./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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/weaver/popl20-figure1-alt.wvr.c -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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:37:13,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:37:13,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:37:13,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:37:13,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:37:14,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:37:14,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:37:14,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:37:14,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:37:14,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:37:14,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:37:14,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:37:14,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:37:14,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:37:14,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:37:14,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:37:14,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:37:14,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:37:14,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:37:14,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:37:14,030 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:37:14,034 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:37:14,034 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:37:14,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:37:14,035 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:37:14,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:37:14,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:37:14,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:37:14,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:37:14,036 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:37:14,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:37:14,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:37:14,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:37:14,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:37:14,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:37:14,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:37:14,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:37:14,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:37:14,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:37:14,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:37:14,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:37:14,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:37:14,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-17 03:37:14,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:37:14,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:37:14,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:37:14,312 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:37:14,313 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:37:14,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-17 03:37:15,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:37:15,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:37:15,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-17 03:37:15,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1170acb/6bfd0e4868dc430f91df5676f224f013/FLAGd3ea97354 [2024-11-17 03:37:15,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1170acb/6bfd0e4868dc430f91df5676f224f013 [2024-11-17 03:37:15,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:37:15,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:37:15,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:37:15,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:37:15,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:37:15,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:37:15" (1/1) ... [2024-11-17 03:37:15,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff0b301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:15, skipping insertion in model container [2024-11-17 03:37:15,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:37:15" (1/1) ... [2024-11-17 03:37:16,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:37:16,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:37:16,239 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:37:16,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:37:16,283 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:37:16,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16 WrapperNode [2024-11-17 03:37:16,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:37:16,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:37:16,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:37:16,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:37:16,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,320 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 67 [2024-11-17 03:37:16,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:37:16,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:37:16,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:37:16,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:37:16,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,356 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]. [2024-11-17 03:37:16,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,360 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:37:16,365 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:37:16,365 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:37:16,365 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:37:16,367 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (1/1) ... [2024-11-17 03:37:16,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:37:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:16,397 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) [2024-11-17 03:37:16,400 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 [2024-11-17 03:37:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:37:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:37:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:37:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:37:16,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:37:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:37:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:37:16,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:37:16,441 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:37:16,528 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:37:16,531 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:37:16,742 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:37:16,743 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:37:16,883 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:37:16,884 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:37:16,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:37:16 BoogieIcfgContainer [2024-11-17 03:37:16,884 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:37:16,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:37:16,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:37:16,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:37:16,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:37:15" (1/3) ... [2024-11-17 03:37:16,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c4398c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:37:16, skipping insertion in model container [2024-11-17 03:37:16,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:37:16" (2/3) ... [2024-11-17 03:37:16,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c4398c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:37:16, skipping insertion in model container [2024-11-17 03:37:16,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:37:16" (3/3) ... [2024-11-17 03:37:16,897 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-17 03:37:16,914 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:37:16,915 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:37:16,916 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:37:16,954 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:37:16,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-11-17 03:37:17,023 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-17 03:37:17,027 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:37:17,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-11-17 03:37:17,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-11-17 03:37:17,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2024-11-17 03:37:17,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:37:17,054 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;@610955cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:37:17,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:37:17,068 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:37:17,069 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-17 03:37:17,069 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:37:17,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:17,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:17,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:17,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash 78171215, now seen corresponding path program 1 times [2024-11-17 03:37:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175872100] [2024-11-17 03:37:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:17,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:17,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175872100] [2024-11-17 03:37:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175872100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:17,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:37:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256524323] [2024-11-17 03:37:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:17,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:37:17,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:37:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:37:17,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-17 03:37:17,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-17 03:37:17,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:17,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-17 03:37:17,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:17,393 INFO L124 PetriNetUnfolderBase]: 74/142 cut-off events. [2024-11-17 03:37:17,393 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 03:37:17,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 142 events. 74/142 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 516 event pairs, 53 based on Foata normal form. 22/150 useless extension candidates. Maximal degree in co-relation 251. Up to 131 conditions per place. [2024-11-17 03:37:17,399 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 17 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-17 03:37:17,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 92 flow [2024-11-17 03:37:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:37:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:37:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2024-11-17 03:37:17,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-17 03:37:17,413 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 2 states and 38 transitions. [2024-11-17 03:37:17,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 92 flow [2024-11-17 03:37:17,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:37:17,419 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 50 flow [2024-11-17 03:37:17,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-17 03:37:17,428 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-11-17 03:37:17,428 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 50 flow [2024-11-17 03:37:17,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-17 03:37:17,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:17,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:17,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:37:17,430 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:17,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1622702891, now seen corresponding path program 1 times [2024-11-17 03:37:17,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:17,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721694823] [2024-11-17 03:37:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:17,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721694823] [2024-11-17 03:37:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721694823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:37:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597730395] [2024-11-17 03:37:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:18,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:37:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:18,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:37:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:37:18,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-17 03:37:18,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 50 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:18,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:18,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-17 03:37:18,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:18,345 INFO L124 PetriNetUnfolderBase]: 148/323 cut-off events. [2024-11-17 03:37:18,345 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:37:18,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 323 events. 148/323 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1422 event pairs, 17 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 607. Up to 161 conditions per place. [2024-11-17 03:37:18,349 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 38 selfloop transitions, 5 changer transitions 23/70 dead transitions. [2024-11-17 03:37:18,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 70 transitions, 286 flow [2024-11-17 03:37:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:37:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:37:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-11-17 03:37:18,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-11-17 03:37:18,353 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 50 flow. Second operand 12 states and 157 transitions. [2024-11-17 03:37:18,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 70 transitions, 286 flow [2024-11-17 03:37:18,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:37:18,358 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 112 flow [2024-11-17 03:37:18,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2024-11-17 03:37:18,359 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-11-17 03:37:18,359 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 112 flow [2024-11-17 03:37:18,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:18,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:18,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:18,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:37:18,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:18,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1383768345, now seen corresponding path program 2 times [2024-11-17 03:37:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279007449] [2024-11-17 03:37:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:18,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279007449] [2024-11-17 03:37:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279007449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:18,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:18,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:37:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961991548] [2024-11-17 03:37:18,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:18,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:37:18,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:37:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:37:18,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-17 03:37:18,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:18,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:18,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-17 03:37:18,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:18,858 INFO L124 PetriNetUnfolderBase]: 146/296 cut-off events. [2024-11-17 03:37:18,859 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2024-11-17 03:37:18,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 296 events. 146/296 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1195 event pairs, 37 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 934. Up to 165 conditions per place. [2024-11-17 03:37:18,863 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 13 changer transitions 16/71 dead transitions. [2024-11-17 03:37:18,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 438 flow [2024-11-17 03:37:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:37:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:37:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-11-17 03:37:18,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-11-17 03:37:18,866 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 112 flow. Second operand 12 states and 152 transitions. [2024-11-17 03:37:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 438 flow [2024-11-17 03:37:18,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 404 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-17 03:37:18,880 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 211 flow [2024-11-17 03:37:18,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=211, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2024-11-17 03:37:18,881 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-11-17 03:37:18,881 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 211 flow [2024-11-17 03:37:18,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:18,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:18,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:18,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:37:18,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:18,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1593487203, now seen corresponding path program 3 times [2024-11-17 03:37:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:18,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121281587] [2024-11-17 03:37:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121281587] [2024-11-17 03:37:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121281587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:37:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905417259] [2024-11-17 03:37:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:19,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:37:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:37:19,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:37:19,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-17 03:37:19,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:19,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:19,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-17 03:37:19,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:19,460 INFO L124 PetriNetUnfolderBase]: 162/347 cut-off events. [2024-11-17 03:37:19,460 INFO L125 PetriNetUnfolderBase]: For 811/821 co-relation queries the response was YES. [2024-11-17 03:37:19,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 347 events. 162/347 cut-off events. For 811/821 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1565 event pairs, 29 based on Foata normal form. 7/353 useless extension candidates. Maximal degree in co-relation 1194. Up to 169 conditions per place. [2024-11-17 03:37:19,464 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 19 changer transitions 13/74 dead transitions. [2024-11-17 03:37:19,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 545 flow [2024-11-17 03:37:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:37:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:37:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-11-17 03:37:19,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-11-17 03:37:19,466 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 211 flow. Second operand 11 states and 139 transitions. [2024-11-17 03:37:19,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 545 flow [2024-11-17 03:37:19,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 499 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-11-17 03:37:19,473 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 338 flow [2024-11-17 03:37:19,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=338, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2024-11-17 03:37:19,477 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-11-17 03:37:19,477 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 338 flow [2024-11-17 03:37:19,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:19,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:19,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:19,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:37:19,479 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:19,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1996763043, now seen corresponding path program 4 times [2024-11-17 03:37:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:19,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105676200] [2024-11-17 03:37:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:19,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:19,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:19,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105676200] [2024-11-17 03:37:19,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105676200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:19,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:19,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:37:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74267752] [2024-11-17 03:37:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:19,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:37:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:37:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:37:19,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-17 03:37:19,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:19,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:19,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-17 03:37:19,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:19,909 INFO L124 PetriNetUnfolderBase]: 157/329 cut-off events. [2024-11-17 03:37:19,909 INFO L125 PetriNetUnfolderBase]: For 932/940 co-relation queries the response was YES. [2024-11-17 03:37:19,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 329 events. 157/329 cut-off events. For 932/940 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1422 event pairs, 42 based on Foata normal form. 5/331 useless extension candidates. Maximal degree in co-relation 1243. Up to 169 conditions per place. [2024-11-17 03:37:19,913 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 37 selfloop transitions, 23 changer transitions 12/76 dead transitions. [2024-11-17 03:37:19,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 76 transitions, 641 flow [2024-11-17 03:37:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:37:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:37:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-11-17 03:37:19,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-11-17 03:37:19,915 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 338 flow. Second operand 10 states and 131 transitions. [2024-11-17 03:37:19,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 76 transitions, 641 flow [2024-11-17 03:37:19,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 622 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-17 03:37:19,922 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 453 flow [2024-11-17 03:37:19,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=453, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2024-11-17 03:37:19,922 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-11-17 03:37:19,922 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 453 flow [2024-11-17 03:37:19,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:19,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:19,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:19,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:37:19,924 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:19,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash 438780909, now seen corresponding path program 5 times [2024-11-17 03:37:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405734033] [2024-11-17 03:37:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:20,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:20,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405734033] [2024-11-17 03:37:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405734033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:20,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:20,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:37:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648474981] [2024-11-17 03:37:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:20,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:37:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:37:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:37:20,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-17 03:37:20,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:20,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:20,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-17 03:37:20,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:20,317 INFO L124 PetriNetUnfolderBase]: 150/324 cut-off events. [2024-11-17 03:37:20,318 INFO L125 PetriNetUnfolderBase]: For 1218/1228 co-relation queries the response was YES. [2024-11-17 03:37:20,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 324 events. 150/324 cut-off events. For 1218/1228 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1410 event pairs, 38 based on Foata normal form. 7/330 useless extension candidates. Maximal degree in co-relation 1310. Up to 171 conditions per place. [2024-11-17 03:37:20,321 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 19 changer transitions 13/75 dead transitions. [2024-11-17 03:37:20,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 723 flow [2024-11-17 03:37:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:37:20,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:37:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-11-17 03:37:20,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-17 03:37:20,323 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 453 flow. Second operand 10 states and 129 transitions. [2024-11-17 03:37:20,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 723 flow [2024-11-17 03:37:20,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 674 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-17 03:37:20,330 INFO L231 Difference]: Finished difference. Result has 76 places, 49 transitions, 441 flow [2024-11-17 03:37:20,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=76, PETRI_TRANSITIONS=49} [2024-11-17 03:37:20,330 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-11-17 03:37:20,331 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 49 transitions, 441 flow [2024-11-17 03:37:20,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:20,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:20,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:20,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:37:20,332 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:20,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:20,332 INFO L85 PathProgramCache]: Analyzing trace with hash 138702189, now seen corresponding path program 6 times [2024-11-17 03:37:20,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:20,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285361101] [2024-11-17 03:37:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:20,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:20,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:20,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285361101] [2024-11-17 03:37:20,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285361101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:37:20,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:37:20,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:37:20,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701300981] [2024-11-17 03:37:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:37:20,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:37:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:37:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:37:20,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-17 03:37:20,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 49 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-17 03:37:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:20,730 INFO L124 PetriNetUnfolderBase]: 139/290 cut-off events. [2024-11-17 03:37:20,730 INFO L125 PetriNetUnfolderBase]: For 1211/1219 co-relation queries the response was YES. [2024-11-17 03:37:20,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 290 events. 139/290 cut-off events. For 1211/1219 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1175 event pairs, 40 based on Foata normal form. 5/292 useless extension candidates. Maximal degree in co-relation 1161. Up to 171 conditions per place. [2024-11-17 03:37:20,734 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 28 selfloop transitions, 19 changer transitions 19/70 dead transitions. [2024-11-17 03:37:20,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 681 flow [2024-11-17 03:37:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:37:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:37:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-11-17 03:37:20,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-17 03:37:20,735 INFO L175 Difference]: Start difference. First operand has 76 places, 49 transitions, 441 flow. Second operand 11 states and 135 transitions. [2024-11-17 03:37:20,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 70 transitions, 681 flow [2024-11-17 03:37:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 623 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-17 03:37:20,742 INFO L231 Difference]: Finished difference. Result has 76 places, 44 transitions, 385 flow [2024-11-17 03:37:20,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=385, PETRI_PLACES=76, PETRI_TRANSITIONS=44} [2024-11-17 03:37:20,743 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-11-17 03:37:20,743 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 44 transitions, 385 flow [2024-11-17 03:37:20,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 03:37:20,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:20,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:20,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:37:20,744 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:20,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1889552805, now seen corresponding path program 1 times [2024-11-17 03:37:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:20,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960763575] [2024-11-17 03:37:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:20,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960763575] [2024-11-17 03:37:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960763575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585129394] [2024-11-17 03:37:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:20,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:20,983 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) [2024-11-17 03:37:20,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:37:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:21,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:21,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:21,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:21,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585129394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:21,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:21,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:21,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590811367] [2024-11-17 03:37:21,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:21,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:21,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:21,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:21,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:21,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:21,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 44 transitions, 385 flow. Second operand has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2024-11-17 03:37:21,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:21,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:21,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:23,721 INFO L124 PetriNetUnfolderBase]: 636/1213 cut-off events. [2024-11-17 03:37:23,721 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-17 03:37:23,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 1213 events. 636/1213 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6332 event pairs, 18 based on Foata normal form. 30/1243 useless extension candidates. Maximal degree in co-relation 3922. Up to 289 conditions per place. [2024-11-17 03:37:23,732 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 133 selfloop transitions, 171 changer transitions 35/342 dead transitions. [2024-11-17 03:37:23,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 342 transitions, 2409 flow [2024-11-17 03:37:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-17 03:37:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-17 03:37:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 686 transitions. [2024-11-17 03:37:23,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38757062146892657 [2024-11-17 03:37:23,735 INFO L175 Difference]: Start difference. First operand has 76 places, 44 transitions, 385 flow. Second operand 59 states and 686 transitions. [2024-11-17 03:37:23,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 342 transitions, 2409 flow [2024-11-17 03:37:23,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 342 transitions, 2236 flow, removed 36 selfloop flow, removed 14 redundant places. [2024-11-17 03:37:23,747 INFO L231 Difference]: Finished difference. Result has 133 places, 204 transitions, 1701 flow [2024-11-17 03:37:23,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1701, PETRI_PLACES=133, PETRI_TRANSITIONS=204} [2024-11-17 03:37:23,749 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-11-17 03:37:23,750 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 204 transitions, 1701 flow [2024-11-17 03:37:23,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2024-11-17 03:37:23,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:23,750 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:23,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:37:23,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:23,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:23,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1261278121, now seen corresponding path program 2 times [2024-11-17 03:37:23,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:23,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769683917] [2024-11-17 03:37:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:24,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769683917] [2024-11-17 03:37:24,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769683917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205184101] [2024-11-17 03:37:24,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:37:24,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:24,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:24,139 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) [2024-11-17 03:37:24,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:37:24,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:37:24,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:24,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:24,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:24,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205184101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:24,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208260427] [2024-11-17 03:37:24,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:24,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:24,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:24,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 204 transitions, 1701 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:24,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:24,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:24,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:25,295 INFO L124 PetriNetUnfolderBase]: 704/1353 cut-off events. [2024-11-17 03:37:25,295 INFO L125 PetriNetUnfolderBase]: For 7024/7024 co-relation queries the response was YES. [2024-11-17 03:37:25,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6110 conditions, 1353 events. 704/1353 cut-off events. For 7024/7024 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7306 event pairs, 35 based on Foata normal form. 2/1355 useless extension candidates. Maximal degree in co-relation 6072. Up to 675 conditions per place. [2024-11-17 03:37:25,308 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 148 selfloop transitions, 146 changer transitions 23/320 dead transitions. [2024-11-17 03:37:25,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 320 transitions, 3117 flow [2024-11-17 03:37:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 03:37:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-17 03:37:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 258 transitions. [2024-11-17 03:37:25,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3739130434782609 [2024-11-17 03:37:25,310 INFO L175 Difference]: Start difference. First operand has 133 places, 204 transitions, 1701 flow. Second operand 23 states and 258 transitions. [2024-11-17 03:37:25,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 320 transitions, 3117 flow [2024-11-17 03:37:25,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 320 transitions, 2565 flow, removed 263 selfloop flow, removed 6 redundant places. [2024-11-17 03:37:25,346 INFO L231 Difference]: Finished difference. Result has 147 places, 251 transitions, 2154 flow [2024-11-17 03:37:25,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2154, PETRI_PLACES=147, PETRI_TRANSITIONS=251} [2024-11-17 03:37:25,346 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-11-17 03:37:25,347 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 251 transitions, 2154 flow [2024-11-17 03:37:25,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:25,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:25,347 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:25,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:37:25,547 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,SelfDestructingSolverStorable8 [2024-11-17 03:37:25,548 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:25,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1805567107, now seen corresponding path program 3 times [2024-11-17 03:37:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272166027] [2024-11-17 03:37:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272166027] [2024-11-17 03:37:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272166027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43284938] [2024-11-17 03:37:25,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:37:25,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:25,770 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) [2024-11-17 03:37:25,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:37:25,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:37:25,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:25,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:25,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:26,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43284938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:26,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-17 03:37:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424785590] [2024-11-17 03:37:26,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:26,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:37:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:37:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:37:26,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:26,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 251 transitions, 2154 flow. Second operand has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:26,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:26,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:26,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:27,805 INFO L124 PetriNetUnfolderBase]: 1181/2329 cut-off events. [2024-11-17 03:37:27,805 INFO L125 PetriNetUnfolderBase]: For 12973/12973 co-relation queries the response was YES. [2024-11-17 03:37:27,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10617 conditions, 2329 events. 1181/2329 cut-off events. For 12973/12973 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14592 event pairs, 42 based on Foata normal form. 32/2361 useless extension candidates. Maximal degree in co-relation 10577. Up to 567 conditions per place. [2024-11-17 03:37:27,828 INFO L140 encePairwiseOnDemand]: 16/30 looper letters, 277 selfloop transitions, 291 changer transitions 23/594 dead transitions. [2024-11-17 03:37:27,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 594 transitions, 5870 flow [2024-11-17 03:37:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-17 03:37:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-17 03:37:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 605 transitions. [2024-11-17 03:37:27,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-11-17 03:37:27,832 INFO L175 Difference]: Start difference. First operand has 147 places, 251 transitions, 2154 flow. Second operand 51 states and 605 transitions. [2024-11-17 03:37:27,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 594 transitions, 5870 flow [2024-11-17 03:37:27,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 594 transitions, 5707 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-11-17 03:37:27,898 INFO L231 Difference]: Finished difference. Result has 204 places, 393 transitions, 4183 flow [2024-11-17 03:37:27,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=4183, PETRI_PLACES=204, PETRI_TRANSITIONS=393} [2024-11-17 03:37:27,899 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-11-17 03:37:27,899 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 393 transitions, 4183 flow [2024-11-17 03:37:27,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:27,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:27,901 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:27,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:37:28,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:28,102 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:28,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1786572797, now seen corresponding path program 4 times [2024-11-17 03:37:28,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:28,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602100706] [2024-11-17 03:37:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:28,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:28,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:28,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602100706] [2024-11-17 03:37:28,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602100706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:28,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801975282] [2024-11-17 03:37:28,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:37:28,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:28,293 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) [2024-11-17 03:37:28,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:37:28,342 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:37:28,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:28,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:28,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:28,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801975282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:28,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:28,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-17 03:37:28,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147479089] [2024-11-17 03:37:28,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:28,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:37:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:37:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:37:28,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:28,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 393 transitions, 4183 flow. Second operand has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:28,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:28,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:28,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:29,921 INFO L124 PetriNetUnfolderBase]: 1344/2659 cut-off events. [2024-11-17 03:37:29,921 INFO L125 PetriNetUnfolderBase]: For 24466/24466 co-relation queries the response was YES. [2024-11-17 03:37:29,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14480 conditions, 2659 events. 1344/2659 cut-off events. For 24466/24466 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17474 event pairs, 81 based on Foata normal form. 2/2661 useless extension candidates. Maximal degree in co-relation 14423. Up to 1129 conditions per place. [2024-11-17 03:37:29,955 INFO L140 encePairwiseOnDemand]: 16/30 looper letters, 250 selfloop transitions, 298 changer transitions 18/569 dead transitions. [2024-11-17 03:37:29,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 569 transitions, 6824 flow [2024-11-17 03:37:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-17 03:37:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-17 03:37:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 416 transitions. [2024-11-17 03:37:29,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-11-17 03:37:29,958 INFO L175 Difference]: Start difference. First operand has 204 places, 393 transitions, 4183 flow. Second operand 36 states and 416 transitions. [2024-11-17 03:37:29,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 569 transitions, 6824 flow [2024-11-17 03:37:30,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 569 transitions, 6107 flow, removed 130 selfloop flow, removed 9 redundant places. [2024-11-17 03:37:30,093 INFO L231 Difference]: Finished difference. Result has 235 places, 439 transitions, 4974 flow [2024-11-17 03:37:30,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4974, PETRI_PLACES=235, PETRI_TRANSITIONS=439} [2024-11-17 03:37:30,094 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-11-17 03:37:30,094 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 439 transitions, 4974 flow [2024-11-17 03:37:30,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:30,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:30,095 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:30,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:37:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:30,300 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:30,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash 739370199, now seen corresponding path program 5 times [2024-11-17 03:37:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:30,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134602518] [2024-11-17 03:37:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:30,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134602518] [2024-11-17 03:37:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134602518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630064143] [2024-11-17 03:37:30,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:37:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:30,484 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) [2024-11-17 03:37:30,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:37:30,527 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:37:30,527 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:30,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:30,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:30,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630064143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:30,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-17 03:37:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593260970] [2024-11-17 03:37:30,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:30,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:37:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:37:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:37:30,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:30,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 439 transitions, 4974 flow. Second operand has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:30,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:30,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:30,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:33,111 INFO L124 PetriNetUnfolderBase]: 1891/3642 cut-off events. [2024-11-17 03:37:33,112 INFO L125 PetriNetUnfolderBase]: For 40765/40775 co-relation queries the response was YES. [2024-11-17 03:37:33,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20797 conditions, 3642 events. 1891/3642 cut-off events. For 40765/40775 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25029 event pairs, 88 based on Foata normal form. 6/3648 useless extension candidates. Maximal degree in co-relation 20736. Up to 906 conditions per place. [2024-11-17 03:37:33,156 INFO L140 encePairwiseOnDemand]: 16/30 looper letters, 297 selfloop transitions, 539 changer transitions 28/867 dead transitions. [2024-11-17 03:37:33,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 867 transitions, 10877 flow [2024-11-17 03:37:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-17 03:37:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-17 03:37:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 791 transitions. [2024-11-17 03:37:33,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3662037037037037 [2024-11-17 03:37:33,164 INFO L175 Difference]: Start difference. First operand has 235 places, 439 transitions, 4974 flow. Second operand 72 states and 791 transitions. [2024-11-17 03:37:33,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 867 transitions, 10877 flow [2024-11-17 03:37:33,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 867 transitions, 10632 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-11-17 03:37:33,301 INFO L231 Difference]: Finished difference. Result has 321 places, 653 transitions, 8982 flow [2024-11-17 03:37:33,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4761, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=8982, PETRI_PLACES=321, PETRI_TRANSITIONS=653} [2024-11-17 03:37:33,302 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-11-17 03:37:33,302 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 653 transitions, 8982 flow [2024-11-17 03:37:33,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:33,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:33,303 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:33,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:37:33,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-17 03:37:33,504 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:33,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1566836539, now seen corresponding path program 6 times [2024-11-17 03:37:33,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:33,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237130501] [2024-11-17 03:37:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:33,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:33,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237130501] [2024-11-17 03:37:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237130501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220577261] [2024-11-17 03:37:33,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 03:37:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:33,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:33,679 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) [2024-11-17 03:37:33,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:37:33,719 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-17 03:37:33,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:33,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:33,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:33,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220577261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:34,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:34,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-17 03:37:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654816645] [2024-11-17 03:37:34,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:34,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:37:34,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:37:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:37:34,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:34,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 653 transitions, 8982 flow. Second operand has 24 states, 24 states have (on average 7.916666666666667) internal successors, (190), 24 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:37:34,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:34,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:34,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:36,878 INFO L124 PetriNetUnfolderBase]: 2278/4450 cut-off events. [2024-11-17 03:37:36,878 INFO L125 PetriNetUnfolderBase]: For 91497/91497 co-relation queries the response was YES. [2024-11-17 03:37:36,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31093 conditions, 4450 events. 2278/4450 cut-off events. For 91497/91497 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 32447 event pairs, 77 based on Foata normal form. 2/4452 useless extension candidates. Maximal degree in co-relation 31005. Up to 1129 conditions per place. [2024-11-17 03:37:36,936 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 307 selfloop transitions, 683 changer transitions 23/1016 dead transitions. [2024-11-17 03:37:36,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1016 transitions, 15318 flow [2024-11-17 03:37:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-17 03:37:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-11-17 03:37:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 850 transitions. [2024-11-17 03:37:36,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-11-17 03:37:36,939 INFO L175 Difference]: Start difference. First operand has 321 places, 653 transitions, 8982 flow. Second operand 75 states and 850 transitions. [2024-11-17 03:37:36,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1016 transitions, 15318 flow [2024-11-17 03:37:37,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1016 transitions, 14680 flow, removed 215 selfloop flow, removed 11 redundant places. [2024-11-17 03:37:37,502 INFO L231 Difference]: Finished difference. Result has 401 places, 796 transitions, 12333 flow [2024-11-17 03:37:37,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=8456, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=12333, PETRI_PLACES=401, PETRI_TRANSITIONS=796} [2024-11-17 03:37:37,503 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-11-17 03:37:37,503 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 796 transitions, 12333 flow [2024-11-17 03:37:37,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.916666666666667) internal successors, (190), 24 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:37:37,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:37,503 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:37,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 03:37:37,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:37,704 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:37,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1282485691, now seen corresponding path program 7 times [2024-11-17 03:37:37,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:37,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896265336] [2024-11-17 03:37:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:37,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896265336] [2024-11-17 03:37:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896265336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25195172] [2024-11-17 03:37:37,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-17 03:37:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:37,884 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) [2024-11-17 03:37:37,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:37:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:37,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:37,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:38,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25195172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:38,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:38,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-17 03:37:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377896309] [2024-11-17 03:37:38,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:38,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:37:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:37:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:37:38,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:38,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 796 transitions, 12333 flow. Second operand has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:38,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:38,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:38,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:39,512 INFO L124 PetriNetUnfolderBase]: 2283/4482 cut-off events. [2024-11-17 03:37:39,513 INFO L125 PetriNetUnfolderBase]: For 113532/113542 co-relation queries the response was YES. [2024-11-17 03:37:39,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34713 conditions, 4482 events. 2283/4482 cut-off events. For 113532/113542 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 32831 event pairs, 125 based on Foata normal form. 7/4489 useless extension candidates. Maximal degree in co-relation 34608. Up to 2458 conditions per place. [2024-11-17 03:37:39,574 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 317 selfloop transitions, 524 changer transitions 20/864 dead transitions. [2024-11-17 03:37:39,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 864 transitions, 14812 flow [2024-11-17 03:37:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 03:37:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 03:37:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 241 transitions. [2024-11-17 03:37:39,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825396825396825 [2024-11-17 03:37:39,576 INFO L175 Difference]: Start difference. First operand has 401 places, 796 transitions, 12333 flow. Second operand 21 states and 241 transitions. [2024-11-17 03:37:39,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 864 transitions, 14812 flow [2024-11-17 03:37:40,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 864 transitions, 13966 flow, removed 145 selfloop flow, removed 33 redundant places. [2024-11-17 03:37:40,344 INFO L231 Difference]: Finished difference. Result has 384 places, 805 transitions, 13239 flow [2024-11-17 03:37:40,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=11577, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13239, PETRI_PLACES=384, PETRI_TRANSITIONS=805} [2024-11-17 03:37:40,345 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-11-17 03:37:40,345 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 805 transitions, 13239 flow [2024-11-17 03:37:40,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.958333333333333) internal successors, (191), 24 states have internal predecessors, (191), 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) [2024-11-17 03:37:40,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:40,346 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:40,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 03:37:40,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:40,547 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:40,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1762415101, now seen corresponding path program 8 times [2024-11-17 03:37:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:40,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274641631] [2024-11-17 03:37:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:40,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274641631] [2024-11-17 03:37:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274641631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710029502] [2024-11-17 03:37:40,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:37:40,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:40,703 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:37:40,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 03:37:40,744 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:37:40,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:40,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:40,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:40,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710029502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:41,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:41,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:41,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644723116] [2024-11-17 03:37:41,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:41,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:41,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:41,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 805 transitions, 13239 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:41,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:41,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:41,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:42,566 INFO L124 PetriNetUnfolderBase]: 2289/4499 cut-off events. [2024-11-17 03:37:42,566 INFO L125 PetriNetUnfolderBase]: For 91833/91833 co-relation queries the response was YES. [2024-11-17 03:37:42,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34616 conditions, 4499 events. 2289/4499 cut-off events. For 91833/91833 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33029 event pairs, 140 based on Foata normal form. 3/4502 useless extension candidates. Maximal degree in co-relation 34515. Up to 2521 conditions per place. [2024-11-17 03:37:42,609 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 314 selfloop transitions, 545 changer transitions 24/886 dead transitions. [2024-11-17 03:37:42,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 886 transitions, 15837 flow [2024-11-17 03:37:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 03:37:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-17 03:37:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 307 transitions. [2024-11-17 03:37:42,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36547619047619045 [2024-11-17 03:37:42,610 INFO L175 Difference]: Start difference. First operand has 384 places, 805 transitions, 13239 flow. Second operand 28 states and 307 transitions. [2024-11-17 03:37:42,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 886 transitions, 15837 flow [2024-11-17 03:37:43,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 886 transitions, 15620 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-11-17 03:37:43,182 INFO L231 Difference]: Finished difference. Result has 404 places, 813 transitions, 14929 flow [2024-11-17 03:37:43,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=13012, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14929, PETRI_PLACES=404, PETRI_TRANSITIONS=813} [2024-11-17 03:37:43,183 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-11-17 03:37:43,183 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 813 transitions, 14929 flow [2024-11-17 03:37:43,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:43,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:43,183 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:43,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 03:37:43,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 03:37:43,384 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:43,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash 712027897, now seen corresponding path program 9 times [2024-11-17 03:37:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495548688] [2024-11-17 03:37:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495548688] [2024-11-17 03:37:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495548688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756569364] [2024-11-17 03:37:43,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:37:43,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:43,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:43,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:37:43,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 03:37:43,621 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:37:43,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:43,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:43,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:43,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756569364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:44,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402744402] [2024-11-17 03:37:44,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:44,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:44,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:44,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 813 transitions, 14929 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:44,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:44,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:44,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:45,556 INFO L124 PetriNetUnfolderBase]: 2314/4547 cut-off events. [2024-11-17 03:37:45,557 INFO L125 PetriNetUnfolderBase]: For 104093/104103 co-relation queries the response was YES. [2024-11-17 03:37:45,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37611 conditions, 4547 events. 2314/4547 cut-off events. For 104093/104103 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 33420 event pairs, 134 based on Foata normal form. 6/4552 useless extension candidates. Maximal degree in co-relation 37506. Up to 2459 conditions per place. [2024-11-17 03:37:45,606 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 314 selfloop transitions, 554 changer transitions 18/889 dead transitions. [2024-11-17 03:37:45,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 889 transitions, 17513 flow [2024-11-17 03:37:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 03:37:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-17 03:37:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 294 transitions. [2024-11-17 03:37:45,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-11-17 03:37:45,607 INFO L175 Difference]: Start difference. First operand has 404 places, 813 transitions, 14929 flow. Second operand 27 states and 294 transitions. [2024-11-17 03:37:45,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 889 transitions, 17513 flow [2024-11-17 03:37:46,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 889 transitions, 17105 flow, removed 21 selfloop flow, removed 21 redundant places. [2024-11-17 03:37:46,236 INFO L231 Difference]: Finished difference. Result has 408 places, 827 transitions, 16335 flow [2024-11-17 03:37:46,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=14549, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=540, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=16335, PETRI_PLACES=408, PETRI_TRANSITIONS=827} [2024-11-17 03:37:46,238 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-11-17 03:37:46,238 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 827 transitions, 16335 flow [2024-11-17 03:37:46,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:46,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:46,238 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:46,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 03:37:46,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 03:37:46,439 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:46,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1035710939, now seen corresponding path program 10 times [2024-11-17 03:37:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:46,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600066122] [2024-11-17 03:37:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:46,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600066122] [2024-11-17 03:37:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600066122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428395227] [2024-11-17 03:37:46,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:37:46,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:46,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:37:46,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 03:37:46,662 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:37:46,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:46,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:46,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:46,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428395227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:47,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996916934] [2024-11-17 03:37:47,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:47,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:47,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:47,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 827 transitions, 16335 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:47,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:47,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:47,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:48,551 INFO L124 PetriNetUnfolderBase]: 2336/4603 cut-off events. [2024-11-17 03:37:48,551 INFO L125 PetriNetUnfolderBase]: For 114860/114870 co-relation queries the response was YES. [2024-11-17 03:37:48,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39742 conditions, 4603 events. 2336/4603 cut-off events. For 114860/114870 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 33970 event pairs, 135 based on Foata normal form. 2/4604 useless extension candidates. Maximal degree in co-relation 39636. Up to 2492 conditions per place. [2024-11-17 03:37:48,597 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 331 selfloop transitions, 545 changer transitions 18/897 dead transitions. [2024-11-17 03:37:48,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 897 transitions, 18872 flow [2024-11-17 03:37:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 03:37:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-17 03:37:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 286 transitions. [2024-11-17 03:37:48,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3530864197530864 [2024-11-17 03:37:48,598 INFO L175 Difference]: Start difference. First operand has 408 places, 827 transitions, 16335 flow. Second operand 27 states and 286 transitions. [2024-11-17 03:37:48,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 897 transitions, 18872 flow [2024-11-17 03:37:49,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 897 transitions, 18511 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-11-17 03:37:49,135 INFO L231 Difference]: Finished difference. Result has 425 places, 836 transitions, 17702 flow [2024-11-17 03:37:49,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=15980, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17702, PETRI_PLACES=425, PETRI_TRANSITIONS=836} [2024-11-17 03:37:49,136 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-11-17 03:37:49,136 INFO L471 AbstractCegarLoop]: Abstraction has has 425 places, 836 transitions, 17702 flow [2024-11-17 03:37:49,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:49,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:49,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:49,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 03:37:49,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 03:37:49,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:49,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1956504413, now seen corresponding path program 11 times [2024-11-17 03:37:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626048938] [2024-11-17 03:37:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626048938] [2024-11-17 03:37:49,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626048938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906438633] [2024-11-17 03:37:49,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:37:49,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:49,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:49,490 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:37:49,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 03:37:49,528 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:37:49,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:49,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:49,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:49,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:49,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906438633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:49,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:49,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:49,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52378305] [2024-11-17 03:37:49,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:49,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:49,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:49,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:49,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:49,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:49,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 836 transitions, 17702 flow. Second operand has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2024-11-17 03:37:49,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:49,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:49,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:51,514 INFO L124 PetriNetUnfolderBase]: 2353/4645 cut-off events. [2024-11-17 03:37:51,514 INFO L125 PetriNetUnfolderBase]: For 132036/132036 co-relation queries the response was YES. [2024-11-17 03:37:51,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41948 conditions, 4645 events. 2353/4645 cut-off events. For 132036/132036 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34348 event pairs, 122 based on Foata normal form. 1/4645 useless extension candidates. Maximal degree in co-relation 41839. Up to 2737 conditions per place. [2024-11-17 03:37:51,701 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 330 selfloop transitions, 557 changer transitions 11/901 dead transitions. [2024-11-17 03:37:51,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 901 transitions, 20235 flow [2024-11-17 03:37:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 03:37:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-17 03:37:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 291 transitions. [2024-11-17 03:37:51,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-11-17 03:37:51,708 INFO L175 Difference]: Start difference. First operand has 425 places, 836 transitions, 17702 flow. Second operand 27 states and 291 transitions. [2024-11-17 03:37:51,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 901 transitions, 20235 flow [2024-11-17 03:37:52,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 901 transitions, 19666 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-11-17 03:37:52,254 INFO L231 Difference]: Finished difference. Result has 440 places, 851 transitions, 18915 flow [2024-11-17 03:37:52,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=17146, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=18915, PETRI_PLACES=440, PETRI_TRANSITIONS=851} [2024-11-17 03:37:52,255 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-11-17 03:37:52,255 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 851 transitions, 18915 flow [2024-11-17 03:37:52,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2024-11-17 03:37:52,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:52,256 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:52,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 03:37:52,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 03:37:52,457 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:52,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1959935977, now seen corresponding path program 12 times [2024-11-17 03:37:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:52,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448212597] [2024-11-17 03:37:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:52,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:52,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448212597] [2024-11-17 03:37:52,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448212597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:52,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904353248] [2024-11-17 03:37:52,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 03:37:52,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:52,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:52,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:37:52,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 03:37:52,679 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-17 03:37:52,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:37:52,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:52,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:52,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:53,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904353248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:53,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:53,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027071316] [2024-11-17 03:37:53,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:53,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:53,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:53,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:53,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 851 transitions, 18915 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:53,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:53,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:55,206 INFO L124 PetriNetUnfolderBase]: 2420/4800 cut-off events. [2024-11-17 03:37:55,206 INFO L125 PetriNetUnfolderBase]: For 150426/150426 co-relation queries the response was YES. [2024-11-17 03:37:55,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45326 conditions, 4800 events. 2420/4800 cut-off events. For 150426/150426 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 35920 event pairs, 110 based on Foata normal form. 3/4801 useless extension candidates. Maximal degree in co-relation 45211. Up to 2467 conditions per place. [2024-11-17 03:37:55,275 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 325 selfloop transitions, 650 changer transitions 29/1007 dead transitions. [2024-11-17 03:37:55,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1007 transitions, 23192 flow [2024-11-17 03:37:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-17 03:37:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-17 03:37:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 504 transitions. [2024-11-17 03:37:55,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3652173913043478 [2024-11-17 03:37:55,277 INFO L175 Difference]: Start difference. First operand has 440 places, 851 transitions, 18915 flow. Second operand 46 states and 504 transitions. [2024-11-17 03:37:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1007 transitions, 23192 flow [2024-11-17 03:37:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 1007 transitions, 22514 flow, removed 44 selfloop flow, removed 19 redundant places. [2024-11-17 03:37:56,108 INFO L231 Difference]: Finished difference. Result has 482 places, 911 transitions, 21781 flow [2024-11-17 03:37:56,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=18273, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=21781, PETRI_PLACES=482, PETRI_TRANSITIONS=911} [2024-11-17 03:37:56,110 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 452 predicate places. [2024-11-17 03:37:56,110 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 911 transitions, 21781 flow [2024-11-17 03:37:56,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:56,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:37:56,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:37:56,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 03:37:56,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:56,315 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:37:56,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:37:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1375426823, now seen corresponding path program 13 times [2024-11-17 03:37:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:37:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735094285] [2024-11-17 03:37:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:37:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:37:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:56,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:37:56,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735094285] [2024-11-17 03:37:56,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735094285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:37:56,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769320863] [2024-11-17 03:37:56,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-17 03:37:56,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:37:56,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:37:56,486 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:37:56,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 03:37:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:37:56,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:37:56,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:37:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:56,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:37:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:37:56,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769320863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:37:56,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:37:56,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:37:56,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593531580] [2024-11-17 03:37:56,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:37:56,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:37:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:37:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:37:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:37:56,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:37:56,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 911 transitions, 21781 flow. Second operand has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:37:56,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:37:56,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:37:56,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:37:59,848 INFO L124 PetriNetUnfolderBase]: 2505/4970 cut-off events. [2024-11-17 03:37:59,848 INFO L125 PetriNetUnfolderBase]: For 193796/193796 co-relation queries the response was YES. [2024-11-17 03:37:59,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51456 conditions, 4970 events. 2505/4970 cut-off events. For 193796/193796 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 37580 event pairs, 165 based on Foata normal form. 3/4972 useless extension candidates. Maximal degree in co-relation 51325. Up to 2322 conditions per place. [2024-11-17 03:37:59,923 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 322 selfloop transitions, 763 changer transitions 32/1120 dead transitions. [2024-11-17 03:37:59,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1120 transitions, 27703 flow [2024-11-17 03:37:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-17 03:37:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-17 03:37:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 718 transitions. [2024-11-17 03:37:59,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3519607843137255 [2024-11-17 03:37:59,926 INFO L175 Difference]: Start difference. First operand has 482 places, 911 transitions, 21781 flow. Second operand 68 states and 718 transitions. [2024-11-17 03:37:59,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1120 transitions, 27703 flow [2024-11-17 03:38:01,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1120 transitions, 27217 flow, removed 188 selfloop flow, removed 14 redundant places. [2024-11-17 03:38:01,086 INFO L231 Difference]: Finished difference. Result has 542 places, 1009 transitions, 26081 flow [2024-11-17 03:38:01,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=21332, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=26081, PETRI_PLACES=542, PETRI_TRANSITIONS=1009} [2024-11-17 03:38:01,087 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 512 predicate places. [2024-11-17 03:38:01,088 INFO L471 AbstractCegarLoop]: Abstraction has has 542 places, 1009 transitions, 26081 flow [2024-11-17 03:38:01,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.88) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-17 03:38:01,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:38:01,088 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:38:01,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 03:38:01,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-17 03:38:01,289 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:38:01,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:38:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1755438707, now seen corresponding path program 14 times [2024-11-17 03:38:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:38:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048253170] [2024-11-17 03:38:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:38:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:38:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:38:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:38:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048253170] [2024-11-17 03:38:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048253170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:38:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128374532] [2024-11-17 03:38:01,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:38:01,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:38:01,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:38:01,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:38:01,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 03:38:01,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:38:01,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:38:01,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:38:01,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:38:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:01,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:38:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128374532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:38:01,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:38:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 03:38:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285549787] [2024-11-17 03:38:01,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:38:01,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:38:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:38:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:38:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:38:01,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:38:01,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1009 transitions, 26081 flow. Second operand has 25 states, 25 states have (on average 7.92) internal successors, (198), 25 states have internal predecessors, (198), 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) [2024-11-17 03:38:01,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:38:01,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:38:01,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:38:04,774 INFO L124 PetriNetUnfolderBase]: 2749/5401 cut-off events. [2024-11-17 03:38:04,774 INFO L125 PetriNetUnfolderBase]: For 236642/236652 co-relation queries the response was YES. [2024-11-17 03:38:04,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59280 conditions, 5401 events. 2749/5401 cut-off events. For 236642/236652 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 41147 event pairs, 182 based on Foata normal form. 7/5407 useless extension candidates. Maximal degree in co-relation 59138. Up to 2368 conditions per place. [2024-11-17 03:38:04,849 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 357 selfloop transitions, 852 changer transitions 38/1250 dead transitions. [2024-11-17 03:38:04,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1250 transitions, 33078 flow [2024-11-17 03:38:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-17 03:38:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-17 03:38:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 642 transitions. [2024-11-17 03:38:04,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821428571428571 [2024-11-17 03:38:04,851 INFO L175 Difference]: Start difference. First operand has 542 places, 1009 transitions, 26081 flow. Second operand 56 states and 642 transitions. [2024-11-17 03:38:04,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1250 transitions, 33078 flow [2024-11-17 03:38:06,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 1250 transitions, 31213 flow, removed 590 selfloop flow, removed 28 redundant places. [2024-11-17 03:38:06,770 INFO L231 Difference]: Finished difference. Result has 575 places, 1123 transitions, 30112 flow [2024-11-17 03:38:06,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=24598, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=733, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=30112, PETRI_PLACES=575, PETRI_TRANSITIONS=1123} [2024-11-17 03:38:06,771 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 545 predicate places. [2024-11-17 03:38:06,771 INFO L471 AbstractCegarLoop]: Abstraction has has 575 places, 1123 transitions, 30112 flow [2024-11-17 03:38:06,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.92) internal successors, (198), 25 states have internal predecessors, (198), 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) [2024-11-17 03:38:06,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:38:06,771 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:38:06,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 03:38:06,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:38:06,972 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:38:06,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:38:06,972 INFO L85 PathProgramCache]: Analyzing trace with hash 855952655, now seen corresponding path program 15 times [2024-11-17 03:38:06,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:38:06,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188685372] [2024-11-17 03:38:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:38:06,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:38:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:38:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:07,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:38:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188685372] [2024-11-17 03:38:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188685372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:38:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887214208] [2024-11-17 03:38:07,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:38:07,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:38:07,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:38:07,154 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:38:07,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 03:38:07,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 03:38:07,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:38:07,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 03:38:07,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:38:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:07,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:38:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:07,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887214208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:38:07,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:38:07,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-17 03:38:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318977910] [2024-11-17 03:38:07,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:38:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 03:38:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:38:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 03:38:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-11-17 03:38:07,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:38:07,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1123 transitions, 30112 flow. Second operand has 31 states, 31 states have (on average 7.838709677419355) internal successors, (243), 31 states have internal predecessors, (243), 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) [2024-11-17 03:38:07,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:38:07,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:38:07,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:38:16,965 INFO L124 PetriNetUnfolderBase]: 5496/10558 cut-off events. [2024-11-17 03:38:16,966 INFO L125 PetriNetUnfolderBase]: For 466085/466095 co-relation queries the response was YES. [2024-11-17 03:38:17,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119834 conditions, 10558 events. 5496/10558 cut-off events. For 466085/466095 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 85183 event pairs, 150 based on Foata normal form. 61/10615 useless extension candidates. Maximal degree in co-relation 119687. Up to 2934 conditions per place. [2024-11-17 03:38:17,124 INFO L140 encePairwiseOnDemand]: 15/30 looper letters, 701 selfloop transitions, 1851 changer transitions 99/2654 dead transitions. [2024-11-17 03:38:17,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 2654 transitions, 72302 flow [2024-11-17 03:38:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-11-17 03:38:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2024-11-17 03:38:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 1929 transitions. [2024-11-17 03:38:17,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3850299401197605 [2024-11-17 03:38:17,127 INFO L175 Difference]: Start difference. First operand has 575 places, 1123 transitions, 30112 flow. Second operand 167 states and 1929 transitions. [2024-11-17 03:38:17,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 2654 transitions, 72302 flow [2024-11-17 03:38:20,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 2654 transitions, 71309 flow, removed 396 selfloop flow, removed 22 redundant places. [2024-11-17 03:38:20,877 INFO L231 Difference]: Finished difference. Result has 771 places, 2131 transitions, 64784 flow [2024-11-17 03:38:20,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=29612, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=919, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=167, PETRI_FLOW=64784, PETRI_PLACES=771, PETRI_TRANSITIONS=2131} [2024-11-17 03:38:20,878 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 741 predicate places. [2024-11-17 03:38:20,879 INFO L471 AbstractCegarLoop]: Abstraction has has 771 places, 2131 transitions, 64784 flow [2024-11-17 03:38:20,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.838709677419355) internal successors, (243), 31 states have internal predecessors, (243), 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) [2024-11-17 03:38:20,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:38:20,879 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:38:20,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 03:38:21,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:38:21,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:38:21,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:38:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1161439505, now seen corresponding path program 16 times [2024-11-17 03:38:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:38:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454764037] [2024-11-17 03:38:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:38:21,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:38:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:38:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:38:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454764037] [2024-11-17 03:38:21,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454764037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:38:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149109600] [2024-11-17 03:38:21,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:38:21,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:38:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:38:21,270 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:38:21,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 03:38:21,310 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:38:21,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:38:21,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 03:38:21,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:38:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:21,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:38:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:38:21,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149109600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:38:21,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:38:21,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-17 03:38:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979529843] [2024-11-17 03:38:21,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:38:21,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 03:38:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:38:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 03:38:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-17 03:38:21,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-17 03:38:21,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 2131 transitions, 64784 flow. Second operand has 31 states, 31 states have (on average 7.806451612903226) internal successors, (242), 31 states have internal predecessors, (242), 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) [2024-11-17 03:38:21,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:38:21,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-17 03:38:21,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:38:35,721 INFO L124 PetriNetUnfolderBase]: 7041/13414 cut-off events. [2024-11-17 03:38:35,721 INFO L125 PetriNetUnfolderBase]: For 908525/908525 co-relation queries the response was YES. [2024-11-17 03:38:36,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179344 conditions, 13414 events. 7041/13414 cut-off events. For 908525/908525 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 111103 event pairs, 246 based on Foata normal form. 14/13428 useless extension candidates. Maximal degree in co-relation 179137. Up to 3894 conditions per place. [2024-11-17 03:38:36,126 INFO L140 encePairwiseOnDemand]: 16/30 looper letters, 870 selfloop transitions, 2280 changer transitions 123/3276 dead transitions. [2024-11-17 03:38:36,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 3276 transitions, 101822 flow [2024-11-17 03:38:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-11-17 03:38:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2024-11-17 03:38:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 2199 transitions. [2024-11-17 03:38:36,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3610837438423645 [2024-11-17 03:38:36,132 INFO L175 Difference]: Start difference. First operand has 771 places, 2131 transitions, 64784 flow. Second operand 203 states and 2199 transitions. [2024-11-17 03:38:36,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 3276 transitions, 101822 flow