitions. [2024-11-10 17:44:57,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 158 transitions, 743 flow [2024-11-10 17:44:57,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 699 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-11-10 17:44:57,515 INFO L231 Difference]: Finished difference. Result has 76 places, 46 transitions, 227 flow [2024-11-10 17:44:57,515 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=16, PETRI_FLOW=227, PETRI_PLACES=76, PETRI_TRANSITIONS=46} [2024-11-10 17:44:57,517 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-11-10 17:44:57,517 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 46 transitions, 227 flow [2024-11-10 17:44:57,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.764705882352942) internal successors, (251), 17 states have internal predecessors, (251), 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 17:44:57,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:44:57,518 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:44:57,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 17:44:57,718 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 17:44:57,718 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 17:44:57,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:44:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 106586691, now seen corresponding path program 4 times [2024-11-10 17:44:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:44:57,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927989368] [2024-11-10 17:44:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:44:57,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:44:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:44:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:58,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:44:58,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927989368] [2024-11-10 17:44:58,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927989368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:44:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851095668] [2024-11-10 17:44:58,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 17:44:58,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:44:58,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:44:58,706 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 17:44:58,707 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 17:44:58,763 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 17:44:58,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:44:58,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-10 17:44:58,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:44:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 156 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:44:59,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:45:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851095668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:45:00,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:45:00,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 59 [2024-11-10 17:45:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312899393] [2024-11-10 17:45:00,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:45:00,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-10 17:45:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-10 17:45:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=3032, Unknown=0, NotChecked=0, Total=3540 [2024-11-10 17:45:00,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:45:00,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 46 transitions, 227 flow. Second operand has 60 states, 60 states have (on average 14.283333333333333) internal successors, (857), 60 states have internal predecessors, (857), 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 17:45:00,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:00,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:45:00,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:15,941 INFO L124 PetriNetUnfolderBase]: 15598/30975 cut-off events. [2024-11-10 17:45:15,941 INFO L125 PetriNetUnfolderBase]: For 42393/42661 co-relation queries the response was YES. [2024-11-10 17:45:16,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72346 conditions, 30975 events. 15598/30975 cut-off events. For 42393/42661 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 270431 event pairs, 341 based on Foata normal form. 0/28583 useless extension candidates. Maximal degree in co-relation 72327. Up to 5322 conditions per place. [2024-11-10 17:45:16,150 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 568 selfloop transitions, 575 changer transitions 701/1854 dead transitions. [2024-11-10 17:45:16,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1854 transitions, 10626 flow [2024-11-10 17:45:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2024-11-10 17:45:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2024-11-10 17:45:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 3734 transitions. [2024-11-10 17:45:16,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962126245847176 [2024-11-10 17:45:16,160 INFO L175 Difference]: Start difference. First operand has 76 places, 46 transitions, 227 flow. Second operand 175 states and 3734 transitions. [2024-11-10 17:45:16,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1854 transitions, 10626 flow [2024-11-10 17:45:16,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 1854 transitions, 9372 flow, removed 306 selfloop flow, removed 11 redundant places. [2024-11-10 17:45:16,252 INFO L231 Difference]: Finished difference. Result has 309 places, 673 transitions, 4811 flow [2024-11-10 17:45:16,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=175, PETRI_FLOW=4811, PETRI_PLACES=309, PETRI_TRANSITIONS=673} [2024-11-10 17:45:16,252 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 269 predicate places. [2024-11-10 17:45:16,253 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 673 transitions, 4811 flow [2024-11-10 17:45:16,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 14.283333333333333) internal successors, (857), 60 states have internal predecessors, (857), 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 17:45:16,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:16,254 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:16,268 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 17:45:16,457 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 17:45:16,458 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 17:45:16,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:16,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1529888548, now seen corresponding path program 1 times [2024-11-10 17:45:16,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:16,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299519764] [2024-11-10 17:45:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:17,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299519764] [2024-11-10 17:45:17,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299519764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:45:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480265700] [2024-11-10 17:45:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:45:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:17,678 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 17:45:17,683 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 17:45:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:17,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-10 17:45:17,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 156 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:18,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:45:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:19,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480265700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:45:19,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:45:19,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 66 [2024-11-10 17:45:19,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107724942] [2024-11-10 17:45:19,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:45:19,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-10 17:45:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-10 17:45:19,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=3874, Unknown=0, NotChecked=0, Total=4422 [2024-11-10 17:45:19,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 17:45:19,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 673 transitions, 4811 flow. Second operand has 67 states, 67 states have (on average 14.328358208955224) internal successors, (960), 67 states have internal predecessors, (960), 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 17:45:19,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:19,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 17:45:19,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand