./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:51:45,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:51:45,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:51:45,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:51:45,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:51:45,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:51:45,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:51:45,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:51:45,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:51:45,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:51:45,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:51:45,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:51:45,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:51:45,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:51:45,290 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:51:45,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:51:45,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:51:45,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:51:45,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:51:45,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:51:45,292 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:51:45,293 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:51:45,293 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:51:45,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:51:45,297 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:51:45,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:51:45,297 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:51:45,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:51:45,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:51:45,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:51:45,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:51:45,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:51:45,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:51:45,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:45,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:51:45,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:51:45,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:51:45,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:51:45,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:51:45,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:51:45,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:51:45,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:51:45,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-09 10:51:45,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:51:45,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:51:45,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:51:45,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:51:45,596 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:51:45,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-09 10:51:46,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:51:47,180 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:51:47,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-09 10:51:47,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d21560a1/651d8b3137b943c397a70f23541770ed/FLAG87f5d9dd0 [2024-11-09 10:51:47,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d21560a1/651d8b3137b943c397a70f23541770ed [2024-11-09 10:51:47,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:51:47,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:51:47,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:47,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:51:47,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:51:47,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edf4b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47, skipping insertion in model container [2024-11-09 10:51:47,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:51:47,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:47,460 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:51:47,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:47,498 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:51:47,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47 WrapperNode [2024-11-09 10:51:47,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:47,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:47,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:51:47,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:51:47,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,536 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2024-11-09 10:51:47,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:47,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:51:47,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:51:47,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:51:47,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,561 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]. [2024-11-09 10:51:47,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:51:47,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:51:47,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:51:47,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:51:47,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (1/1) ... [2024-11-09 10:51:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:47,617 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) [2024-11-09 10:51:47,620 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 [2024-11-09 10:51:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:51:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:51:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:51:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:51:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:51:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:51:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:51:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:51:47,675 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:51:47,765 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:51:47,767 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:51:47,902 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:51:47,902 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:51:48,022 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:51:48,023 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:51:48,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:48 BoogieIcfgContainer [2024-11-09 10:51:48,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:51:48,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:51:48,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:51:48,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:51:48,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:51:47" (1/3) ... [2024-11-09 10:51:48,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b04185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:48, skipping insertion in model container [2024-11-09 10:51:48,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:47" (2/3) ... [2024-11-09 10:51:48,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b04185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:48, skipping insertion in model container [2024-11-09 10:51:48,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:48" (3/3) ... [2024-11-09 10:51:48,031 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-09 10:51:48,045 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:51:48,045 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:51:48,045 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:51:48,098 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:51:48,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-09 10:51:48,171 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-09 10:51:48,171 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:48,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-09 10:51:48,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-09 10:51:48,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-09 10:51:48,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:51:48,206 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;@63df4a0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:51:48,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:51:48,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:51:48,225 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-09 10:51:48,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:48,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:48,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:48,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:48,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1133802136, now seen corresponding path program 1 times [2024-11-09 10:51:48,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:48,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871821268] [2024-11-09 10:51:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:48,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:48,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:48,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871821268] [2024-11-09 10:51:48,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871821268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:48,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:51:48,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744830310] [2024-11-09 10:51:48,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:48,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:51:48,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:51:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:51:48,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:48,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 10:51:48,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:48,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:48,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:48,757 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-09 10:51:48,757 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-09 10:51:48,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 32 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-09 10:51:48,764 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-09 10:51:48,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-09 10:51:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:51:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:51:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-09 10:51:48,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-09 10:51:48,776 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-09 10:51:48,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-09 10:51:48,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:48,781 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-09 10:51:48,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-09 10:51:48,785 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-09 10:51:48,786 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-09 10:51:48,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 10:51:48,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:48,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:48,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:51:48,787 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:48,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash 930867415, now seen corresponding path program 1 times [2024-11-09 10:51:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038420700] [2024-11-09 10:51:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038420700] [2024-11-09 10:51:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038420700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:48,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:48,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585171625] [2024-11-09 10:51:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:48,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:48,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:48,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:48,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:48,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:48,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:48,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:49,107 INFO L124 PetriNetUnfolderBase]: 152/271 cut-off events. [2024-11-09 10:51:49,107 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 10:51:49,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 271 events. 152/271 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 956 event pairs, 59 based on Foata normal form. 4/253 useless extension candidates. Maximal degree in co-relation 179. Up to 185 conditions per place. [2024-11-09 10:51:49,111 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 32 selfloop transitions, 9 changer transitions 2/44 dead transitions. [2024-11-09 10:51:49,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 44 transitions, 203 flow [2024-11-09 10:51:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-09 10:51:49,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-09 10:51:49,117 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 64 transitions. [2024-11-09 10:51:49,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 44 transitions, 203 flow [2024-11-09 10:51:49,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 44 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:49,119 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 122 flow [2024-11-09 10:51:49,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2024-11-09 10:51:49,121 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-09 10:51:49,121 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 122 flow [2024-11-09 10:51:49,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:49,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:49,122 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:49,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:51:49,122 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:49,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -337367831, now seen corresponding path program 2 times [2024-11-09 10:51:49,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:49,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882015932] [2024-11-09 10:51:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:49,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882015932] [2024-11-09 10:51:49,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882015932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:49,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:49,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767388017] [2024-11-09 10:51:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:49,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:49,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:49,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-11-09 10:51:49,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:49,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:49,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:49,468 INFO L124 PetriNetUnfolderBase]: 180/318 cut-off events. [2024-11-09 10:51:49,468 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-09 10:51:49,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 318 events. 180/318 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1139 event pairs, 2 based on Foata normal form. 13/331 useless extension candidates. Maximal degree in co-relation 643. Up to 146 conditions per place. [2024-11-09 10:51:49,477 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 48 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-09 10:51:49,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 359 flow [2024-11-09 10:51:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-09 10:51:49,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:51:49,480 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 122 flow. Second operand 7 states and 84 transitions. [2024-11-09 10:51:49,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 359 flow [2024-11-09 10:51:49,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 357 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:51:49,487 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 206 flow [2024-11-09 10:51:49,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-09 10:51:49,489 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-09 10:51:49,489 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 206 flow [2024-11-09 10:51:49,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-11-09 10:51:49,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:49,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:49,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:51:49,491 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:49,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2085922199, now seen corresponding path program 3 times [2024-11-09 10:51:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:49,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525514914] [2024-11-09 10:51:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:49,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525514914] [2024-11-09 10:51:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525514914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:49,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:49,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422710915] [2024-11-09 10:51:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:49,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:49,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:49,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:49,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:49,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:49,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:49,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:49,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:49,760 INFO L124 PetriNetUnfolderBase]: 243/430 cut-off events. [2024-11-09 10:51:49,761 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-11-09 10:51:49,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 430 events. 243/430 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1559 event pairs, 86 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 980. Up to 194 conditions per place. [2024-11-09 10:51:49,767 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 48 selfloop transitions, 10 changer transitions 2/61 dead transitions. [2024-11-09 10:51:49,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 463 flow [2024-11-09 10:51:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-09 10:51:49,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:51:49,769 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 206 flow. Second operand 5 states and 60 transitions. [2024-11-09 10:51:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 463 flow [2024-11-09 10:51:49,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 458 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:49,780 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 257 flow [2024-11-09 10:51:49,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-09 10:51:49,781 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-09 10:51:49,782 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 257 flow [2024-11-09 10:51:49,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:49,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:49,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:49,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:51:49,783 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:49,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash 533352207, now seen corresponding path program 4 times [2024-11-09 10:51:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:49,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439897466] [2024-11-09 10:51:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439897466] [2024-11-09 10:51:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439897466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227765299] [2024-11-09 10:51:49,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:51:49,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:49,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:49,887 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) [2024-11-09 10:51:49,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:51:49,952 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:51:49,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:49,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:51:49,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227765299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:50,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-09 10:51:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581408702] [2024-11-09 10:51:50,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:50,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:51:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:51:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:51:50,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:50,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 257 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-11-09 10:51:50,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:50,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:50,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:50,494 INFO L124 PetriNetUnfolderBase]: 346/603 cut-off events. [2024-11-09 10:51:50,494 INFO L125 PetriNetUnfolderBase]: For 1334/1334 co-relation queries the response was YES. [2024-11-09 10:51:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 603 events. 346/603 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2493 event pairs, 24 based on Foata normal form. 9/612 useless extension candidates. Maximal degree in co-relation 1940. Up to 180 conditions per place. [2024-11-09 10:51:50,500 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 70 selfloop transitions, 40 changer transitions 0/111 dead transitions. [2024-11-09 10:51:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 855 flow [2024-11-09 10:51:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:51:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:51:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-09 10:51:50,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-09 10:51:50,502 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 257 flow. Second operand 15 states and 159 transitions. [2024-11-09 10:51:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 855 flow [2024-11-09 10:51:50,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 811 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:50,509 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 549 flow [2024-11-09 10:51:50,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=549, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-09 10:51:50,510 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-09 10:51:50,510 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 549 flow [2024-11-09 10:51:50,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-11-09 10:51:50,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:50,510 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:50,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:51:50,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:50,712 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:50,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1764661423, now seen corresponding path program 5 times [2024-11-09 10:51:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610132319] [2024-11-09 10:51:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:50,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610132319] [2024-11-09 10:51:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610132319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761513055] [2024-11-09 10:51:50,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:51:50,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:50,793 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) [2024-11-09 10:51:50,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:51:50,849 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:50,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:50,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:51:50,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:50,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761513055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:50,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:50,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-09 10:51:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081185927] [2024-11-09 10:51:50,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:50,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:51:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:51:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:51:50,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:50,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 549 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-09 10:51:50,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:50,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:50,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:51,159 INFO L124 PetriNetUnfolderBase]: 333/590 cut-off events. [2024-11-09 10:51:51,159 INFO L125 PetriNetUnfolderBase]: For 2559/2559 co-relation queries the response was YES. [2024-11-09 10:51:51,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 590 events. 333/590 cut-off events. For 2559/2559 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2481 event pairs, 66 based on Foata normal form. 13/603 useless extension candidates. Maximal degree in co-relation 2313. Up to 205 conditions per place. [2024-11-09 10:51:51,164 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 62 selfloop transitions, 36 changer transitions 1/100 dead transitions. [2024-11-09 10:51:51,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 999 flow [2024-11-09 10:51:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:51:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:51:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-11-09 10:51:51,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-09 10:51:51,166 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 549 flow. Second operand 8 states and 94 transitions. [2024-11-09 10:51:51,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 999 flow [2024-11-09 10:51:51,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 925 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:51,176 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 718 flow [2024-11-09 10:51:51,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-11-09 10:51:51,177 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-11-09 10:51:51,178 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 718 flow [2024-11-09 10:51:51,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-09 10:51:51,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:51,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:51,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:51,379 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,SelfDestructingSolverStorable5 [2024-11-09 10:51:51,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:51,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1753212447, now seen corresponding path program 6 times [2024-11-09 10:51:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518538870] [2024-11-09 10:51:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518538870] [2024-11-09 10:51:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518538870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:51,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:51,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761295038] [2024-11-09 10:51:51,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:51,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:51,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:51,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:51,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 718 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:51,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:51,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:51,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:51,546 INFO L124 PetriNetUnfolderBase]: 331/588 cut-off events. [2024-11-09 10:51:51,547 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2024-11-09 10:51:51,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2672 conditions, 588 events. 331/588 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2500 event pairs, 122 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 2374. Up to 492 conditions per place. [2024-11-09 10:51:51,552 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 13 changer transitions 2/80 dead transitions. [2024-11-09 10:51:51,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 918 flow [2024-11-09 10:51:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-09 10:51:51,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-09 10:51:51,554 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 718 flow. Second operand 5 states and 59 transitions. [2024-11-09 10:51:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 918 flow [2024-11-09 10:51:51,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 837 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-09 10:51:51,566 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 655 flow [2024-11-09 10:51:51,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=655, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-09 10:51:51,568 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-09 10:51:51,568 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 655 flow [2024-11-09 10:51:51,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:51,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:51,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:51,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:51:51,569 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:51,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash -477607017, now seen corresponding path program 7 times [2024-11-09 10:51:51,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:51,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568546822] [2024-11-09 10:51:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:51,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568546822] [2024-11-09 10:51:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568546822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:51,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812254337] [2024-11-09 10:51:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:51,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:51,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:51,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:51,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:51,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 655 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:51,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:51,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:51,748 INFO L124 PetriNetUnfolderBase]: 322/561 cut-off events. [2024-11-09 10:51:51,748 INFO L125 PetriNetUnfolderBase]: For 2440/2440 co-relation queries the response was YES. [2024-11-09 10:51:51,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 561 events. 322/561 cut-off events. For 2440/2440 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2202 event pairs, 108 based on Foata normal form. 2/559 useless extension candidates. Maximal degree in co-relation 1863. Up to 322 conditions per place. [2024-11-09 10:51:51,754 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 56 selfloop transitions, 21 changer transitions 2/80 dead transitions. [2024-11-09 10:51:51,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 852 flow [2024-11-09 10:51:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-09 10:51:51,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-09 10:51:51,755 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 655 flow. Second operand 5 states and 58 transitions. [2024-11-09 10:51:51,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 852 flow [2024-11-09 10:51:51,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 824 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:51,763 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 663 flow [2024-11-09 10:51:51,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=663, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-09 10:51:51,763 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-09 10:51:51,764 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 663 flow [2024-11-09 10:51:51,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-09 10:51:51,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:51,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:51,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:51:51,764 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:51,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash -110425821, now seen corresponding path program 1 times [2024-11-09 10:51:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637951680] [2024-11-09 10:51:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:51,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:51,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:51,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637951680] [2024-11-09 10:51:51,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637951680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:51,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81970319] [2024-11-09 10:51:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:51,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:51,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:51,844 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) [2024-11-09 10:51:51,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:51:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:51,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:51:51,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:51,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:51:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81970319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:51,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:51:51,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 5 [2024-11-09 10:51:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270983384] [2024-11-09 10:51:51,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:51,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:51,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:51,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:51,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:51,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:51,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:52,103 INFO L124 PetriNetUnfolderBase]: 516/941 cut-off events. [2024-11-09 10:51:52,104 INFO L125 PetriNetUnfolderBase]: For 4688/4707 co-relation queries the response was YES. [2024-11-09 10:51:52,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4063 conditions, 941 events. 516/941 cut-off events. For 4688/4707 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4464 event pairs, 94 based on Foata normal form. 12/946 useless extension candidates. Maximal degree in co-relation 3033. Up to 404 conditions per place. [2024-11-09 10:51:52,112 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 103 selfloop transitions, 5 changer transitions 18/133 dead transitions. [2024-11-09 10:51:52,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 133 transitions, 1521 flow [2024-11-09 10:51:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:51:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:51:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-09 10:51:52,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 10:51:52,113 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 663 flow. Second operand 4 states and 64 transitions. [2024-11-09 10:51:52,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 133 transitions, 1521 flow [2024-11-09 10:51:52,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 1431 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:52,124 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 627 flow [2024-11-09 10:51:52,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=627, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-09 10:51:52,125 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2024-11-09 10:51:52,125 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 627 flow [2024-11-09 10:51:52,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:52,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:52,125 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:52,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:51:52,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:52,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:52,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 623421192, now seen corresponding path program 2 times [2024-11-09 10:51:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:52,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120797413] [2024-11-09 10:51:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120797413] [2024-11-09 10:51:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120797413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481215286] [2024-11-09 10:51:52,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:51:52,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:52,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:52,405 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) [2024-11-09 10:51:52,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:51:52,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:51:52,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:52,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:52,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:52,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:51:52,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481215286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:52,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:51:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555881591] [2024-11-09 10:51:52,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:52,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:51:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:51:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:51:52,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:52,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 627 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-09 10:51:52,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:52,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:52,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:53,071 INFO L124 PetriNetUnfolderBase]: 1043/1724 cut-off events. [2024-11-09 10:51:53,071 INFO L125 PetriNetUnfolderBase]: For 7053/7053 co-relation queries the response was YES. [2024-11-09 10:51:53,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 1724 events. 1043/1724 cut-off events. For 7053/7053 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7834 event pairs, 114 based on Foata normal form. 12/1718 useless extension candidates. Maximal degree in co-relation 6073. Up to 511 conditions per place. [2024-11-09 10:51:53,086 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 129 selfloop transitions, 53 changer transitions 3/186 dead transitions. [2024-11-09 10:51:53,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 186 transitions, 1794 flow [2024-11-09 10:51:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:51:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:51:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-11-09 10:51:53,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-09 10:51:53,088 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 627 flow. Second operand 14 states and 170 transitions. [2024-11-09 10:51:53,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 186 transitions, 1794 flow [2024-11-09 10:51:53,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 186 transitions, 1794 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:51:53,102 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 1024 flow [2024-11-09 10:51:53,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1024, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-11-09 10:51:53,103 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 63 predicate places. [2024-11-09 10:51:53,103 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 1024 flow [2024-11-09 10:51:53,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-09 10:51:53,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:53,103 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:53,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:51:53,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:53,304 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:53,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:53,305 INFO L85 PathProgramCache]: Analyzing trace with hash 983359956, now seen corresponding path program 3 times [2024-11-09 10:51:53,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:53,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767322948] [2024-11-09 10:51:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:53,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:53,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:53,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767322948] [2024-11-09 10:51:53,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767322948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:53,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414113523] [2024-11-09 10:51:53,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:51:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:53,379 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) [2024-11-09 10:51:53,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:51:53,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 10:51:53,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:53,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:53,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:53,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414113523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:53,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:51:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656677420] [2024-11-09 10:51:53,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:53,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:51:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:51:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:51:53,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:53,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 1024 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2024-11-09 10:51:53,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:53,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:53,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:54,114 INFO L124 PetriNetUnfolderBase]: 1445/2394 cut-off events. [2024-11-09 10:51:54,114 INFO L125 PetriNetUnfolderBase]: For 14996/14996 co-relation queries the response was YES. [2024-11-09 10:51:54,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12445 conditions, 2394 events. 1445/2394 cut-off events. For 14996/14996 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11662 event pairs, 134 based on Foata normal form. 18/2412 useless extension candidates. Maximal degree in co-relation 9709. Up to 777 conditions per place. [2024-11-09 10:51:54,137 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 123 selfloop transitions, 84 changer transitions 3/211 dead transitions. [2024-11-09 10:51:54,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 211 transitions, 2344 flow [2024-11-09 10:51:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:51:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:51:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-11-09 10:51:54,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-11-09 10:51:54,139 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 1024 flow. Second operand 17 states and 185 transitions. [2024-11-09 10:51:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 211 transitions, 2344 flow [2024-11-09 10:51:54,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 211 transitions, 2287 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:54,167 INFO L231 Difference]: Finished difference. Result has 109 places, 134 transitions, 1571 flow [2024-11-09 10:51:54,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1571, PETRI_PLACES=109, PETRI_TRANSITIONS=134} [2024-11-09 10:51:54,168 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 83 predicate places. [2024-11-09 10:51:54,168 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 134 transitions, 1571 flow [2024-11-09 10:51:54,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2024-11-09 10:51:54,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:54,169 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:54,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 10:51:54,369 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,SelfDestructingSolverStorable10 [2024-11-09 10:51:54,370 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:54,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:54,371 INFO L85 PathProgramCache]: Analyzing trace with hash -88330000, now seen corresponding path program 4 times [2024-11-09 10:51:54,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:54,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601091399] [2024-11-09 10:51:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:54,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601091399] [2024-11-09 10:51:54,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601091399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:54,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243679878] [2024-11-09 10:51:54,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:51:54,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:54,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:54,450 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) [2024-11-09 10:51:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:51:54,504 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:51:54,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:54,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:54,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:54,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:54,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243679878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:54,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:54,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:51:54,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622644330] [2024-11-09 10:51:54,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:54,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:51:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:51:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:51:54,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:54,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 134 transitions, 1571 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-11-09 10:51:54,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:54,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:54,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:55,158 INFO L124 PetriNetUnfolderBase]: 1693/2801 cut-off events. [2024-11-09 10:51:55,158 INFO L125 PetriNetUnfolderBase]: For 28077/28077 co-relation queries the response was YES. [2024-11-09 10:51:55,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 2801 events. 1693/2801 cut-off events. For 28077/28077 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14117 event pairs, 105 based on Foata normal form. 42/2843 useless extension candidates. Maximal degree in co-relation 15591. Up to 881 conditions per place. [2024-11-09 10:51:55,189 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 115 selfloop transitions, 114 changer transitions 31/261 dead transitions. [2024-11-09 10:51:55,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 261 transitions, 3267 flow [2024-11-09 10:51:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:51:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:51:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-09 10:51:55,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-09 10:51:55,191 INFO L175 Difference]: Start difference. First operand has 109 places, 134 transitions, 1571 flow. Second operand 15 states and 159 transitions. [2024-11-09 10:51:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 261 transitions, 3267 flow [2024-11-09 10:51:55,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 261 transitions, 2968 flow, removed 110 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:55,245 INFO L231 Difference]: Finished difference. Result has 127 places, 170 transitions, 2229 flow [2024-11-09 10:51:55,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2229, PETRI_PLACES=127, PETRI_TRANSITIONS=170} [2024-11-09 10:51:55,246 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 101 predicate places. [2024-11-09 10:51:55,246 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 170 transitions, 2229 flow [2024-11-09 10:51:55,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-11-09 10:51:55,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:55,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:55,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:51:55,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:55,451 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:55,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1826760788, now seen corresponding path program 5 times [2024-11-09 10:51:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:55,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568615416] [2024-11-09 10:51:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:55,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:55,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568615416] [2024-11-09 10:51:55,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568615416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575328942] [2024-11-09 10:51:55,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:51:55,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:55,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:55,520 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) [2024-11-09 10:51:55,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:51:55,580 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:51:55,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:55,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:55,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:55,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575328942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:55,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:55,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:51:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397012609] [2024-11-09 10:51:55,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:55,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:51:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:51:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:51:55,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:55,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 170 transitions, 2229 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-11-09 10:51:55,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:55,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:55,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:56,584 INFO L124 PetriNetUnfolderBase]: 1917/3142 cut-off events. [2024-11-09 10:51:56,585 INFO L125 PetriNetUnfolderBase]: For 44863/44863 co-relation queries the response was YES. [2024-11-09 10:51:56,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19390 conditions, 3142 events. 1917/3142 cut-off events. For 44863/44863 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15998 event pairs, 82 based on Foata normal form. 92/3234 useless extension candidates. Maximal degree in co-relation 18573. Up to 1006 conditions per place. [2024-11-09 10:51:56,615 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 157 selfloop transitions, 161 changer transitions 3/322 dead transitions. [2024-11-09 10:51:56,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 322 transitions, 4274 flow [2024-11-09 10:51:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 10:51:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 10:51:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 277 transitions. [2024-11-09 10:51:56,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4439102564102564 [2024-11-09 10:51:56,618 INFO L175 Difference]: Start difference. First operand has 127 places, 170 transitions, 2229 flow. Second operand 26 states and 277 transitions. [2024-11-09 10:51:56,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 322 transitions, 4274 flow [2024-11-09 10:51:56,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 322 transitions, 4058 flow, removed 68 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:56,681 INFO L231 Difference]: Finished difference. Result has 163 places, 210 transitions, 3260 flow [2024-11-09 10:51:56,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3260, PETRI_PLACES=163, PETRI_TRANSITIONS=210} [2024-11-09 10:51:56,683 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 137 predicate places. [2024-11-09 10:51:56,683 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 210 transitions, 3260 flow [2024-11-09 10:51:56,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-11-09 10:51:56,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:56,683 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:56,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:51:56,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:56,885 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:56,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1498733176, now seen corresponding path program 6 times [2024-11-09 10:51:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029390149] [2024-11-09 10:51:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:56,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029390149] [2024-11-09 10:51:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029390149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042973129] [2024-11-09 10:51:56,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:51:56,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:56,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:56,987 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) [2024-11-09 10:51:56,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:51:57,035 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:51:57,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:57,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:57,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042973129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:57,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:57,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 10:51:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140025676] [2024-11-09 10:51:57,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:57,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:51:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:51:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:51:57,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:57,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 210 transitions, 3260 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 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) [2024-11-09 10:51:57,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:57,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:57,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:58,144 INFO L124 PetriNetUnfolderBase]: 2437/4008 cut-off events. [2024-11-09 10:51:58,145 INFO L125 PetriNetUnfolderBase]: For 86655/86655 co-relation queries the response was YES. [2024-11-09 10:51:58,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28586 conditions, 4008 events. 2437/4008 cut-off events. For 86655/86655 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21738 event pairs, 98 based on Foata normal form. 40/4048 useless extension candidates. Maximal degree in co-relation 28469. Up to 1349 conditions per place. [2024-11-09 10:51:58,178 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 161 selfloop transitions, 188 changer transitions 2/352 dead transitions. [2024-11-09 10:51:58,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 352 transitions, 5685 flow [2024-11-09 10:51:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:51:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:51:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-11-09 10:51:58,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-11-09 10:51:58,180 INFO L175 Difference]: Start difference. First operand has 163 places, 210 transitions, 3260 flow. Second operand 16 states and 173 transitions. [2024-11-09 10:51:58,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 352 transitions, 5685 flow [2024-11-09 10:51:58,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 352 transitions, 5318 flow, removed 137 selfloop flow, removed 8 redundant places. [2024-11-09 10:51:58,400 INFO L231 Difference]: Finished difference. Result has 176 places, 266 transitions, 4646 flow [2024-11-09 10:51:58,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4646, PETRI_PLACES=176, PETRI_TRANSITIONS=266} [2024-11-09 10:51:58,401 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 150 predicate places. [2024-11-09 10:51:58,401 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 266 transitions, 4646 flow [2024-11-09 10:51:58,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 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) [2024-11-09 10:51:58,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:58,401 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:58,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:51:58,602 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,SelfDestructingSolverStorable13 [2024-11-09 10:51:58,603 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:51:58,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:58,603 INFO L85 PathProgramCache]: Analyzing trace with hash 550614130, now seen corresponding path program 7 times [2024-11-09 10:51:58,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:58,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392270524] [2024-11-09 10:51:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:58,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392270524] [2024-11-09 10:51:58,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392270524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769366840] [2024-11-09 10:51:58,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:51:58,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:58,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:58,693 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) [2024-11-09 10:51:58,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:51:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:58,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:58,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769366840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:58,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:51:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389791241] [2024-11-09 10:51:58,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:58,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:51:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:51:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:51:58,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:51:58,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 266 transitions, 4646 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-09 10:51:58,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:58,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:51:58,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:59,841 INFO L124 PetriNetUnfolderBase]: 2443/4030 cut-off events. [2024-11-09 10:51:59,841 INFO L125 PetriNetUnfolderBase]: For 98541/98541 co-relation queries the response was YES. [2024-11-09 10:51:59,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30270 conditions, 4030 events. 2443/4030 cut-off events. For 98541/98541 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22062 event pairs, 270 based on Foata normal form. 8/4038 useless extension candidates. Maximal degree in co-relation 28872. Up to 1074 conditions per place. [2024-11-09 10:51:59,875 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 182 selfloop transitions, 151 changer transitions 3/337 dead transitions. [2024-11-09 10:51:59,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 337 transitions, 6045 flow [2024-11-09 10:51:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:51:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:51:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-11-09 10:51:59,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-11-09 10:51:59,877 INFO L175 Difference]: Start difference. First operand has 176 places, 266 transitions, 4646 flow. Second operand 13 states and 154 transitions. [2024-11-09 10:51:59,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 337 transitions, 6045 flow [2024-11-09 10:52:00,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 337 transitions, 5965 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-09 10:52:00,256 INFO L231 Difference]: Finished difference. Result has 183 places, 265 transitions, 4901 flow [2024-11-09 10:52:00,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4901, PETRI_PLACES=183, PETRI_TRANSITIONS=265} [2024-11-09 10:52:00,257 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2024-11-09 10:52:00,257 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 265 transitions, 4901 flow [2024-11-09 10:52:00,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-09 10:52:00,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:00,258 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:00,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:52:00,458 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,SelfDestructingSolverStorable14 [2024-11-09 10:52:00,459 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:00,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:00,459 INFO L85 PathProgramCache]: Analyzing trace with hash -835767592, now seen corresponding path program 8 times [2024-11-09 10:52:00,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:00,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601902012] [2024-11-09 10:52:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601902012] [2024-11-09 10:52:00,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601902012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:00,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173048148] [2024-11-09 10:52:00,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:00,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:00,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:00,532 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) [2024-11-09 10:52:00,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:52:00,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:00,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:00,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:00,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173048148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:00,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:52:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394526036] [2024-11-09 10:52:00,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:00,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:52:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:52:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:52:00,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:00,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 265 transitions, 4901 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-11-09 10:52:00,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:00,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:00,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:01,643 INFO L124 PetriNetUnfolderBase]: 2756/4536 cut-off events. [2024-11-09 10:52:01,644 INFO L125 PetriNetUnfolderBase]: For 124440/124440 co-relation queries the response was YES. [2024-11-09 10:52:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35613 conditions, 4536 events. 2756/4536 cut-off events. For 124440/124440 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25253 event pairs, 172 based on Foata normal form. 54/4590 useless extension candidates. Maximal degree in co-relation 33774. Up to 1312 conditions per place. [2024-11-09 10:52:01,787 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 153 selfloop transitions, 280 changer transitions 6/440 dead transitions. [2024-11-09 10:52:01,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 440 transitions, 8163 flow [2024-11-09 10:52:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 10:52:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 10:52:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 259 transitions. [2024-11-09 10:52:01,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2024-11-09 10:52:01,796 INFO L175 Difference]: Start difference. First operand has 183 places, 265 transitions, 4901 flow. Second operand 25 states and 259 transitions. [2024-11-09 10:52:01,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 440 transitions, 8163 flow [2024-11-09 10:52:02,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 440 transitions, 7773 flow, removed 36 selfloop flow, removed 12 redundant places. [2024-11-09 10:52:02,106 INFO L231 Difference]: Finished difference. Result has 201 places, 340 transitions, 7056 flow [2024-11-09 10:52:02,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7056, PETRI_PLACES=201, PETRI_TRANSITIONS=340} [2024-11-09 10:52:02,107 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 175 predicate places. [2024-11-09 10:52:02,107 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 340 transitions, 7056 flow [2024-11-09 10:52:02,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-11-09 10:52:02,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:02,108 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:02,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:02,308 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,SelfDestructingSolverStorable15 [2024-11-09 10:52:02,308 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:02,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1735827144, now seen corresponding path program 9 times [2024-11-09 10:52:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576140956] [2024-11-09 10:52:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576140956] [2024-11-09 10:52:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576140956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537605696] [2024-11-09 10:52:02,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:52:02,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:02,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:02,399 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) [2024-11-09 10:52:02,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:52:02,447 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:52:02,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:02,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:02,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537605696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:02,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:02,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:02,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297251328] [2024-11-09 10:52:02,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:02,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:02,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:02,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:02,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:02,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:02,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 340 transitions, 7056 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-11-09 10:52:02,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:02,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:02,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:03,810 INFO L124 PetriNetUnfolderBase]: 3134/5224 cut-off events. [2024-11-09 10:52:03,811 INFO L125 PetriNetUnfolderBase]: For 163198/163198 co-relation queries the response was YES. [2024-11-09 10:52:03,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43511 conditions, 5224 events. 3134/5224 cut-off events. For 163198/163198 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 30545 event pairs, 132 based on Foata normal form. 30/5254 useless extension candidates. Maximal degree in co-relation 40912. Up to 1529 conditions per place. [2024-11-09 10:52:03,864 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 236 selfloop transitions, 319 changer transitions 5/561 dead transitions. [2024-11-09 10:52:03,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 561 transitions, 11590 flow [2024-11-09 10:52:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 10:52:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 10:52:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 300 transitions. [2024-11-09 10:52:03,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-11-09 10:52:03,867 INFO L175 Difference]: Start difference. First operand has 201 places, 340 transitions, 7056 flow. Second operand 29 states and 300 transitions. [2024-11-09 10:52:03,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 561 transitions, 11590 flow [2024-11-09 10:52:04,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 561 transitions, 11025 flow, removed 177 selfloop flow, removed 11 redundant places. [2024-11-09 10:52:04,535 INFO L231 Difference]: Finished difference. Result has 224 places, 415 transitions, 9386 flow [2024-11-09 10:52:04,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6586, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9386, PETRI_PLACES=224, PETRI_TRANSITIONS=415} [2024-11-09 10:52:04,535 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 198 predicate places. [2024-11-09 10:52:04,535 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 415 transitions, 9386 flow [2024-11-09 10:52:04,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-11-09 10:52:04,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:04,536 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:04,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 10:52:04,736 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,SelfDestructingSolverStorable16 [2024-11-09 10:52:04,737 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:04,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash 626728882, now seen corresponding path program 10 times [2024-11-09 10:52:04,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:04,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161428947] [2024-11-09 10:52:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:04,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161428947] [2024-11-09 10:52:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161428947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306851459] [2024-11-09 10:52:04,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:04,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:04,805 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) [2024-11-09 10:52:04,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:52:04,851 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:04,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:04,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:04,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306851459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:04,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267097055] [2024-11-09 10:52:04,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:04,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:04,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:04,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 415 transitions, 9386 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-09 10:52:04,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:04,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:04,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:06,236 INFO L124 PetriNetUnfolderBase]: 3536/5873 cut-off events. [2024-11-09 10:52:06,237 INFO L125 PetriNetUnfolderBase]: For 222062/222062 co-relation queries the response was YES. [2024-11-09 10:52:06,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50694 conditions, 5873 events. 3536/5873 cut-off events. For 222062/222062 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 35020 event pairs, 1270 based on Foata normal form. 18/5891 useless extension candidates. Maximal degree in co-relation 48503. Up to 4490 conditions per place. [2024-11-09 10:52:06,395 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 454 selfloop transitions, 70 changer transitions 2/527 dead transitions. [2024-11-09 10:52:06,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 527 transitions, 11966 flow [2024-11-09 10:52:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:52:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:52:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 172 transitions. [2024-11-09 10:52:06,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-09 10:52:06,397 INFO L175 Difference]: Start difference. First operand has 224 places, 415 transitions, 9386 flow. Second operand 16 states and 172 transitions. [2024-11-09 10:52:06,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 527 transitions, 11966 flow [2024-11-09 10:52:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 527 transitions, 11729 flow, removed 58 selfloop flow, removed 12 redundant places. [2024-11-09 10:52:07,334 INFO L231 Difference]: Finished difference. Result has 233 places, 448 transitions, 10046 flow [2024-11-09 10:52:07,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9167, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10046, PETRI_PLACES=233, PETRI_TRANSITIONS=448} [2024-11-09 10:52:07,334 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-11-09 10:52:07,334 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 448 transitions, 10046 flow [2024-11-09 10:52:07,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-09 10:52:07,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:07,335 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:07,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:07,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 10:52:07,536 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:07,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash -884777506, now seen corresponding path program 11 times [2024-11-09 10:52:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:07,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563398331] [2024-11-09 10:52:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563398331] [2024-11-09 10:52:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563398331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78980423] [2024-11-09 10:52:07,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:07,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:07,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:07,604 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) [2024-11-09 10:52:07,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:52:07,657 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:52:07,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:07,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:07,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:07,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:07,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78980423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:07,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:07,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:07,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344779743] [2024-11-09 10:52:07,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:07,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:07,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:07,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:07,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:07,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 448 transitions, 10046 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-09 10:52:07,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:07,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:07,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:09,051 INFO L124 PetriNetUnfolderBase]: 3883/6425 cut-off events. [2024-11-09 10:52:09,051 INFO L125 PetriNetUnfolderBase]: For 277817/277817 co-relation queries the response was YES. [2024-11-09 10:52:09,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57577 conditions, 6425 events. 3883/6425 cut-off events. For 277817/277817 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38569 event pairs, 623 based on Foata normal form. 84/6509 useless extension candidates. Maximal degree in co-relation 55355. Up to 2720 conditions per place. [2024-11-09 10:52:09,121 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 346 selfloop transitions, 243 changer transitions 3/593 dead transitions. [2024-11-09 10:52:09,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 593 transitions, 13457 flow [2024-11-09 10:52:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 10:52:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 10:52:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 221 transitions. [2024-11-09 10:52:09,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-11-09 10:52:09,280 INFO L175 Difference]: Start difference. First operand has 233 places, 448 transitions, 10046 flow. Second operand 20 states and 221 transitions. [2024-11-09 10:52:09,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 593 transitions, 13457 flow [2024-11-09 10:52:10,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 593 transitions, 13138 flow, removed 126 selfloop flow, removed 7 redundant places. [2024-11-09 10:52:10,486 INFO L231 Difference]: Finished difference. Result has 256 places, 480 transitions, 11640 flow [2024-11-09 10:52:10,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9758, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11640, PETRI_PLACES=256, PETRI_TRANSITIONS=480} [2024-11-09 10:52:10,486 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2024-11-09 10:52:10,486 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 480 transitions, 11640 flow [2024-11-09 10:52:10,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-09 10:52:10,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:10,487 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:10,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 10:52:10,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:10,687 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:10,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash -485468112, now seen corresponding path program 12 times [2024-11-09 10:52:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:10,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844187801] [2024-11-09 10:52:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:10,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:10,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844187801] [2024-11-09 10:52:10,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844187801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:10,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913565914] [2024-11-09 10:52:10,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:52:10,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:10,761 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) [2024-11-09 10:52:10,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:52:10,808 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:52:10,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:10,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:10,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:10,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:52:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913565914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:10,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:10,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:52:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308840013] [2024-11-09 10:52:10,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:10,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:52:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:10,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:52:10,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:52:10,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:10,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 480 transitions, 11640 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-11-09 10:52:10,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:10,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:10,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:12,491 INFO L124 PetriNetUnfolderBase]: 4065/6718 cut-off events. [2024-11-09 10:52:12,491 INFO L125 PetriNetUnfolderBase]: For 353296/353296 co-relation queries the response was YES. [2024-11-09 10:52:12,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64388 conditions, 6718 events. 4065/6718 cut-off events. For 353296/353296 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40506 event pairs, 611 based on Foata normal form. 54/6772 useless extension candidates. Maximal degree in co-relation 63852. Up to 2537 conditions per place. [2024-11-09 10:52:12,551 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 319 selfloop transitions, 272 changer transitions 2/594 dead transitions. [2024-11-09 10:52:12,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 594 transitions, 14635 flow [2024-11-09 10:52:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:52:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:52:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 188 transitions. [2024-11-09 10:52:12,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-09 10:52:12,552 INFO L175 Difference]: Start difference. First operand has 256 places, 480 transitions, 11640 flow. Second operand 18 states and 188 transitions. [2024-11-09 10:52:12,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 594 transitions, 14635 flow [2024-11-09 10:52:14,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 594 transitions, 14318 flow, removed 140 selfloop flow, removed 4 redundant places. [2024-11-09 10:52:14,155 INFO L231 Difference]: Finished difference. Result has 276 places, 503 transitions, 13076 flow [2024-11-09 10:52:14,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11388, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13076, PETRI_PLACES=276, PETRI_TRANSITIONS=503} [2024-11-09 10:52:14,156 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 250 predicate places. [2024-11-09 10:52:14,157 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 503 transitions, 13076 flow [2024-11-09 10:52:14,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-11-09 10:52:14,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:14,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:14,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 10:52:14,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:14,358 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:14,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash 540087214, now seen corresponding path program 13 times [2024-11-09 10:52:14,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:14,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761366261] [2024-11-09 10:52:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:14,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761366261] [2024-11-09 10:52:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761366261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911081090] [2024-11-09 10:52:14,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:52:14,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:14,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:14,428 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) [2024-11-09 10:52:14,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:52:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:14,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:52:14,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:14,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:14,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911081090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:14,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:14,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:52:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991462804] [2024-11-09 10:52:14,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:14,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:52:14,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:52:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:52:14,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:14,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 503 transitions, 13076 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-09 10:52:14,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:14,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:14,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:16,038 INFO L124 PetriNetUnfolderBase]: 4062/6713 cut-off events. [2024-11-09 10:52:16,038 INFO L125 PetriNetUnfolderBase]: For 387926/387926 co-relation queries the response was YES. [2024-11-09 10:52:16,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67120 conditions, 6713 events. 4062/6713 cut-off events. For 387926/387926 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 40634 event pairs, 1520 based on Foata normal form. 8/6721 useless extension candidates. Maximal degree in co-relation 66470. Up to 5388 conditions per place. [2024-11-09 10:52:16,107 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 482 selfloop transitions, 70 changer transitions 2/555 dead transitions. [2024-11-09 10:52:16,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 555 transitions, 14814 flow [2024-11-09 10:52:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:52:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:52:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-11-09 10:52:16,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-09 10:52:16,109 INFO L175 Difference]: Start difference. First operand has 276 places, 503 transitions, 13076 flow. Second operand 11 states and 126 transitions. [2024-11-09 10:52:16,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 555 transitions, 14814 flow [2024-11-09 10:52:17,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 555 transitions, 14572 flow, removed 72 selfloop flow, removed 13 redundant places. [2024-11-09 10:52:17,644 INFO L231 Difference]: Finished difference. Result has 271 places, 500 transitions, 12967 flow [2024-11-09 10:52:17,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12802, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12967, PETRI_PLACES=271, PETRI_TRANSITIONS=500} [2024-11-09 10:52:17,645 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-11-09 10:52:17,645 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 500 transitions, 12967 flow [2024-11-09 10:52:17,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-09 10:52:17,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:17,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:17,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:52:17,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:17,846 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:17,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1848437104, now seen corresponding path program 14 times [2024-11-09 10:52:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:17,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781323109] [2024-11-09 10:52:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:52:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781323109] [2024-11-09 10:52:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781323109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495321207] [2024-11-09 10:52:17,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:17,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:17,949 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) [2024-11-09 10:52:17,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:52:18,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:18,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:18,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:52:18,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:18,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495321207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:18,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 7 [2024-11-09 10:52:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380133239] [2024-11-09 10:52:18,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:18,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:52:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:52:18,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:52:18,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:52:18,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 500 transitions, 12967 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-09 10:52:18,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:18,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:52:18,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:20,537 INFO L124 PetriNetUnfolderBase]: 6350/10820 cut-off events. [2024-11-09 10:52:20,537 INFO L125 PetriNetUnfolderBase]: For 614824/615301 co-relation queries the response was YES. [2024-11-09 10:52:20,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108621 conditions, 10820 events. 6350/10820 cut-off events. For 614824/615301 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 75945 event pairs, 588 based on Foata normal form. 208/10917 useless extension candidates. Maximal degree in co-relation 106937. Up to 3231 conditions per place. [2024-11-09 10:52:20,879 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 1082 selfloop transitions, 10 changer transitions 147/1289 dead transitions. [2024-11-09 10:52:20,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1289 transitions, 36955 flow [2024-11-09 10:52:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:52:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:52:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-11-09 10:52:20,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-09 10:52:20,892 INFO L175 Difference]: Start difference. First operand has 271 places, 500 transitions, 12967 flow. Second operand 5 states and 83 transitions. [2024-11-09 10:52:20,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1289 transitions, 36955 flow [2024-11-09 10:52:24,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 1289 transitions, 36695 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-09 10:52:24,062 INFO L231 Difference]: Finished difference. Result has 268 places, 496 transitions, 12701 flow [2024-11-09 10:52:24,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12858, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12701, PETRI_PLACES=268, PETRI_TRANSITIONS=496} [2024-11-09 10:52:24,063 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 242 predicate places. [2024-11-09 10:52:24,063 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 496 transitions, 12701 flow [2024-11-09 10:52:24,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-09 10:52:24,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:24,063 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:24,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 10:52:24,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 10:52:24,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:24,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1850324723, now seen corresponding path program 15 times [2024-11-09 10:52:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671007083] [2024-11-09 10:52:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671007083] [2024-11-09 10:52:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671007083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733707523] [2024-11-09 10:52:24,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:52:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:24,369 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:24,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:52:24,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 10:52:24,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:24,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:52:24,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:24,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733707523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:24,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:24,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 10:52:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328132020] [2024-11-09 10:52:24,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:24,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 10:52:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 10:52:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-09 10:52:24,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:24,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 496 transitions, 12701 flow. Second operand has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 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) [2024-11-09 10:52:24,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:24,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:24,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:28,830 INFO L124 PetriNetUnfolderBase]: 9840/16096 cut-off events. [2024-11-09 10:52:28,831 INFO L125 PetriNetUnfolderBase]: For 992310/992310 co-relation queries the response was YES. [2024-11-09 10:52:28,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168975 conditions, 16096 events. 9840/16096 cut-off events. For 992310/992310 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 109864 event pairs, 350 based on Foata normal form. 185/16281 useless extension candidates. Maximal degree in co-relation 167333. Up to 4535 conditions per place. [2024-11-09 10:52:29,040 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 461 selfloop transitions, 600 changer transitions 31/1093 dead transitions. [2024-11-09 10:52:29,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1093 transitions, 27677 flow [2024-11-09 10:52:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 10:52:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-09 10:52:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 460 transitions. [2024-11-09 10:52:29,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-09 10:52:29,043 INFO L175 Difference]: Start difference. First operand has 268 places, 496 transitions, 12701 flow. Second operand 44 states and 460 transitions. [2024-11-09 10:52:29,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1093 transitions, 27677 flow [2024-11-09 10:52:34,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1093 transitions, 27509 flow, removed 84 selfloop flow, removed 0 redundant places. [2024-11-09 10:52:34,687 INFO L231 Difference]: Finished difference. Result has 331 places, 732 transitions, 21572 flow [2024-11-09 10:52:34,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12693, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=21572, PETRI_PLACES=331, PETRI_TRANSITIONS=732} [2024-11-09 10:52:34,688 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 305 predicate places. [2024-11-09 10:52:34,688 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 732 transitions, 21572 flow [2024-11-09 10:52:34,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 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) [2024-11-09 10:52:34,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:34,688 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:34,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:34,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:34,889 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:34,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 81474871, now seen corresponding path program 16 times [2024-11-09 10:52:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543894308] [2024-11-09 10:52:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543894308] [2024-11-09 10:52:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543894308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:34,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692546878] [2024-11-09 10:52:34,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:34,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:34,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:34,972 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:34,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 10:52:35,024 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:35,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:35,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:52:35,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:35,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:35,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692546878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:35,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:35,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 10:52:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125691023] [2024-11-09 10:52:35,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:35,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:52:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:35,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:52:35,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:52:35,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:35,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 732 transitions, 21572 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-11-09 10:52:35,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:35,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:35,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:41,146 INFO L124 PetriNetUnfolderBase]: 11862/19406 cut-off events. [2024-11-09 10:52:41,146 INFO L125 PetriNetUnfolderBase]: For 1556284/1556284 co-relation queries the response was YES. [2024-11-09 10:52:41,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223898 conditions, 19406 events. 11862/19406 cut-off events. For 1556284/1556284 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 135517 event pairs, 601 based on Foata normal form. 71/19477 useless extension candidates. Maximal degree in co-relation 221932. Up to 6382 conditions per place. [2024-11-09 10:52:41,392 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 437 selfloop transitions, 857 changer transitions 74/1369 dead transitions. [2024-11-09 10:52:41,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1369 transitions, 40642 flow [2024-11-09 10:52:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:52:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:52:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 202 transitions. [2024-11-09 10:52:41,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-11-09 10:52:41,393 INFO L175 Difference]: Start difference. First operand has 331 places, 732 transitions, 21572 flow. Second operand 19 states and 202 transitions. [2024-11-09 10:52:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1369 transitions, 40642 flow [2024-11-09 10:52:53,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1369 transitions, 38779 flow, removed 556 selfloop flow, removed 16 redundant places. [2024-11-09 10:52:53,755 INFO L231 Difference]: Finished difference. Result has 342 places, 1098 transitions, 34657 flow [2024-11-09 10:52:53,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20702, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34657, PETRI_PLACES=342, PETRI_TRANSITIONS=1098} [2024-11-09 10:52:53,756 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-11-09 10:52:53,756 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 1098 transitions, 34657 flow [2024-11-09 10:52:53,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-11-09 10:52:53,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:53,757 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:53,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 10:52:53,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:53,957 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:52:53,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1829267253, now seen corresponding path program 17 times [2024-11-09 10:52:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:53,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477317392] [2024-11-09 10:52:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:54,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477317392] [2024-11-09 10:52:54,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477317392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698266046] [2024-11-09 10:52:54,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:54,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:54,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:54,032 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:52:54,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 10:52:54,083 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 10:52:54,083 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:54,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:52:54,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:54,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:54,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698266046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:54,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:54,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 10:52:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001093024] [2024-11-09 10:52:54,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:54,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:52:54,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:52:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:52:54,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 10:52:54,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1098 transitions, 34657 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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) [2024-11-09 10:52:54,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:54,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 10:52:54,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:53:03,503 INFO L124 PetriNetUnfolderBase]: 14885/24142 cut-off events. [2024-11-09 10:53:03,504 INFO L125 PetriNetUnfolderBase]: For 2106198/2106198 co-relation queries the response was YES. [2024-11-09 10:53:03,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287431 conditions, 24142 events. 14885/24142 cut-off events. For 2106198/2106198 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 171203 event pairs, 1253 based on Foata normal form. 58/24200 useless extension candidates. Maximal degree in co-relation 285448. Up to 6782 conditions per place. [2024-11-09 10:53:03,902 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 715 selfloop transitions, 768 changer transitions 9/1493 dead transitions. [2024-11-09 10:53:03,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1493 transitions, 47061 flow [2024-11-09 10:53:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 10:53:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 10:53:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 238 transitions. [2024-11-09 10:53:03,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-09 10:53:03,903 INFO L175 Difference]: Start difference. First operand has 342 places, 1098 transitions, 34657 flow. Second operand 21 states and 238 transitions. [2024-11-09 10:53:03,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1493 transitions, 47061 flow