./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:38:10,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:38:10,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:38:10,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:38:10,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:38:10,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:38:10,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:38:10,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:38:10,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:38:10,377 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:38:10,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:38:10,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:38:10,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:38:10,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:38:10,381 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:38:10,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:38:10,382 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:38:10,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:38:10,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:38:10,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:38:10,383 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:38:10,386 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:38:10,386 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:38:10,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:38:10,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:38:10,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:38:10,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:38:10,388 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:38:10,388 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:38:10,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:38:10,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:38:10,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:38:10,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:38:10,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:38:10,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:38:10,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:38:10,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:38:10,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:38:10,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:38:10,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:38:10,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:38:10,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:38:10,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-13 12:38:10,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:38:10,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:38:10,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:38:10,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:38:10,686 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:38:10,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-13 12:38:12,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:38:12,550 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:38:12,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-13 12:38:12,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3111f8a3/84716cbe1d324a34aa3492108d3edbe5/FLAGe40136ca1 [2024-10-13 12:38:12,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3111f8a3/84716cbe1d324a34aa3492108d3edbe5 [2024-10-13 12:38:12,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:38:12,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:38:12,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:38:12,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:38:12,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:38:12,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:12" (1/1) ... [2024-10-13 12:38:12,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a669ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12, skipping insertion in model container [2024-10-13 12:38:12,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:12" (1/1) ... [2024-10-13 12:38:12,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:38:13,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:38:13,221 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:38:13,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:38:13,269 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:38:13,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13 WrapperNode [2024-10-13 12:38:13,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:38:13,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:38:13,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:38:13,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:38:13,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,353 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 162 [2024-10-13 12:38:13,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:38:13,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:38:13,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:38:13,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:38:13,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,390 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 12:38:13,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:38:13,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:38:13,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:38:13,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:38:13,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (1/1) ... [2024-10-13 12:38:13,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:38:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:13,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:38:13,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:38:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:38:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:38:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:38:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:38:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:38:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:38:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:38:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:38:13,513 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:38:13,613 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:38:13,616 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:38:13,850 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:38:13,850 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:38:14,115 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:38:14,115 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:38:14,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:14 BoogieIcfgContainer [2024-10-13 12:38:14,116 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:38:14,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:38:14,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:38:14,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:38:14,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:38:12" (1/3) ... [2024-10-13 12:38:14,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a11f1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:14, skipping insertion in model container [2024-10-13 12:38:14,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:13" (2/3) ... [2024-10-13 12:38:14,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a11f1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:14, skipping insertion in model container [2024-10-13 12:38:14,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:14" (3/3) ... [2024-10-13 12:38:14,131 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-13 12:38:14,149 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:38:14,150 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:38:14,150 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:38:14,198 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:38:14,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-10-13 12:38:14,259 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-13 12:38:14,259 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:38:14,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-10-13 12:38:14,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-10-13 12:38:14,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-10-13 12:38:14,278 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:38:14,286 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;@838098c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:38:14,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:38:14,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:38:14,298 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-13 12:38:14,298 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:38:14,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:14,299 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:14,300 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)] === [2024-10-13 12:38:14,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1376092147, now seen corresponding path program 1 times [2024-10-13 12:38:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309766051] [2024-10-13 12:38:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:14,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:14,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:14,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309766051] [2024-10-13 12:38:14,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309766051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:14,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:14,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638951047] [2024-10-13 12:38:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:14,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:14,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:14,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:14,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:14,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:14,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:15,141 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-10-13 12:38:15,141 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-13 12:38:15,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 128 events. 67/128 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 14 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 222. Up to 72 conditions per place. [2024-10-13 12:38:15,147 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-10-13 12:38:15,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-10-13 12:38:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-10-13 12:38:15,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-10-13 12:38:15,159 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 5 states and 57 transitions. [2024-10-13 12:38:15,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-10-13 12:38:15,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:15,164 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-10-13 12:38:15,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-10-13 12:38:15,170 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-10-13 12:38:15,171 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-10-13 12:38:15,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:15,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:15,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:15,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:38:15,172 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)] === [2024-10-13 12:38:15,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2082207311, now seen corresponding path program 2 times [2024-10-13 12:38:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070325661] [2024-10-13 12:38:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070325661] [2024-10-13 12:38:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070325661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:15,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:15,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:15,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168718714] [2024-10-13 12:38:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:15,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:15,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:15,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:15,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:15,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:15,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:15,515 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-10-13 12:38:15,516 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-13 12:38:15,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 121 events. 66/121 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 317 event pairs, 11 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 325. Up to 72 conditions per place. [2024-10-13 12:38:15,520 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-10-13 12:38:15,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-10-13 12:38:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-10-13 12:38:15,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-10-13 12:38:15,521 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 54 transitions. [2024-10-13 12:38:15,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-10-13 12:38:15,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:15,523 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-10-13 12:38:15,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-10-13 12:38:15,524 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-10-13 12:38:15,524 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-10-13 12:38:15,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:15,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:15,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:15,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:38:15,525 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)] === [2024-10-13 12:38:15,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1488777393, now seen corresponding path program 1 times [2024-10-13 12:38:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:15,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205071277] [2024-10-13 12:38:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205071277] [2024-10-13 12:38:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205071277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:15,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011454643] [2024-10-13 12:38:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:15,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:15,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:15,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:15,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:15,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:15,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:15,666 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-10-13 12:38:15,667 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-10-13 12:38:15,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 140 events. 80/140 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 393 event pairs, 29 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 456. Up to 102 conditions per place. [2024-10-13 12:38:15,672 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-10-13 12:38:15,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-10-13 12:38:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-13 12:38:15,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:15,673 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 50 transitions. [2024-10-13 12:38:15,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-10-13 12:38:15,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:15,678 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-10-13 12:38:15,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-10-13 12:38:15,679 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2024-10-13 12:38:15,679 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-10-13 12:38:15,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:15,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:15,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:15,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:38:15,680 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)] === [2024-10-13 12:38:15,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1405972326, now seen corresponding path program 1 times [2024-10-13 12:38:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:15,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33481475] [2024-10-13 12:38:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:15,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:15,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33481475] [2024-10-13 12:38:15,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33481475] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:15,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190077685] [2024-10-13 12:38:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:15,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:15,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:15,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:15,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:38:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:15,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:38:15,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:15,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:15,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190077685] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:15,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-13 12:38:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649536265] [2024-10-13 12:38:15,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:15,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:38:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:38:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:38:15,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:15,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:15,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:15,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:15,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:16,105 INFO L124 PetriNetUnfolderBase]: 90/161 cut-off events. [2024-10-13 12:38:16,105 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-10-13 12:38:16,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 161 events. 90/161 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 473 event pairs, 15 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 542. Up to 55 conditions per place. [2024-10-13 12:38:16,106 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 42 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-10-13 12:38:16,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 385 flow [2024-10-13 12:38:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-10-13 12:38:16,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-13 12:38:16,110 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 7 states and 74 transitions. [2024-10-13 12:38:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 385 flow [2024-10-13 12:38:16,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 364 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:16,113 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 211 flow [2024-10-13 12:38:16,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-10-13 12:38:16,115 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2024-10-13 12:38:16,115 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 211 flow [2024-10-13 12:38:16,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:16,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:16,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:16,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:38:16,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:16,320 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)] === [2024-10-13 12:38:16,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2005550949, now seen corresponding path program 2 times [2024-10-13 12:38:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389098614] [2024-10-13 12:38:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:16,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389098614] [2024-10-13 12:38:16,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389098614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:16,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873427429] [2024-10-13 12:38:16,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:16,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:16,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:16,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:16,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:16,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:16,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:16,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:16,548 INFO L124 PetriNetUnfolderBase]: 89/163 cut-off events. [2024-10-13 12:38:16,548 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-10-13 12:38:16,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 163 events. 89/163 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 493 event pairs, 22 based on Foata normal form. 3/154 useless extension candidates. Maximal degree in co-relation 489. Up to 92 conditions per place. [2024-10-13 12:38:16,552 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 7 changer transitions 5/50 dead transitions. [2024-10-13 12:38:16,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 393 flow [2024-10-13 12:38:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-10-13 12:38:16,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-10-13 12:38:16,557 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 211 flow. Second operand 5 states and 54 transitions. [2024-10-13 12:38:16,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 393 flow [2024-10-13 12:38:16,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 368 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:16,566 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 208 flow [2024-10-13 12:38:16,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-10-13 12:38:16,566 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-10-13 12:38:16,566 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 208 flow [2024-10-13 12:38:16,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:16,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:16,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:16,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:38:16,567 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)] === [2024-10-13 12:38:16,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1198369694, now seen corresponding path program 2 times [2024-10-13 12:38:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:16,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248274475] [2024-10-13 12:38:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:16,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:16,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:16,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248274475] [2024-10-13 12:38:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248274475] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:16,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650987599] [2024-10-13 12:38:16,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:16,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:16,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:16,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:38:16,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:16,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:16,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:38:16,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:16,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650987599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:16,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 12:38:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315809692] [2024-10-13 12:38:16,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:16,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:38:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:16,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:38:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:38:16,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:16,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:16,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:16,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:17,038 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-10-13 12:38:17,041 INFO L125 PetriNetUnfolderBase]: For 446/446 co-relation queries the response was YES. [2024-10-13 12:38:17,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 187 events. 106/187 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 542 event pairs, 29 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 755. Up to 143 conditions per place. [2024-10-13 12:38:17,044 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 28 selfloop transitions, 21 changer transitions 1/51 dead transitions. [2024-10-13 12:38:17,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 428 flow [2024-10-13 12:38:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:38:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:38:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-10-13 12:38:17,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-13 12:38:17,048 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 208 flow. Second operand 6 states and 59 transitions. [2024-10-13 12:38:17,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 428 flow [2024-10-13 12:38:17,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 409 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:17,057 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 345 flow [2024-10-13 12:38:17,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-13 12:38:17,058 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-10-13 12:38:17,058 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 345 flow [2024-10-13 12:38:17,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:17,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:17,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:17,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:38:17,263 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 [2024-10-13 12:38:17,264 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)] === [2024-10-13 12:38:17,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1987061216, now seen corresponding path program 3 times [2024-10-13 12:38:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642780568] [2024-10-13 12:38:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642780568] [2024-10-13 12:38:17,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642780568] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:17,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:17,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534197373] [2024-10-13 12:38:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:17,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:17,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:17,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:17,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:17,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:17,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:17,423 INFO L124 PetriNetUnfolderBase]: 104/190 cut-off events. [2024-10-13 12:38:17,423 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2024-10-13 12:38:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 190 events. 104/190 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 561 event pairs, 27 based on Foata normal form. 2/187 useless extension candidates. Maximal degree in co-relation 812. Up to 118 conditions per place. [2024-10-13 12:38:17,426 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 33 selfloop transitions, 16 changer transitions 3/53 dead transitions. [2024-10-13 12:38:17,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 501 flow [2024-10-13 12:38:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-13 12:38:17,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:17,427 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 345 flow. Second operand 5 states and 50 transitions. [2024-10-13 12:38:17,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 501 flow [2024-10-13 12:38:17,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 461 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:17,437 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 332 flow [2024-10-13 12:38:17,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-13 12:38:17,437 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2024-10-13 12:38:17,438 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 332 flow [2024-10-13 12:38:17,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:17,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:17,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:17,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:38:17,438 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)] === [2024-10-13 12:38:17,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash -369403695, now seen corresponding path program 3 times [2024-10-13 12:38:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679647797] [2024-10-13 12:38:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679647797] [2024-10-13 12:38:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679647797] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321272427] [2024-10-13 12:38:17,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:17,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:17,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:17,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:38:17,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:38:17,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:17,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:38:17,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:17,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321272427] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:17,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:17,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-13 12:38:17,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653688484] [2024-10-13 12:38:17,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:17,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:38:17,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:17,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:38:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:38:17,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:17,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 332 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:17,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:17,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:17,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:17,886 INFO L124 PetriNetUnfolderBase]: 108/194 cut-off events. [2024-10-13 12:38:17,886 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-10-13 12:38:17,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 194 events. 108/194 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 570 event pairs, 12 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 888. Up to 60 conditions per place. [2024-10-13 12:38:17,889 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 22 changer transitions 0/64 dead transitions. [2024-10-13 12:38:17,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 589 flow [2024-10-13 12:38:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-10-13 12:38:17,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-10-13 12:38:17,891 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 332 flow. Second operand 7 states and 69 transitions. [2024-10-13 12:38:17,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 589 flow [2024-10-13 12:38:17,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 547 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:17,896 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 392 flow [2024-10-13 12:38:17,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=392, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-10-13 12:38:17,897 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-10-13 12:38:17,897 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 392 flow [2024-10-13 12:38:17,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:17,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:17,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:17,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:18,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:18,104 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)] === [2024-10-13 12:38:18,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash -376227406, now seen corresponding path program 4 times [2024-10-13 12:38:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179299626] [2024-10-13 12:38:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179299626] [2024-10-13 12:38:18,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179299626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:18,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410239234] [2024-10-13 12:38:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:18,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:18,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:18,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:18,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:18,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:18,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:18,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:18,248 INFO L124 PetriNetUnfolderBase]: 107/195 cut-off events. [2024-10-13 12:38:18,249 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-10-13 12:38:18,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 195 events. 107/195 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 607 event pairs, 32 based on Foata normal form. 2/197 useless extension candidates. Maximal degree in co-relation 817. Up to 154 conditions per place. [2024-10-13 12:38:18,252 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 15 changer transitions 2/52 dead transitions. [2024-10-13 12:38:18,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 531 flow [2024-10-13 12:38:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-10-13 12:38:18,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-13 12:38:18,255 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 392 flow. Second operand 5 states and 48 transitions. [2024-10-13 12:38:18,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 531 flow [2024-10-13 12:38:18,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 475 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:18,260 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 357 flow [2024-10-13 12:38:18,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-10-13 12:38:18,261 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 32 predicate places. [2024-10-13 12:38:18,261 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 357 flow [2024-10-13 12:38:18,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:18,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:18,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:18,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:38:18,262 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)] === [2024-10-13 12:38:18,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash -425271452, now seen corresponding path program 5 times [2024-10-13 12:38:18,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:18,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782611885] [2024-10-13 12:38:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:18,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782611885] [2024-10-13 12:38:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782611885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583718229] [2024-10-13 12:38:18,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:18,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:18,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:18,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:38:18,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:18,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:18,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:38:18,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:18,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:18,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583718229] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:18,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:18,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 12:38:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413003138] [2024-10-13 12:38:18,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:18,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:38:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:38:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:38:18,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:18,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 357 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:18,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:18,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:18,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:18,654 INFO L124 PetriNetUnfolderBase]: 108/199 cut-off events. [2024-10-13 12:38:18,654 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-10-13 12:38:18,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 199 events. 108/199 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 618 event pairs, 17 based on Foata normal form. 5/204 useless extension candidates. Maximal degree in co-relation 768. Up to 93 conditions per place. [2024-10-13 12:38:18,657 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 27 changer transitions 0/69 dead transitions. [2024-10-13 12:38:18,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 612 flow [2024-10-13 12:38:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-10-13 12:38:18,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-10-13 12:38:18,658 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 357 flow. Second operand 10 states and 91 transitions. [2024-10-13 12:38:18,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 612 flow [2024-10-13 12:38:18,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:18,662 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 422 flow [2024-10-13 12:38:18,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=422, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-10-13 12:38:18,663 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-10-13 12:38:18,663 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 422 flow [2024-10-13 12:38:18,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:18,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:18,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:18,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:18,867 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 [2024-10-13 12:38:18,868 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)] === [2024-10-13 12:38:18,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2070215271, now seen corresponding path program 4 times [2024-10-13 12:38:18,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520803428] [2024-10-13 12:38:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:18,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520803428] [2024-10-13 12:38:18,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520803428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:18,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:18,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930452822] [2024-10-13 12:38:18,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:18,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:18,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:18,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 422 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:18,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:18,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:18,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:19,008 INFO L124 PetriNetUnfolderBase]: 114/209 cut-off events. [2024-10-13 12:38:19,008 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-10-13 12:38:19,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 209 events. 114/209 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 657 event pairs, 32 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 987. Up to 165 conditions per place. [2024-10-13 12:38:19,011 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 42 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-10-13 12:38:19,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 604 flow [2024-10-13 12:38:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-13 12:38:19,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:19,013 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 422 flow. Second operand 5 states and 50 transitions. [2024-10-13 12:38:19,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 604 flow [2024-10-13 12:38:19,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 534 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:19,017 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 395 flow [2024-10-13 12:38:19,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-10-13 12:38:19,018 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-10-13 12:38:19,018 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 395 flow [2024-10-13 12:38:19,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:19,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:19,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 12:38:19,019 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)] === [2024-10-13 12:38:19,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1295731652, now seen corresponding path program 6 times [2024-10-13 12:38:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:19,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816044135] [2024-10-13 12:38:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:19,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816044135] [2024-10-13 12:38:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816044135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:19,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98526743] [2024-10-13 12:38:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:19,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:19,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:19,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:19,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:19,144 INFO L124 PetriNetUnfolderBase]: 110/197 cut-off events. [2024-10-13 12:38:19,145 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-10-13 12:38:19,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 197 events. 110/197 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 595 event pairs, 29 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 896. Up to 143 conditions per place. [2024-10-13 12:38:19,147 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 19 changer transitions 2/54 dead transitions. [2024-10-13 12:38:19,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 509 flow [2024-10-13 12:38:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-10-13 12:38:19,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-10-13 12:38:19,148 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 395 flow. Second operand 5 states and 47 transitions. [2024-10-13 12:38:19,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 509 flow [2024-10-13 12:38:19,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 473 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:19,152 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 378 flow [2024-10-13 12:38:19,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-10-13 12:38:19,152 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-10-13 12:38:19,153 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 378 flow [2024-10-13 12:38:19,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:19,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:19,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 12:38:19,153 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)] === [2024-10-13 12:38:19,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -350969669, now seen corresponding path program 5 times [2024-10-13 12:38:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598717795] [2024-10-13 12:38:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:19,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598717795] [2024-10-13 12:38:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598717795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354156337] [2024-10-13 12:38:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:19,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:19,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:38:19,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:19,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:19,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:38:19,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354156337] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:19,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:19,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 12:38:19,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338089691] [2024-10-13 12:38:19,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:19,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:38:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:19,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:38:19,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:38:19,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:19,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:19,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:19,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:19,530 INFO L124 PetriNetUnfolderBase]: 111/200 cut-off events. [2024-10-13 12:38:19,530 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2024-10-13 12:38:19,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 200 events. 111/200 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 615 event pairs, 15 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 856. Up to 72 conditions per place. [2024-10-13 12:38:19,536 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 30 changer transitions 0/69 dead transitions. [2024-10-13 12:38:19,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 626 flow [2024-10-13 12:38:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2024-10-13 12:38:19,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-10-13 12:38:19,538 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 378 flow. Second operand 10 states and 87 transitions. [2024-10-13 12:38:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 626 flow [2024-10-13 12:38:19,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 572 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:19,542 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 437 flow [2024-10-13 12:38:19,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=437, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-10-13 12:38:19,543 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 42 predicate places. [2024-10-13 12:38:19,543 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 437 flow [2024-10-13 12:38:19,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:19,543 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:19,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:19,747 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,SelfDestructingSolverStorable12 [2024-10-13 12:38:19,748 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)] === [2024-10-13 12:38:19,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash -243034563, now seen corresponding path program 6 times [2024-10-13 12:38:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:19,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418783207] [2024-10-13 12:38:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:19,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418783207] [2024-10-13 12:38:19,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418783207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:19,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:19,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845971744] [2024-10-13 12:38:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:19,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:19,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:19,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:19,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:19,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:19,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:19,892 INFO L124 PetriNetUnfolderBase]: 104/184 cut-off events. [2024-10-13 12:38:19,893 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-10-13 12:38:19,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 184 events. 104/184 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 543 event pairs, 26 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 861. Up to 134 conditions per place. [2024-10-13 12:38:19,895 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 17 changer transitions 3/58 dead transitions. [2024-10-13 12:38:19,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 563 flow [2024-10-13 12:38:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-10-13 12:38:19,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-10-13 12:38:19,896 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 437 flow. Second operand 5 states and 47 transitions. [2024-10-13 12:38:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 563 flow [2024-10-13 12:38:19,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 473 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-10-13 12:38:19,900 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 362 flow [2024-10-13 12:38:19,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-10-13 12:38:19,901 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-10-13 12:38:19,901 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 362 flow [2024-10-13 12:38:19,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:19,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:19,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 12:38:19,902 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)] === [2024-10-13 12:38:19,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash -884107482, now seen corresponding path program 1 times [2024-10-13 12:38:19,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:19,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561662264] [2024-10-13 12:38:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:19,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561662264] [2024-10-13 12:38:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561662264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412095236] [2024-10-13 12:38:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:20,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:20,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:20,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:38:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:20,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:20,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:20,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412095236] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:20,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:20,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-13 12:38:20,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145410538] [2024-10-13 12:38:20,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:20,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:20,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:20,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:20,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:20,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:20,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:20,673 INFO L124 PetriNetUnfolderBase]: 152/279 cut-off events. [2024-10-13 12:38:20,674 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-10-13 12:38:20,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 279 events. 152/279 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 980 event pairs, 13 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 1210. Up to 173 conditions per place. [2024-10-13 12:38:20,676 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 65 selfloop transitions, 19 changer transitions 4/89 dead transitions. [2024-10-13 12:38:20,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 755 flow [2024-10-13 12:38:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-10-13 12:38:20,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-13 12:38:20,677 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 362 flow. Second operand 7 states and 75 transitions. [2024-10-13 12:38:20,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 755 flow [2024-10-13 12:38:20,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:20,682 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 494 flow [2024-10-13 12:38:20,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-10-13 12:38:20,683 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2024-10-13 12:38:20,683 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 494 flow [2024-10-13 12:38:20,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:20,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:20,684 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:20,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:20,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 12:38:20,885 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)] === [2024-10-13 12:38:20,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:20,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1058757058, now seen corresponding path program 2 times [2024-10-13 12:38:20,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:20,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507587761] [2024-10-13 12:38:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507587761] [2024-10-13 12:38:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507587761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157215188] [2024-10-13 12:38:21,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:21,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:21,054 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) [2024-10-13 12:38:21,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 12:38:21,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:21,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:21,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:21,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157215188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:21,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-13 12:38:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056397039] [2024-10-13 12:38:21,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:21,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:21,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:21,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:21,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:21,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:21,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:21,590 INFO L124 PetriNetUnfolderBase]: 150/271 cut-off events. [2024-10-13 12:38:21,590 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2024-10-13 12:38:21,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 271 events. 150/271 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 935 event pairs, 13 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 1318. Up to 193 conditions per place. [2024-10-13 12:38:21,593 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 61 selfloop transitions, 20 changer transitions 4/86 dead transitions. [2024-10-13 12:38:21,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 782 flow [2024-10-13 12:38:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-10-13 12:38:21,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:21,596 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 494 flow. Second operand 7 states and 70 transitions. [2024-10-13 12:38:21,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 782 flow [2024-10-13 12:38:21,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 734 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:21,601 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 564 flow [2024-10-13 12:38:21,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-10-13 12:38:21,601 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 48 predicate places. [2024-10-13 12:38:21,601 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 564 flow [2024-10-13 12:38:21,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:21,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:21,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:21,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 12:38:21,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:21,807 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)] === [2024-10-13 12:38:21,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash -268386566, now seen corresponding path program 3 times [2024-10-13 12:38:21,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:21,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874340144] [2024-10-13 12:38:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874340144] [2024-10-13 12:38:21,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874340144] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033976992] [2024-10-13 12:38:21,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:21,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:22,000 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) [2024-10-13 12:38:22,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 12:38:22,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:22,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:22,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:22,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033976992] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:22,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-13 12:38:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708740561] [2024-10-13 12:38:22,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:22,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:22,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:22,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:22,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:22,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 564 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:22,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:22,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:22,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:22,621 INFO L124 PetriNetUnfolderBase]: 148/263 cut-off events. [2024-10-13 12:38:22,625 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-10-13 12:38:22,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 263 events. 148/263 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 891 event pairs, 13 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 1316. Up to 173 conditions per place. [2024-10-13 12:38:22,628 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 60 selfloop transitions, 21 changer transitions 4/86 dead transitions. [2024-10-13 12:38:22,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 816 flow [2024-10-13 12:38:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:22,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-10-13 12:38:22,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:22,630 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 564 flow. Second operand 7 states and 70 transitions. [2024-10-13 12:38:22,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 816 flow [2024-10-13 12:38:22,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 774 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:22,642 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 604 flow [2024-10-13 12:38:22,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-13 12:38:22,643 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 52 predicate places. [2024-10-13 12:38:22,643 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 604 flow [2024-10-13 12:38:22,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:22,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:22,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:22,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 12:38:22,844 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,SelfDestructingSolverStorable16 [2024-10-13 12:38:22,844 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)] === [2024-10-13 12:38:22,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 465017658, now seen corresponding path program 4 times [2024-10-13 12:38:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365048219] [2024-10-13 12:38:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365048219] [2024-10-13 12:38:23,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365048219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:23,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530600087] [2024-10-13 12:38:23,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:23,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:23,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:23,124 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) [2024-10-13 12:38:23,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 12:38:23,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:23,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:23,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:23,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530600087] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:23,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-13 12:38:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203092166] [2024-10-13 12:38:23,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:23,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:23,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:23,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 604 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) [2024-10-13 12:38:23,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:23,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:23,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:23,911 INFO L124 PetriNetUnfolderBase]: 173/306 cut-off events. [2024-10-13 12:38:23,912 INFO L125 PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES. [2024-10-13 12:38:23,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 306 events. 173/306 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1098 event pairs, 12 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 1545. Up to 247 conditions per place. [2024-10-13 12:38:23,916 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 70 selfloop transitions, 19 changer transitions 4/94 dead transitions. [2024-10-13 12:38:23,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 925 flow [2024-10-13 12:38:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-10-13 12:38:23,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-13 12:38:23,921 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 604 flow. Second operand 7 states and 64 transitions. [2024-10-13 12:38:23,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 925 flow [2024-10-13 12:38:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 868 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:23,928 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 719 flow [2024-10-13 12:38:23,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=719, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-10-13 12:38:23,930 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 57 predicate places. [2024-10-13 12:38:23,930 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 719 flow [2024-10-13 12:38:23,930 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) [2024-10-13 12:38:23,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:23,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:23,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 12:38:24,131 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,SelfDestructingSolverStorable17 [2024-10-13 12:38:24,132 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)] === [2024-10-13 12:38:24,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1335848292, now seen corresponding path program 5 times [2024-10-13 12:38:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:24,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740541970] [2024-10-13 12:38:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740541970] [2024-10-13 12:38:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740541970] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24682695] [2024-10-13 12:38:24,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:24,385 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) [2024-10-13 12:38:24,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 12:38:24,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:38:24,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:24,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:24,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24682695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:24,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:24,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-13 12:38:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047632902] [2024-10-13 12:38:24,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:24,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:24,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:24,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 719 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) [2024-10-13 12:38:24,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:24,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:24,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:25,276 INFO L124 PetriNetUnfolderBase]: 185/331 cut-off events. [2024-10-13 12:38:25,276 INFO L125 PetriNetUnfolderBase]: For 1341/1341 co-relation queries the response was YES. [2024-10-13 12:38:25,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 331 events. 185/331 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1231 event pairs, 12 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1746. Up to 250 conditions per place. [2024-10-13 12:38:25,281 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 77 selfloop transitions, 20 changer transitions 4/102 dead transitions. [2024-10-13 12:38:25,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 102 transitions, 1055 flow [2024-10-13 12:38:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-10-13 12:38:25,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-10-13 12:38:25,286 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 719 flow. Second operand 7 states and 69 transitions. [2024-10-13 12:38:25,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 102 transitions, 1055 flow [2024-10-13 12:38:25,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 1006 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:25,301 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 790 flow [2024-10-13 12:38:25,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2024-10-13 12:38:25,302 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 63 predicate places. [2024-10-13 12:38:25,302 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 790 flow [2024-10-13 12:38:25,302 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) [2024-10-13 12:38:25,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:25,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:25,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 12:38:25,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:25,507 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)] === [2024-10-13 12:38:25,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1252731402, now seen corresponding path program 6 times [2024-10-13 12:38:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962316195] [2024-10-13 12:38:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:25,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:25,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962316195] [2024-10-13 12:38:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962316195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268977107] [2024-10-13 12:38:25,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:25,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:25,840 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) [2024-10-13 12:38:25,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 12:38:25,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:25,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:25,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:25,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268977107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:26,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 12:38:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779907070] [2024-10-13 12:38:26,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:26,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:38:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:38:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:38:26,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:26,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 790 flow. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:26,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:26,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:26,545 INFO L124 PetriNetUnfolderBase]: 183/323 cut-off events. [2024-10-13 12:38:26,545 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2024-10-13 12:38:26,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 323 events. 183/323 cut-off events. For 1616/1616 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1182 event pairs, 12 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1751. Up to 250 conditions per place. [2024-10-13 12:38:26,550 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 75 selfloop transitions, 21 changer transitions 4/101 dead transitions. [2024-10-13 12:38:26,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 1078 flow [2024-10-13 12:38:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:26,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-10-13 12:38:26,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-10-13 12:38:26,552 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 790 flow. Second operand 7 states and 67 transitions. [2024-10-13 12:38:26,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 1078 flow [2024-10-13 12:38:26,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 1006 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:26,562 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 816 flow [2024-10-13 12:38:26,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=816, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-13 12:38:26,563 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2024-10-13 12:38:26,563 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 816 flow [2024-10-13 12:38:26,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:26,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:26,564 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:26,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:26,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:26,769 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)] === [2024-10-13 12:38:26,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash -526255113, now seen corresponding path program 7 times [2024-10-13 12:38:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005817206] [2024-10-13 12:38:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005817206] [2024-10-13 12:38:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005817206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123508369] [2024-10-13 12:38:26,841 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:26,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:26,843 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) [2024-10-13 12:38:26,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 12:38:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:26,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:26,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123508369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:26,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 12:38:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871395766] [2024-10-13 12:38:26,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:26,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:26,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:26,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 816 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:26,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:26,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:26,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:27,184 INFO L124 PetriNetUnfolderBase]: 210/369 cut-off events. [2024-10-13 12:38:27,184 INFO L125 PetriNetUnfolderBase]: For 2177/2177 co-relation queries the response was YES. [2024-10-13 12:38:27,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 369 events. 210/369 cut-off events. For 2177/2177 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1403 event pairs, 20 based on Foata normal form. 5/374 useless extension candidates. Maximal degree in co-relation 2036. Up to 101 conditions per place. [2024-10-13 12:38:27,188 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 80 selfloop transitions, 50 changer transitions 0/131 dead transitions. [2024-10-13 12:38:27,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1433 flow [2024-10-13 12:38:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-10-13 12:38:27,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:27,190 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 816 flow. Second operand 10 states and 100 transitions. [2024-10-13 12:38:27,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1433 flow [2024-10-13 12:38:27,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1366 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:27,199 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 1065 flow [2024-10-13 12:38:27,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1065, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2024-10-13 12:38:27,201 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 79 predicate places. [2024-10-13 12:38:27,201 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 1065 flow [2024-10-13 12:38:27,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:27,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:27,201 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:27,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:27,402 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,SelfDestructingSolverStorable20 [2024-10-13 12:38:27,402 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)] === [2024-10-13 12:38:27,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 37067966, now seen corresponding path program 8 times [2024-10-13 12:38:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788879698] [2024-10-13 12:38:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788879698] [2024-10-13 12:38:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788879698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578529928] [2024-10-13 12:38:27,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:27,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:27,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:27,475 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) [2024-10-13 12:38:27,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 12:38:27,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:27,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:27,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:27,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:27,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578529928] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:27,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:27,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 12:38:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664769804] [2024-10-13 12:38:27,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:27,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:27,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:27,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:27,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:27,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:27,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 1065 flow. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:27,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:27,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:27,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:27,738 INFO L124 PetriNetUnfolderBase]: 211/376 cut-off events. [2024-10-13 12:38:27,738 INFO L125 PetriNetUnfolderBase]: For 3089/3089 co-relation queries the response was YES. [2024-10-13 12:38:27,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 376 events. 211/376 cut-off events. For 3089/3089 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1478 event pairs, 35 based on Foata normal form. 3/379 useless extension candidates. Maximal degree in co-relation 2270. Up to 165 conditions per place. [2024-10-13 12:38:27,741 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 79 selfloop transitions, 34 changer transitions 9/123 dead transitions. [2024-10-13 12:38:27,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 1508 flow [2024-10-13 12:38:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-10-13 12:38:27,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-13 12:38:27,742 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 1065 flow. Second operand 7 states and 72 transitions. [2024-10-13 12:38:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 1508 flow [2024-10-13 12:38:27,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 1421 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:27,753 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 1027 flow [2024-10-13 12:38:27,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1027, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-10-13 12:38:27,753 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2024-10-13 12:38:27,753 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 1027 flow [2024-10-13 12:38:27,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:27,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:27,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:27,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:27,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 12:38:27,955 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)] === [2024-10-13 12:38:27,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 99726495, now seen corresponding path program 9 times [2024-10-13 12:38:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881707627] [2024-10-13 12:38:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881707627] [2024-10-13 12:38:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881707627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689866408] [2024-10-13 12:38:28,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:28,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:28,018 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) [2024-10-13 12:38:28,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 12:38:28,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:38:28,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:28,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:28,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689866408] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:28,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 12:38:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052152927] [2024-10-13 12:38:28,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:28,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:28,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:28,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:28,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 1027 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:28,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:28,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:28,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:28,338 INFO L124 PetriNetUnfolderBase]: 249/432 cut-off events. [2024-10-13 12:38:28,338 INFO L125 PetriNetUnfolderBase]: For 4341/4341 co-relation queries the response was YES. [2024-10-13 12:38:28,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 432 events. 249/432 cut-off events. For 4341/4341 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1663 event pairs, 28 based on Foata normal form. 17/449 useless extension candidates. Maximal degree in co-relation 2641. Up to 143 conditions per place. [2024-10-13 12:38:28,342 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 81 selfloop transitions, 64 changer transitions 0/146 dead transitions. [2024-10-13 12:38:28,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 1797 flow [2024-10-13 12:38:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:38:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:38:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-10-13 12:38:28,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-13 12:38:28,343 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 1027 flow. Second operand 14 states and 126 transitions. [2024-10-13 12:38:28,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 1797 flow [2024-10-13 12:38:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 1719 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-13 12:38:28,353 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1483 flow [2024-10-13 12:38:28,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1483, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-10-13 12:38:28,353 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 97 predicate places. [2024-10-13 12:38:28,353 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1483 flow [2024-10-13 12:38:28,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:28,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:28,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:28,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:28,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:28,555 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)] === [2024-10-13 12:38:28,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 555431037, now seen corresponding path program 10 times [2024-10-13 12:38:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120188041] [2024-10-13 12:38:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120188041] [2024-10-13 12:38:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120188041] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474905795] [2024-10-13 12:38:28,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:28,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:28,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:28,616 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) [2024-10-13 12:38:28,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 12:38:28,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:28,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:28,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:28,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474905795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:28,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:28,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:28,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767684540] [2024-10-13 12:38:28,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:28,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:28,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:28,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:28,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:28,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:28,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 1483 flow. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:28,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:28,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:28,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:29,000 INFO L124 PetriNetUnfolderBase]: 300/515 cut-off events. [2024-10-13 12:38:29,001 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-10-13 12:38:29,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 515 events. 300/515 cut-off events. For 8634/8634 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2044 event pairs, 27 based on Foata normal form. 12/527 useless extension candidates. Maximal degree in co-relation 3616. Up to 177 conditions per place. [2024-10-13 12:38:29,005 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 79 selfloop transitions, 94 changer transitions 0/174 dead transitions. [2024-10-13 12:38:29,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 174 transitions, 2495 flow [2024-10-13 12:38:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:38:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:38:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-10-13 12:38:29,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-10-13 12:38:29,006 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1483 flow. Second operand 16 states and 143 transitions. [2024-10-13 12:38:29,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 174 transitions, 2495 flow [2024-10-13 12:38:29,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 174 transitions, 2211 flow, removed 133 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:29,023 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 1984 flow [2024-10-13 12:38:29,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1984, PETRI_PLACES=139, PETRI_TRANSITIONS=146} [2024-10-13 12:38:29,024 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 117 predicate places. [2024-10-13 12:38:29,024 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 1984 flow [2024-10-13 12:38:29,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:29,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:29,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:29,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:29,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:29,225 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)] === [2024-10-13 12:38:29,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 963285089, now seen corresponding path program 11 times [2024-10-13 12:38:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172643534] [2024-10-13 12:38:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172643534] [2024-10-13 12:38:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172643534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134381234] [2024-10-13 12:38:29,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:29,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:29,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:29,283 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) [2024-10-13 12:38:29,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 12:38:29,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:38:29,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:29,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:29,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:29,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134381234] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:29,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:29,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692172626] [2024-10-13 12:38:29,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:29,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:29,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:29,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:29,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:29,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 146 transitions, 1984 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:29,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:29,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:29,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:29,634 INFO L124 PetriNetUnfolderBase]: 300/519 cut-off events. [2024-10-13 12:38:29,634 INFO L125 PetriNetUnfolderBase]: For 8573/8573 co-relation queries the response was YES. [2024-10-13 12:38:29,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 519 events. 300/519 cut-off events. For 8573/8573 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2116 event pairs, 43 based on Foata normal form. 4/523 useless extension candidates. Maximal degree in co-relation 3826. Up to 233 conditions per place. [2024-10-13 12:38:29,640 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 88 selfloop transitions, 79 changer transitions 2/170 dead transitions. [2024-10-13 12:38:29,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 170 transitions, 2569 flow [2024-10-13 12:38:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:38:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:38:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-13 12:38:29,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-10-13 12:38:29,642 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 1984 flow. Second operand 13 states and 113 transitions. [2024-10-13 12:38:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 170 transitions, 2569 flow [2024-10-13 12:38:29,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 170 transitions, 2251 flow, removed 115 selfloop flow, removed 6 redundant places. [2024-10-13 12:38:29,677 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 1836 flow [2024-10-13 12:38:29,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1836, PETRI_PLACES=147, PETRI_TRANSITIONS=146} [2024-10-13 12:38:29,678 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-10-13 12:38:29,678 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 1836 flow [2024-10-13 12:38:29,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:29,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:29,678 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:29,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 12:38:29,879 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,SelfDestructingSolverStorable24 [2024-10-13 12:38:29,879 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:29,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1649435364, now seen corresponding path program 12 times [2024-10-13 12:38:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:29,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879291418] [2024-10-13 12:38:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:29,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:29,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879291418] [2024-10-13 12:38:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879291418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:29,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636888908] [2024-10-13 12:38:29,935 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:29,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:29,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:29,937 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) [2024-10-13 12:38:29,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 12:38:29,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:29,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:29,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:29,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636888908] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:30,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:30,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:30,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166937143] [2024-10-13 12:38:30,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:30,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:30,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:30,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 1836 flow. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:30,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:30,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:30,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:30,271 INFO L124 PetriNetUnfolderBase]: 346/589 cut-off events. [2024-10-13 12:38:30,271 INFO L125 PetriNetUnfolderBase]: For 12313/12313 co-relation queries the response was YES. [2024-10-13 12:38:30,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 589 events. 346/589 cut-off events. For 12313/12313 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2428 event pairs, 67 based on Foata normal form. 12/601 useless extension candidates. Maximal degree in co-relation 4492. Up to 396 conditions per place. [2024-10-13 12:38:30,281 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 128 selfloop transitions, 65 changer transitions 2/196 dead transitions. [2024-10-13 12:38:30,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 196 transitions, 3007 flow [2024-10-13 12:38:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:38:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:38:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-10-13 12:38:30,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-10-13 12:38:30,289 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 1836 flow. Second operand 12 states and 111 transitions. [2024-10-13 12:38:30,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 196 transitions, 3007 flow [2024-10-13 12:38:30,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 196 transitions, 2791 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-10-13 12:38:30,344 INFO L231 Difference]: Finished difference. Result has 151 places, 170 transitions, 2422 flow [2024-10-13 12:38:30,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2422, PETRI_PLACES=151, PETRI_TRANSITIONS=170} [2024-10-13 12:38:30,349 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 129 predicate places. [2024-10-13 12:38:30,349 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 170 transitions, 2422 flow [2024-10-13 12:38:30,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:30,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:30,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:30,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:30,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 12:38:30,550 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:30,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1904479196, now seen corresponding path program 13 times [2024-10-13 12:38:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599843086] [2024-10-13 12:38:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599843086] [2024-10-13 12:38:30,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599843086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223370198] [2024-10-13 12:38:30,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:30,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:30,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:30,650 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) [2024-10-13 12:38:30,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 12:38:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:30,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:30,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223370198] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:30,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:30,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:30,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656180899] [2024-10-13 12:38:30,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:30,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:30,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:30,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 170 transitions, 2422 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:30,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:30,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:31,043 INFO L124 PetriNetUnfolderBase]: 347/587 cut-off events. [2024-10-13 12:38:31,043 INFO L125 PetriNetUnfolderBase]: For 10832/10832 co-relation queries the response was YES. [2024-10-13 12:38:31,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 587 events. 347/587 cut-off events. For 10832/10832 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2377 event pairs, 70 based on Foata normal form. 8/595 useless extension candidates. Maximal degree in co-relation 4468. Up to 403 conditions per place. [2024-10-13 12:38:31,050 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 128 selfloop transitions, 71 changer transitions 0/200 dead transitions. [2024-10-13 12:38:31,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 200 transitions, 3044 flow [2024-10-13 12:38:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 146 transitions. [2024-10-13 12:38:31,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-10-13 12:38:31,052 INFO L175 Difference]: Start difference. First operand has 151 places, 170 transitions, 2422 flow. Second operand 17 states and 146 transitions. [2024-10-13 12:38:31,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 200 transitions, 3044 flow [2024-10-13 12:38:31,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 200 transitions, 2629 flow, removed 167 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:31,082 INFO L231 Difference]: Finished difference. Result has 166 places, 176 transitions, 2268 flow [2024-10-13 12:38:31,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2268, PETRI_PLACES=166, PETRI_TRANSITIONS=176} [2024-10-13 12:38:31,082 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 144 predicate places. [2024-10-13 12:38:31,082 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 176 transitions, 2268 flow [2024-10-13 12:38:31,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:31,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:31,083 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:31,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-13 12:38:31,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 12:38:31,283 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:31,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2129379204, now seen corresponding path program 14 times [2024-10-13 12:38:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:31,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921378110] [2024-10-13 12:38:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921378110] [2024-10-13 12:38:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921378110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513404179] [2024-10-13 12:38:31,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:31,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:31,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:31,381 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) [2024-10-13 12:38:31,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 12:38:31,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:31,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:31,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:31,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513404179] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:31,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 12:38:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361180045] [2024-10-13 12:38:31,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:31,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:31,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:31,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 176 transitions, 2268 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:31,805 INFO L124 PetriNetUnfolderBase]: 346/589 cut-off events. [2024-10-13 12:38:31,805 INFO L125 PetriNetUnfolderBase]: For 8205/8205 co-relation queries the response was YES. [2024-10-13 12:38:31,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 589 events. 346/589 cut-off events. For 8205/8205 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2397 event pairs, 74 based on Foata normal form. 3/592 useless extension candidates. Maximal degree in co-relation 4213. Up to 422 conditions per place. [2024-10-13 12:38:31,823 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 138 selfloop transitions, 47 changer transitions 8/194 dead transitions. [2024-10-13 12:38:31,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 194 transitions, 2770 flow [2024-10-13 12:38:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-10-13 12:38:31,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-13 12:38:31,824 INFO L175 Difference]: Start difference. First operand has 166 places, 176 transitions, 2268 flow. Second operand 10 states and 90 transitions. [2024-10-13 12:38:31,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 194 transitions, 2770 flow [2024-10-13 12:38:31,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 194 transitions, 2549 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-10-13 12:38:31,884 INFO L231 Difference]: Finished difference. Result has 164 places, 172 transitions, 2083 flow [2024-10-13 12:38:31,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2083, PETRI_PLACES=164, PETRI_TRANSITIONS=172} [2024-10-13 12:38:31,888 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 142 predicate places. [2024-10-13 12:38:31,888 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 172 transitions, 2083 flow [2024-10-13 12:38:31,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:31,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:31,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:31,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:32,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:32,090 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:32,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2140594117, now seen corresponding path program 15 times [2024-10-13 12:38:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511432679] [2024-10-13 12:38:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:32,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511432679] [2024-10-13 12:38:32,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511432679] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:32,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622887277] [2024-10-13 12:38:32,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:32,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:32,162 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:32,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 12:38:32,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:32,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:32,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:32,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:32,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622887277] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:32,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:32,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100321335] [2024-10-13 12:38:32,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:32,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:32,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:32,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:32,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 172 transitions, 2083 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:32,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:32,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:32,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:32,583 INFO L124 PetriNetUnfolderBase]: 450/748 cut-off events. [2024-10-13 12:38:32,584 INFO L125 PetriNetUnfolderBase]: For 12567/12567 co-relation queries the response was YES. [2024-10-13 12:38:32,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5480 conditions, 748 events. 450/748 cut-off events. For 12567/12567 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3163 event pairs, 33 based on Foata normal form. 12/760 useless extension candidates. Maximal degree in co-relation 5398. Up to 242 conditions per place. [2024-10-13 12:38:32,592 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 100 selfloop transitions, 154 changer transitions 0/255 dead transitions. [2024-10-13 12:38:32,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 255 transitions, 3653 flow [2024-10-13 12:38:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2024-10-13 12:38:32,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4441176470588235 [2024-10-13 12:38:32,594 INFO L175 Difference]: Start difference. First operand has 164 places, 172 transitions, 2083 flow. Second operand 17 states and 151 transitions. [2024-10-13 12:38:32,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 255 transitions, 3653 flow [2024-10-13 12:38:32,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 255 transitions, 3532 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-10-13 12:38:32,638 INFO L231 Difference]: Finished difference. Result has 177 places, 228 transitions, 3384 flow [2024-10-13 12:38:32,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3384, PETRI_PLACES=177, PETRI_TRANSITIONS=228} [2024-10-13 12:38:32,639 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 155 predicate places. [2024-10-13 12:38:32,639 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 228 transitions, 3384 flow [2024-10-13 12:38:32,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:32,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:32,640 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:32,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-13 12:38:32,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 12:38:32,841 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:32,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash -99297187, now seen corresponding path program 16 times [2024-10-13 12:38:32,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:32,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867180523] [2024-10-13 12:38:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:32,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867180523] [2024-10-13 12:38:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867180523] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085254462] [2024-10-13 12:38:32,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:32,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:32,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:32,913 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:32,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 12:38:32,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:32,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:32,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:32,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:33,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085254462] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:33,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:33,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:33,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216166233] [2024-10-13 12:38:33,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:33,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:33,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:33,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 228 transitions, 3384 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 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) [2024-10-13 12:38:33,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:33,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:33,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:33,341 INFO L124 PetriNetUnfolderBase]: 450/752 cut-off events. [2024-10-13 12:38:33,342 INFO L125 PetriNetUnfolderBase]: For 14343/14343 co-relation queries the response was YES. [2024-10-13 12:38:33,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 752 events. 450/752 cut-off events. For 14343/14343 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3225 event pairs, 53 based on Foata normal form. 4/756 useless extension candidates. Maximal degree in co-relation 6082. Up to 314 conditions per place. [2024-10-13 12:38:33,350 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 118 selfloop transitions, 130 changer transitions 2/251 dead transitions. [2024-10-13 12:38:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 251 transitions, 4112 flow [2024-10-13 12:38:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:38:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:38:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 122 transitions. [2024-10-13 12:38:33,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-10-13 12:38:33,352 INFO L175 Difference]: Start difference. First operand has 177 places, 228 transitions, 3384 flow. Second operand 14 states and 122 transitions. [2024-10-13 12:38:33,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 251 transitions, 4112 flow [2024-10-13 12:38:33,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 251 transitions, 3750 flow, removed 163 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:33,420 INFO L231 Difference]: Finished difference. Result has 188 places, 228 transitions, 3295 flow [2024-10-13 12:38:33,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3295, PETRI_PLACES=188, PETRI_TRANSITIONS=228} [2024-10-13 12:38:33,421 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 166 predicate places. [2024-10-13 12:38:33,421 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 228 transitions, 3295 flow [2024-10-13 12:38:33,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 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) [2024-10-13 12:38:33,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:33,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:33,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-13 12:38:33,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:33,623 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:33,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1390107809, now seen corresponding path program 17 times [2024-10-13 12:38:33,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:33,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102612033] [2024-10-13 12:38:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:33,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102612033] [2024-10-13 12:38:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102612033] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744189218] [2024-10-13 12:38:33,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:33,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:33,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:33,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 12:38:33,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:33,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:33,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:33,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744189218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:33,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 12:38:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050892704] [2024-10-13 12:38:33,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:33,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:33,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:33,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:33,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 228 transitions, 3295 flow. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:33,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:33,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:33,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:34,166 INFO L124 PetriNetUnfolderBase]: 492/814 cut-off events. [2024-10-13 12:38:34,166 INFO L125 PetriNetUnfolderBase]: For 14329/14329 co-relation queries the response was YES. [2024-10-13 12:38:34,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 814 events. 492/814 cut-off events. For 14329/14329 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3510 event pairs, 54 based on Foata normal form. 4/818 useless extension candidates. Maximal degree in co-relation 6485. Up to 330 conditions per place. [2024-10-13 12:38:34,174 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 131 selfloop transitions, 140 changer transitions 4/276 dead transitions. [2024-10-13 12:38:34,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 276 transitions, 4445 flow [2024-10-13 12:38:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:38:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:38:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 126 transitions. [2024-10-13 12:38:34,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-10-13 12:38:34,176 INFO L175 Difference]: Start difference. First operand has 188 places, 228 transitions, 3295 flow. Second operand 15 states and 126 transitions. [2024-10-13 12:38:34,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 276 transitions, 4445 flow [2024-10-13 12:38:34,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 276 transitions, 4154 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-10-13 12:38:34,235 INFO L231 Difference]: Finished difference. Result has 195 places, 249 transitions, 3746 flow [2024-10-13 12:38:34,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3746, PETRI_PLACES=195, PETRI_TRANSITIONS=249} [2024-10-13 12:38:34,236 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 173 predicate places. [2024-10-13 12:38:34,236 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 249 transitions, 3746 flow [2024-10-13 12:38:34,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:34,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:34,236 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:34,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:34,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:34,437 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:34,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1176393603, now seen corresponding path program 18 times [2024-10-13 12:38:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:34,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382169078] [2024-10-13 12:38:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:34,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382169078] [2024-10-13 12:38:34,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382169078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:34,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153955551] [2024-10-13 12:38:34,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:34,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:34,549 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:34,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 12:38:34,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:34,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:34,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:34,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153955551] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:34,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 12:38:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122157734] [2024-10-13 12:38:34,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:34,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:34,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:34,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 249 transitions, 3746 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 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) [2024-10-13 12:38:34,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:34,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:34,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:35,309 INFO L124 PetriNetUnfolderBase]: 587/973 cut-off events. [2024-10-13 12:38:35,310 INFO L125 PetriNetUnfolderBase]: For 19818/19818 co-relation queries the response was YES. [2024-10-13 12:38:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 973 events. 587/973 cut-off events. For 19818/19818 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4410 event pairs, 38 based on Foata normal form. 8/981 useless extension candidates. Maximal degree in co-relation 8021. Up to 325 conditions per place. [2024-10-13 12:38:35,319 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 164 selfloop transitions, 171 changer transitions 0/336 dead transitions. [2024-10-13 12:38:35,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 336 transitions, 5530 flow [2024-10-13 12:38:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:38:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:38:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 191 transitions. [2024-10-13 12:38:35,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4152173913043478 [2024-10-13 12:38:35,320 INFO L175 Difference]: Start difference. First operand has 195 places, 249 transitions, 3746 flow. Second operand 23 states and 191 transitions. [2024-10-13 12:38:35,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 336 transitions, 5530 flow [2024-10-13 12:38:35,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 336 transitions, 5320 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-10-13 12:38:35,385 INFO L231 Difference]: Finished difference. Result has 215 places, 299 transitions, 4900 flow [2024-10-13 12:38:35,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3559, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4900, PETRI_PLACES=215, PETRI_TRANSITIONS=299} [2024-10-13 12:38:35,385 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 193 predicate places. [2024-10-13 12:38:35,386 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 299 transitions, 4900 flow [2024-10-13 12:38:35,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 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) [2024-10-13 12:38:35,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:35,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:35,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:35,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:35,587 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:35,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1345896383, now seen corresponding path program 19 times [2024-10-13 12:38:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:35,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437843058] [2024-10-13 12:38:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:35,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:35,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437843058] [2024-10-13 12:38:35,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437843058] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:35,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959249823] [2024-10-13 12:38:35,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:35,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:35,668 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:35,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 12:38:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:35,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:35,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:35,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959249823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:35,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:35,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 12:38:35,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140973368] [2024-10-13 12:38:35,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:35,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:35,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:35,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 299 transitions, 4900 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:35,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:35,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:35,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:36,171 INFO L124 PetriNetUnfolderBase]: 632/1044 cut-off events. [2024-10-13 12:38:36,171 INFO L125 PetriNetUnfolderBase]: For 31386/31386 co-relation queries the response was YES. [2024-10-13 12:38:36,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9505 conditions, 1044 events. 632/1044 cut-off events. For 31386/31386 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4764 event pairs, 147 based on Foata normal form. 24/1068 useless extension candidates. Maximal degree in co-relation 9350. Up to 896 conditions per place. [2024-10-13 12:38:36,182 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 292 selfloop transitions, 59 changer transitions 0/352 dead transitions. [2024-10-13 12:38:36,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 352 transitions, 6572 flow [2024-10-13 12:38:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 12:38:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 12:38:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-10-13 12:38:36,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-10-13 12:38:36,183 INFO L175 Difference]: Start difference. First operand has 215 places, 299 transitions, 4900 flow. Second operand 19 states and 164 transitions. [2024-10-13 12:38:36,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 352 transitions, 6572 flow [2024-10-13 12:38:36,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 352 transitions, 6365 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-10-13 12:38:36,271 INFO L231 Difference]: Finished difference. Result has 235 places, 324 transitions, 5667 flow [2024-10-13 12:38:36,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4693, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5667, PETRI_PLACES=235, PETRI_TRANSITIONS=324} [2024-10-13 12:38:36,272 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 213 predicate places. [2024-10-13 12:38:36,272 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 324 transitions, 5667 flow [2024-10-13 12:38:36,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:36,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:36,273 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:36,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:36,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:36,478 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:36,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1274077767, now seen corresponding path program 20 times [2024-10-13 12:38:36,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:36,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812319567] [2024-10-13 12:38:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:36,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:36,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:36,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812319567] [2024-10-13 12:38:36,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812319567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:36,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668160844] [2024-10-13 12:38:36,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:36,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:36,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:36,528 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:36,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 12:38:36,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:36,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:36,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:36,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:36,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668160844] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:36,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945461774] [2024-10-13 12:38:36,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:36,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:36,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:36,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:36,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:36,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 324 transitions, 5667 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 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) [2024-10-13 12:38:36,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:36,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:36,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:36,935 INFO L124 PetriNetUnfolderBase]: 641/1059 cut-off events. [2024-10-13 12:38:36,936 INFO L125 PetriNetUnfolderBase]: For 32004/32004 co-relation queries the response was YES. [2024-10-13 12:38:36,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10123 conditions, 1059 events. 641/1059 cut-off events. For 32004/32004 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4863 event pairs, 152 based on Foata normal form. 4/1063 useless extension candidates. Maximal degree in co-relation 9955. Up to 924 conditions per place. [2024-10-13 12:38:36,946 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 284 selfloop transitions, 56 changer transitions 2/343 dead transitions. [2024-10-13 12:38:36,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 343 transitions, 6748 flow [2024-10-13 12:38:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:38:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:38:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-10-13 12:38:36,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-10-13 12:38:36,947 INFO L175 Difference]: Start difference. First operand has 235 places, 324 transitions, 5667 flow. Second operand 11 states and 94 transitions. [2024-10-13 12:38:36,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 343 transitions, 6748 flow [2024-10-13 12:38:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 343 transitions, 5977 flow, removed 365 selfloop flow, removed 8 redundant places. [2024-10-13 12:38:37,077 INFO L231 Difference]: Finished difference. Result has 238 places, 327 transitions, 5184 flow [2024-10-13 12:38:37,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5184, PETRI_PLACES=238, PETRI_TRANSITIONS=327} [2024-10-13 12:38:37,078 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 216 predicate places. [2024-10-13 12:38:37,078 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 327 transitions, 5184 flow [2024-10-13 12:38:37,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 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) [2024-10-13 12:38:37,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:37,078 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:37,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-13 12:38:37,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-13 12:38:37,279 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:37,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash -840836223, now seen corresponding path program 21 times [2024-10-13 12:38:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:37,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025625528] [2024-10-13 12:38:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:37,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:37,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025625528] [2024-10-13 12:38:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025625528] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275598076] [2024-10-13 12:38:37,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:37,338 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:37,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-13 12:38:37,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:37,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:37,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:37,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:37,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:37,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275598076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:37,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:37,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566715218] [2024-10-13 12:38:37,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:37,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:37,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:37,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 327 transitions, 5184 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:37,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:37,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:37,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:38,079 INFO L124 PetriNetUnfolderBase]: 686/1126 cut-off events. [2024-10-13 12:38:38,080 INFO L125 PetriNetUnfolderBase]: For 43359/43359 co-relation queries the response was YES. [2024-10-13 12:38:38,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 1126 events. 686/1126 cut-off events. For 43359/43359 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5209 event pairs, 149 based on Foata normal form. 10/1136 useless extension candidates. Maximal degree in co-relation 10244. Up to 929 conditions per place. [2024-10-13 12:38:38,102 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 289 selfloop transitions, 85 changer transitions 0/375 dead transitions. [2024-10-13 12:38:38,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 375 transitions, 6885 flow [2024-10-13 12:38:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:38:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:38:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-10-13 12:38:38,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-10-13 12:38:38,109 INFO L175 Difference]: Start difference. First operand has 238 places, 327 transitions, 5184 flow. Second operand 16 states and 138 transitions. [2024-10-13 12:38:38,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 375 transitions, 6885 flow [2024-10-13 12:38:38,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 375 transitions, 6774 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:38,313 INFO L231 Difference]: Finished difference. Result has 251 places, 352 transitions, 6047 flow [2024-10-13 12:38:38,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6047, PETRI_PLACES=251, PETRI_TRANSITIONS=352} [2024-10-13 12:38:38,314 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 229 predicate places. [2024-10-13 12:38:38,314 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 352 transitions, 6047 flow [2024-10-13 12:38:38,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:38,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:38,315 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:38,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-13 12:38:38,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-13 12:38:38,519 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:38,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash -18594597, now seen corresponding path program 22 times [2024-10-13 12:38:38,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:38,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843916775] [2024-10-13 12:38:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:38,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843916775] [2024-10-13 12:38:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843916775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405012437] [2024-10-13 12:38:38,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:38,625 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:38,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-13 12:38:38,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:38,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:38,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:38,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:38,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405012437] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:38,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:38,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:38,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786522324] [2024-10-13 12:38:38,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:38,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:38,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:38,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:38,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:38,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:38,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 352 transitions, 6047 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:38,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:38,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:38,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:39,294 INFO L124 PetriNetUnfolderBase]: 721/1177 cut-off events. [2024-10-13 12:38:39,295 INFO L125 PetriNetUnfolderBase]: For 54359/54359 co-relation queries the response was YES. [2024-10-13 12:38:39,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11614 conditions, 1177 events. 721/1177 cut-off events. For 54359/54359 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5441 event pairs, 86 based on Foata normal form. 10/1187 useless extension candidates. Maximal degree in co-relation 11442. Up to 705 conditions per place. [2024-10-13 12:38:39,319 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 228 selfloop transitions, 168 changer transitions 0/397 dead transitions. [2024-10-13 12:38:39,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 397 transitions, 7846 flow [2024-10-13 12:38:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-10-13 12:38:39,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-10-13 12:38:39,325 INFO L175 Difference]: Start difference. First operand has 251 places, 352 transitions, 6047 flow. Second operand 17 states and 149 transitions. [2024-10-13 12:38:39,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 397 transitions, 7846 flow [2024-10-13 12:38:39,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 397 transitions, 7281 flow, removed 257 selfloop flow, removed 10 redundant places. [2024-10-13 12:38:39,747 INFO L231 Difference]: Finished difference. Result has 260 places, 370 transitions, 6651 flow [2024-10-13 12:38:39,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6651, PETRI_PLACES=260, PETRI_TRANSITIONS=370} [2024-10-13 12:38:39,749 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 238 predicate places. [2024-10-13 12:38:39,749 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 370 transitions, 6651 flow [2024-10-13 12:38:39,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:39,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:39,749 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:39,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:39,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-13 12:38:39,950 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:39,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1624324261, now seen corresponding path program 23 times [2024-10-13 12:38:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:39,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633185090] [2024-10-13 12:38:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:40,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:40,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633185090] [2024-10-13 12:38:40,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633185090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:40,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717922562] [2024-10-13 12:38:40,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:40,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:40,045 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:40,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-13 12:38:40,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:40,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:40,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:40,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:40,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:40,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717922562] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:40,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:40,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 12:38:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655725269] [2024-10-13 12:38:40,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:40,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:40,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:40,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:40,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 370 transitions, 6651 flow. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:40,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:40,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:40,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:40,703 INFO L124 PetriNetUnfolderBase]: 752/1226 cut-off events. [2024-10-13 12:38:40,703 INFO L125 PetriNetUnfolderBase]: For 46695/46695 co-relation queries the response was YES. [2024-10-13 12:38:40,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12230 conditions, 1226 events. 752/1226 cut-off events. For 46695/46695 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5722 event pairs, 164 based on Foata normal form. 6/1232 useless extension candidates. Maximal degree in co-relation 12059. Up to 1041 conditions per place. [2024-10-13 12:38:40,726 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 320 selfloop transitions, 79 changer transitions 6/406 dead transitions. [2024-10-13 12:38:40,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 406 transitions, 8104 flow [2024-10-13 12:38:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:38:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:38:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 122 transitions. [2024-10-13 12:38:40,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-10-13 12:38:40,728 INFO L175 Difference]: Start difference. First operand has 260 places, 370 transitions, 6651 flow. Second operand 15 states and 122 transitions. [2024-10-13 12:38:40,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 406 transitions, 8104 flow [2024-10-13 12:38:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 406 transitions, 7507 flow, removed 252 selfloop flow, removed 13 redundant places. [2024-10-13 12:38:41,034 INFO L231 Difference]: Finished difference. Result has 267 places, 384 transitions, 6627 flow [2024-10-13 12:38:41,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6627, PETRI_PLACES=267, PETRI_TRANSITIONS=384} [2024-10-13 12:38:41,035 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 245 predicate places. [2024-10-13 12:38:41,035 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 384 transitions, 6627 flow [2024-10-13 12:38:41,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:41,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:41,036 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:41,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:41,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:41,237 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:41,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1469932770, now seen corresponding path program 24 times [2024-10-13 12:38:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526515764] [2024-10-13 12:38:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526515764] [2024-10-13 12:38:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526515764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:41,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084454263] [2024-10-13 12:38:41,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:41,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:41,370 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:41,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-13 12:38:41,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 12:38:41,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:41,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:41,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:41,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084454263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:41,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711540672] [2024-10-13 12:38:41,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:41,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:41,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:41,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:41,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:41,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 384 transitions, 6627 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:41,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:41,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:42,014 INFO L124 PetriNetUnfolderBase]: 794/1283 cut-off events. [2024-10-13 12:38:42,014 INFO L125 PetriNetUnfolderBase]: For 52363/52363 co-relation queries the response was YES. [2024-10-13 12:38:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12855 conditions, 1283 events. 794/1283 cut-off events. For 52363/52363 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5966 event pairs, 38 based on Foata normal form. 9/1292 useless extension candidates. Maximal degree in co-relation 12740. Up to 890 conditions per place. [2024-10-13 12:38:42,037 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 330 selfloop transitions, 102 changer transitions 1/434 dead transitions. [2024-10-13 12:38:42,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 434 transitions, 8667 flow [2024-10-13 12:38:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:38:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:38:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 124 transitions. [2024-10-13 12:38:42,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-10-13 12:38:42,038 INFO L175 Difference]: Start difference. First operand has 267 places, 384 transitions, 6627 flow. Second operand 14 states and 124 transitions. [2024-10-13 12:38:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 434 transitions, 8667 flow [2024-10-13 12:38:42,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 434 transitions, 8482 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-10-13 12:38:42,303 INFO L231 Difference]: Finished difference. Result has 276 places, 406 transitions, 7504 flow [2024-10-13 12:38:42,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6466, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7504, PETRI_PLACES=276, PETRI_TRANSITIONS=406} [2024-10-13 12:38:42,304 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 254 predicate places. [2024-10-13 12:38:42,304 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 406 transitions, 7504 flow [2024-10-13 12:38:42,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:42,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:42,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:42,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:42,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-13 12:38:42,506 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:42,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1320777182, now seen corresponding path program 25 times [2024-10-13 12:38:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429804179] [2024-10-13 12:38:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429804179] [2024-10-13 12:38:42,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429804179] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:42,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862851455] [2024-10-13 12:38:42,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:42,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:42,605 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:42,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-13 12:38:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:42,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:42,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:42,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862851455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:42,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:42,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 12:38:42,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265495794] [2024-10-13 12:38:42,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:42,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:42,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:42,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 406 transitions, 7504 flow. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:42,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:42,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:42,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:43,406 INFO L124 PetriNetUnfolderBase]: 865/1390 cut-off events. [2024-10-13 12:38:43,407 INFO L125 PetriNetUnfolderBase]: For 69312/69312 co-relation queries the response was YES. [2024-10-13 12:38:43,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14793 conditions, 1390 events. 865/1390 cut-off events. For 69312/69312 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6569 event pairs, 38 based on Foata normal form. 15/1405 useless extension candidates. Maximal degree in co-relation 14615. Up to 828 conditions per place. [2024-10-13 12:38:43,432 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 321 selfloop transitions, 156 changer transitions 5/483 dead transitions. [2024-10-13 12:38:43,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 483 transitions, 10287 flow [2024-10-13 12:38:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-10-13 12:38:43,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-10-13 12:38:43,434 INFO L175 Difference]: Start difference. First operand has 276 places, 406 transitions, 7504 flow. Second operand 17 states and 147 transitions. [2024-10-13 12:38:43,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 483 transitions, 10287 flow [2024-10-13 12:38:43,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 483 transitions, 9465 flow, removed 313 selfloop flow, removed 7 redundant places. [2024-10-13 12:38:43,783 INFO L231 Difference]: Finished difference. Result has 289 places, 444 transitions, 8500 flow [2024-10-13 12:38:43,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8500, PETRI_PLACES=289, PETRI_TRANSITIONS=444} [2024-10-13 12:38:43,785 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2024-10-13 12:38:43,785 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 444 transitions, 8500 flow [2024-10-13 12:38:43,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:43,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:43,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:43,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:43,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-13 12:38:43,986 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:43,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 819255929, now seen corresponding path program 26 times [2024-10-13 12:38:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:43,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359410215] [2024-10-13 12:38:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359410215] [2024-10-13 12:38:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359410215] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642051744] [2024-10-13 12:38:44,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:44,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:44,060 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:44,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-13 12:38:44,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:44,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:44,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:44,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:44,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642051744] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:44,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 12:38:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939237209] [2024-10-13 12:38:44,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:44,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:44,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:44,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 444 transitions, 8500 flow. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:44,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:44,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:44,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:44,708 INFO L124 PetriNetUnfolderBase]: 863/1391 cut-off events. [2024-10-13 12:38:44,708 INFO L125 PetriNetUnfolderBase]: For 64705/64705 co-relation queries the response was YES. [2024-10-13 12:38:44,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14562 conditions, 1391 events. 863/1391 cut-off events. For 64705/64705 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6583 event pairs, 129 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 14380. Up to 982 conditions per place. [2024-10-13 12:38:44,733 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 355 selfloop transitions, 100 changer transitions 5/461 dead transitions. [2024-10-13 12:38:44,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 461 transitions, 9734 flow [2024-10-13 12:38:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:38:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:38:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-10-13 12:38:44,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-13 12:38:44,735 INFO L175 Difference]: Start difference. First operand has 289 places, 444 transitions, 8500 flow. Second operand 7 states and 66 transitions. [2024-10-13 12:38:44,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 461 transitions, 9734 flow [2024-10-13 12:38:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 461 transitions, 8934 flow, removed 377 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:45,087 INFO L231 Difference]: Finished difference. Result has 289 places, 443 transitions, 7893 flow [2024-10-13 12:38:45,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7700, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7893, PETRI_PLACES=289, PETRI_TRANSITIONS=443} [2024-10-13 12:38:45,088 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2024-10-13 12:38:45,088 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 443 transitions, 7893 flow [2024-10-13 12:38:45,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:45,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:45,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:45,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:45,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-13 12:38:45,290 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:45,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:45,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1904791710, now seen corresponding path program 27 times [2024-10-13 12:38:45,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:45,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433878199] [2024-10-13 12:38:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:45,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:45,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433878199] [2024-10-13 12:38:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433878199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670605754] [2024-10-13 12:38:45,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:45,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:45,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:45,367 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:45,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-13 12:38:45,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:38:45,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:45,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:45,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:45,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:45,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670605754] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:45,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:45,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:45,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706540007] [2024-10-13 12:38:45,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:45,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:45,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:45,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 443 transitions, 7893 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:45,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:45,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:45,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:46,173 INFO L124 PetriNetUnfolderBase]: 860/1388 cut-off events. [2024-10-13 12:38:46,173 INFO L125 PetriNetUnfolderBase]: For 54090/54090 co-relation queries the response was YES. [2024-10-13 12:38:46,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 1388 events. 860/1388 cut-off events. For 54090/54090 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6614 event pairs, 36 based on Foata normal form. 18/1406 useless extension candidates. Maximal degree in co-relation 13656. Up to 966 conditions per place. [2024-10-13 12:38:46,192 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 348 selfloop transitions, 123 changer transitions 0/472 dead transitions. [2024-10-13 12:38:46,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 472 transitions, 9238 flow [2024-10-13 12:38:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 146 transitions. [2024-10-13 12:38:46,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-10-13 12:38:46,193 INFO L175 Difference]: Start difference. First operand has 289 places, 443 transitions, 7893 flow. Second operand 17 states and 146 transitions. [2024-10-13 12:38:46,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 472 transitions, 9238 flow [2024-10-13 12:38:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 472 transitions, 8983 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-13 12:38:46,470 INFO L231 Difference]: Finished difference. Result has 298 places, 446 transitions, 7957 flow [2024-10-13 12:38:46,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7482, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7957, PETRI_PLACES=298, PETRI_TRANSITIONS=446} [2024-10-13 12:38:46,471 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 276 predicate places. [2024-10-13 12:38:46,471 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 446 transitions, 7957 flow [2024-10-13 12:38:46,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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) [2024-10-13 12:38:46,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:46,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:46,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:46,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:46,673 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:46,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1975965699, now seen corresponding path program 28 times [2024-10-13 12:38:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606059381] [2024-10-13 12:38:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:46,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606059381] [2024-10-13 12:38:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606059381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691347214] [2024-10-13 12:38:46,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:46,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:46,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:46,752 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:46,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-13 12:38:46,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:46,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:46,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:46,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:46,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:46,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691347214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:46,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:46,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 12:38:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255824364] [2024-10-13 12:38:46,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:46,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:46,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:46,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:46,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 446 transitions, 7957 flow. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:46,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:46,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:46,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:47,432 INFO L124 PetriNetUnfolderBase]: 856/1384 cut-off events. [2024-10-13 12:38:47,432 INFO L125 PetriNetUnfolderBase]: For 56181/56181 co-relation queries the response was YES. [2024-10-13 12:38:47,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13836 conditions, 1384 events. 856/1384 cut-off events. For 56181/56181 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6624 event pairs, 134 based on Foata normal form. 4/1388 useless extension candidates. Maximal degree in co-relation 13654. Up to 994 conditions per place. [2024-10-13 12:38:47,459 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 343 selfloop transitions, 115 changer transitions 3/462 dead transitions. [2024-10-13 12:38:47,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 462 transitions, 9226 flow [2024-10-13 12:38:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:38:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:38:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-10-13 12:38:47,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-10-13 12:38:47,460 INFO L175 Difference]: Start difference. First operand has 298 places, 446 transitions, 7957 flow. Second operand 11 states and 93 transitions. [2024-10-13 12:38:47,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 462 transitions, 9226 flow [2024-10-13 12:38:47,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 462 transitions, 8884 flow, removed 56 selfloop flow, removed 12 redundant places. [2024-10-13 12:38:47,785 INFO L231 Difference]: Finished difference. Result has 297 places, 444 transitions, 7851 flow [2024-10-13 12:38:47,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7605, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7851, PETRI_PLACES=297, PETRI_TRANSITIONS=444} [2024-10-13 12:38:47,786 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 275 predicate places. [2024-10-13 12:38:47,787 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 444 transitions, 7851 flow [2024-10-13 12:38:47,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:47,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:47,787 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:47,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-10-13 12:38:47,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-10-13 12:38:47,988 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:47,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -261851048, now seen corresponding path program 29 times [2024-10-13 12:38:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:47,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856302496] [2024-10-13 12:38:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856302496] [2024-10-13 12:38:48,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856302496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994426717] [2024-10-13 12:38:48,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:48,072 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:48,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-13 12:38:48,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:38:48,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:48,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:48,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:48,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994426717] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:48,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 12:38:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035679330] [2024-10-13 12:38:48,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:48,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:48,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:48,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 444 transitions, 7851 flow. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:48,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:48,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:48,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:48,797 INFO L124 PetriNetUnfolderBase]: 908/1456 cut-off events. [2024-10-13 12:38:48,797 INFO L125 PetriNetUnfolderBase]: For 66298/66298 co-relation queries the response was YES. [2024-10-13 12:38:48,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15062 conditions, 1456 events. 908/1456 cut-off events. For 66298/66298 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6917 event pairs, 37 based on Foata normal form. 12/1468 useless extension candidates. Maximal degree in co-relation 14884. Up to 907 conditions per place. [2024-10-13 12:38:48,833 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 311 selfloop transitions, 190 changer transitions 0/502 dead transitions. [2024-10-13 12:38:48,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 502 transitions, 10254 flow [2024-10-13 12:38:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-10-13 12:38:48,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-10-13 12:38:48,835 INFO L175 Difference]: Start difference. First operand has 297 places, 444 transitions, 7851 flow. Second operand 17 states and 147 transitions. [2024-10-13 12:38:48,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 502 transitions, 10254 flow [2024-10-13 12:38:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 502 transitions, 9992 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-10-13 12:38:49,153 INFO L231 Difference]: Finished difference. Result has 307 places, 479 transitions, 9354 flow [2024-10-13 12:38:49,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7565, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9354, PETRI_PLACES=307, PETRI_TRANSITIONS=479} [2024-10-13 12:38:49,155 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 285 predicate places. [2024-10-13 12:38:49,155 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 479 transitions, 9354 flow [2024-10-13 12:38:49,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:49,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:49,156 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:49,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-10-13 12:38:49,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:49,357 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:49,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash -438573290, now seen corresponding path program 30 times [2024-10-13 12:38:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669732689] [2024-10-13 12:38:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:49,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:49,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669732689] [2024-10-13 12:38:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669732689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:49,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784355629] [2024-10-13 12:38:49,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:49,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:49,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:49,434 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:49,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-13 12:38:49,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:49,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:49,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:49,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:49,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:49,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784355629] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:49,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:49,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 12:38:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245009644] [2024-10-13 12:38:49,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:49,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:49,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:49,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:49,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 479 transitions, 9354 flow. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:49,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:49,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:49,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:50,188 INFO L124 PetriNetUnfolderBase]: 934/1501 cut-off events. [2024-10-13 12:38:50,188 INFO L125 PetriNetUnfolderBase]: For 68541/68541 co-relation queries the response was YES. [2024-10-13 12:38:50,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16000 conditions, 1501 events. 934/1501 cut-off events. For 68541/68541 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7190 event pairs, 15 based on Foata normal form. 8/1509 useless extension candidates. Maximal degree in co-relation 15825. Up to 769 conditions per place. [2024-10-13 12:38:50,219 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 328 selfloop transitions, 188 changer transitions 0/517 dead transitions. [2024-10-13 12:38:50,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 517 transitions, 11082 flow [2024-10-13 12:38:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-10-13 12:38:50,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-10-13 12:38:50,222 INFO L175 Difference]: Start difference. First operand has 307 places, 479 transitions, 9354 flow. Second operand 10 states and 93 transitions. [2024-10-13 12:38:50,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 517 transitions, 11082 flow [2024-10-13 12:38:50,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 517 transitions, 10120 flow, removed 439 selfloop flow, removed 10 redundant places. [2024-10-13 12:38:50,669 INFO L231 Difference]: Finished difference. Result has 310 places, 492 transitions, 9172 flow [2024-10-13 12:38:50,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8448, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9172, PETRI_PLACES=310, PETRI_TRANSITIONS=492} [2024-10-13 12:38:50,670 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 288 predicate places. [2024-10-13 12:38:50,670 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 492 transitions, 9172 flow [2024-10-13 12:38:50,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:50,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:50,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:50,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:50,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-10-13 12:38:50,872 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:50,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1369561908, now seen corresponding path program 31 times [2024-10-13 12:38:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:50,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558791565] [2024-10-13 12:38:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:50,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:50,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558791565] [2024-10-13 12:38:50,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558791565] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220209509] [2024-10-13 12:38:50,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:50,975 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:50,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-13 12:38:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:51,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:51,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:51,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220209509] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:51,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224817788] [2024-10-13 12:38:51,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:51,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:51,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:51,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 492 transitions, 9172 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:51,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:51,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:51,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:51,873 INFO L124 PetriNetUnfolderBase]: 951/1530 cut-off events. [2024-10-13 12:38:51,874 INFO L125 PetriNetUnfolderBase]: For 48484/48484 co-relation queries the response was YES. [2024-10-13 12:38:51,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15311 conditions, 1530 events. 951/1530 cut-off events. For 48484/48484 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7415 event pairs, 37 based on Foata normal form. 12/1542 useless extension candidates. Maximal degree in co-relation 15072. Up to 975 conditions per place. [2024-10-13 12:38:51,900 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 356 selfloop transitions, 169 changer transitions 0/526 dead transitions. [2024-10-13 12:38:51,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 526 transitions, 10679 flow [2024-10-13 12:38:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:38:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:38:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-10-13 12:38:51,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-10-13 12:38:51,905 INFO L175 Difference]: Start difference. First operand has 310 places, 492 transitions, 9172 flow. Second operand 16 states and 138 transitions. [2024-10-13 12:38:51,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 526 transitions, 10679 flow [2024-10-13 12:38:52,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 526 transitions, 10305 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-10-13 12:38:52,260 INFO L231 Difference]: Finished difference. Result has 319 places, 502 transitions, 9456 flow [2024-10-13 12:38:52,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8705, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9456, PETRI_PLACES=319, PETRI_TRANSITIONS=502} [2024-10-13 12:38:52,262 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 297 predicate places. [2024-10-13 12:38:52,263 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 502 transitions, 9456 flow [2024-10-13 12:38:52,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:52,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:52,263 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:52,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:52,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:52,464 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:52,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 511719420, now seen corresponding path program 32 times [2024-10-13 12:38:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997299684] [2024-10-13 12:38:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:52,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:52,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997299684] [2024-10-13 12:38:52,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997299684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:52,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962222049] [2024-10-13 12:38:52,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:52,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:52,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:52,538 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:52,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-13 12:38:52,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:52,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:52,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:52,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:52,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:52,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962222049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:52,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:52,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 12:38:52,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478554127] [2024-10-13 12:38:52,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:52,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:52,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:52,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 502 transitions, 9456 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:52,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:52,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:52,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:53,461 INFO L124 PetriNetUnfolderBase]: 996/1609 cut-off events. [2024-10-13 12:38:53,461 INFO L125 PetriNetUnfolderBase]: For 50028/50028 co-relation queries the response was YES. [2024-10-13 12:38:53,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16241 conditions, 1609 events. 996/1609 cut-off events. For 50028/50028 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7927 event pairs, 50 based on Foata normal form. 6/1615 useless extension candidates. Maximal degree in co-relation 15991. Up to 1087 conditions per place. [2024-10-13 12:38:53,493 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 402 selfloop transitions, 145 changer transitions 0/548 dead transitions. [2024-10-13 12:38:53,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 548 transitions, 11340 flow [2024-10-13 12:38:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:38:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:38:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 116 transitions. [2024-10-13 12:38:53,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-10-13 12:38:53,494 INFO L175 Difference]: Start difference. First operand has 319 places, 502 transitions, 9456 flow. Second operand 14 states and 116 transitions. [2024-10-13 12:38:53,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 548 transitions, 11340 flow [2024-10-13 12:38:53,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 548 transitions, 11098 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-10-13 12:38:53,887 INFO L231 Difference]: Finished difference. Result has 330 places, 528 transitions, 10153 flow [2024-10-13 12:38:53,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9238, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10153, PETRI_PLACES=330, PETRI_TRANSITIONS=528} [2024-10-13 12:38:53,888 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 308 predicate places. [2024-10-13 12:38:53,888 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 528 transitions, 10153 flow [2024-10-13 12:38:53,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:53,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:53,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:53,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-10-13 12:38:54,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-13 12:38:54,093 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:54,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2145914194, now seen corresponding path program 33 times [2024-10-13 12:38:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711669410] [2024-10-13 12:38:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:54,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:54,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711669410] [2024-10-13 12:38:54,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711669410] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:54,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596282828] [2024-10-13 12:38:54,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:54,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:54,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:54,170 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:54,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-13 12:38:54,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:54,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:54,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:54,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:54,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596282828] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:54,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034648900] [2024-10-13 12:38:54,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:54,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:54,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:54,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:54,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 528 transitions, 10153 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:54,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:54,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:54,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:54,972 INFO L124 PetriNetUnfolderBase]: 993/1606 cut-off events. [2024-10-13 12:38:54,973 INFO L125 PetriNetUnfolderBase]: For 51898/51898 co-relation queries the response was YES. [2024-10-13 12:38:54,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16389 conditions, 1606 events. 993/1606 cut-off events. For 51898/51898 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8021 event pairs, 64 based on Foata normal form. 6/1612 useless extension candidates. Maximal degree in co-relation 16132. Up to 960 conditions per place. [2024-10-13 12:38:55,001 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 383 selfloop transitions, 163 changer transitions 3/550 dead transitions. [2024-10-13 12:38:55,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 550 transitions, 11525 flow [2024-10-13 12:38:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:38:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:38:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-13 12:38:55,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-10-13 12:38:55,003 INFO L175 Difference]: Start difference. First operand has 330 places, 528 transitions, 10153 flow. Second operand 13 states and 113 transitions. [2024-10-13 12:38:55,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 550 transitions, 11525 flow [2024-10-13 12:38:55,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 550 transitions, 11313 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:55,397 INFO L231 Difference]: Finished difference. Result has 337 places, 526 transitions, 10245 flow [2024-10-13 12:38:55,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10245, PETRI_PLACES=337, PETRI_TRANSITIONS=526} [2024-10-13 12:38:55,398 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 315 predicate places. [2024-10-13 12:38:55,398 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 526 transitions, 10245 flow [2024-10-13 12:38:55,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:55,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:55,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:55,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-13 12:38:55,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-10-13 12:38:55,602 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:55,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash -936318785, now seen corresponding path program 34 times [2024-10-13 12:38:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:55,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000237982] [2024-10-13 12:38:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:55,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:55,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000237982] [2024-10-13 12:38:55,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000237982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566961662] [2024-10-13 12:38:55,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:55,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:55,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:55,665 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:55,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-13 12:38:55,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:55,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:55,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:55,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:55,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:55,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566961662] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:55,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:55,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:55,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662463519] [2024-10-13 12:38:55,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:55,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:55,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:55,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 526 transitions, 10245 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:55,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:55,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:55,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:56,423 INFO L124 PetriNetUnfolderBase]: 992/1598 cut-off events. [2024-10-13 12:38:56,423 INFO L125 PetriNetUnfolderBase]: For 54242/54242 co-relation queries the response was YES. [2024-10-13 12:38:56,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 1598 events. 992/1598 cut-off events. For 54242/54242 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7835 event pairs, 152 based on Foata normal form. 4/1602 useless extension candidates. Maximal degree in co-relation 16254. Up to 1075 conditions per place. [2024-10-13 12:38:56,454 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 351 selfloop transitions, 190 changer transitions 2/544 dead transitions. [2024-10-13 12:38:56,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 544 transitions, 11624 flow [2024-10-13 12:38:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:38:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:38:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-10-13 12:38:56,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-13 12:38:56,456 INFO L175 Difference]: Start difference. First operand has 337 places, 526 transitions, 10245 flow. Second operand 12 states and 104 transitions. [2024-10-13 12:38:56,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 544 transitions, 11624 flow [2024-10-13 12:38:56,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 544 transitions, 11266 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-10-13 12:38:56,825 INFO L231 Difference]: Finished difference. Result has 333 places, 525 transitions, 10321 flow [2024-10-13 12:38:56,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9867, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10321, PETRI_PLACES=333, PETRI_TRANSITIONS=525} [2024-10-13 12:38:56,826 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 311 predicate places. [2024-10-13 12:38:56,826 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 525 transitions, 10321 flow [2024-10-13 12:38:56,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:56,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:56,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:56,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:57,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-13 12:38:57,028 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:57,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1893493436, now seen corresponding path program 35 times [2024-10-13 12:38:57,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:57,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701709026] [2024-10-13 12:38:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:57,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701709026] [2024-10-13 12:38:57,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701709026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892883614] [2024-10-13 12:38:57,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:57,099 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:57,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-13 12:38:57,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:57,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:57,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:38:57,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:57,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892883614] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:57,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 12:38:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654524732] [2024-10-13 12:38:57,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:57,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:57,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:57,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 525 transitions, 10321 flow. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:57,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:57,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:57,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:58,072 INFO L124 PetriNetUnfolderBase]: 1034/1664 cut-off events. [2024-10-13 12:38:58,073 INFO L125 PetriNetUnfolderBase]: For 56504/56504 co-relation queries the response was YES. [2024-10-13 12:38:58,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17355 conditions, 1664 events. 1034/1664 cut-off events. For 56504/56504 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8298 event pairs, 45 based on Foata normal form. 6/1670 useless extension candidates. Maximal degree in co-relation 17042. Up to 1025 conditions per place. [2024-10-13 12:38:58,106 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 383 selfloop transitions, 197 changer transitions 0/581 dead transitions. [2024-10-13 12:38:58,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 581 transitions, 12346 flow [2024-10-13 12:38:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:38:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:38:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 183 transitions. [2024-10-13 12:38:58,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3978260869565217 [2024-10-13 12:38:58,107 INFO L175 Difference]: Start difference. First operand has 333 places, 525 transitions, 10321 flow. Second operand 23 states and 183 transitions. [2024-10-13 12:38:58,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 581 transitions, 12346 flow [2024-10-13 12:38:58,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 581 transitions, 11982 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-10-13 12:38:58,532 INFO L231 Difference]: Finished difference. Result has 345 places, 553 transitions, 11054 flow [2024-10-13 12:38:58,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9923, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=11054, PETRI_PLACES=345, PETRI_TRANSITIONS=553} [2024-10-13 12:38:58,534 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 323 predicate places. [2024-10-13 12:38:58,534 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 553 transitions, 11054 flow [2024-10-13 12:38:58,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:58,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:58,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:58,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-10-13 12:38:58,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-13 12:38:58,739 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:58,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -618666849, now seen corresponding path program 36 times [2024-10-13 12:38:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:58,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997502660] [2024-10-13 12:38:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:58,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997502660] [2024-10-13 12:38:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997502660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399077883] [2024-10-13 12:38:58,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:58,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:58,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:58,959 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:58,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-13 12:38:59,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 12:38:59,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:59,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:38:59,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:59,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399077883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:59,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:59,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 12:38:59,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064681875] [2024-10-13 12:38:59,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:59,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:59,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:59,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:59,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:59,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 553 transitions, 11054 flow. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:59,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:59,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:59,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:00,371 INFO L124 PetriNetUnfolderBase]: 1197/1972 cut-off events. [2024-10-13 12:39:00,372 INFO L125 PetriNetUnfolderBase]: For 69594/69594 co-relation queries the response was YES. [2024-10-13 12:39:00,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20736 conditions, 1972 events. 1197/1972 cut-off events. For 69594/69594 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10442 event pairs, 24 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 20367. Up to 1548 conditions per place. [2024-10-13 12:39:00,411 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 553 selfloop transitions, 107 changer transitions 12/673 dead transitions. [2024-10-13 12:39:00,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 673 transitions, 14503 flow [2024-10-13 12:39:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:39:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:39:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-10-13 12:39:00,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-10-13 12:39:00,413 INFO L175 Difference]: Start difference. First operand has 345 places, 553 transitions, 11054 flow. Second operand 11 states and 117 transitions. [2024-10-13 12:39:00,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 673 transitions, 14503 flow [2024-10-13 12:39:00,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 673 transitions, 13993 flow, removed 69 selfloop flow, removed 12 redundant places. [2024-10-13 12:39:00,917 INFO L231 Difference]: Finished difference. Result has 352 places, 611 transitions, 12240 flow [2024-10-13 12:39:00,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10586, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12240, PETRI_PLACES=352, PETRI_TRANSITIONS=611} [2024-10-13 12:39:00,918 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 330 predicate places. [2024-10-13 12:39:00,919 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 611 transitions, 12240 flow [2024-10-13 12:39:00,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:00,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:00,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:00,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:01,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-13 12:39:01,124 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:01,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 416677767, now seen corresponding path program 37 times [2024-10-13 12:39:01,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:01,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896304638] [2024-10-13 12:39:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:01,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:01,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:01,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896304638] [2024-10-13 12:39:01,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896304638] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:01,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197108216] [2024-10-13 12:39:01,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:39:01,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:01,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:01,345 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:01,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-13 12:39:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:01,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:01,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:01,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:01,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197108216] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:01,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:01,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-13 12:39:01,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853417693] [2024-10-13 12:39:01,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:01,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:39:01,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:39:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:39:01,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:01,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 611 transitions, 12240 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 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) [2024-10-13 12:39:01,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:01,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:01,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:02,698 INFO L124 PetriNetUnfolderBase]: 1205/1994 cut-off events. [2024-10-13 12:39:02,698 INFO L125 PetriNetUnfolderBase]: For 74915/74915 co-relation queries the response was YES. [2024-10-13 12:39:02,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21120 conditions, 1994 events. 1205/1994 cut-off events. For 74915/74915 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10677 event pairs, 23 based on Foata normal form. 2/1996 useless extension candidates. Maximal degree in co-relation 20963. Up to 1678 conditions per place. [2024-10-13 12:39:02,739 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 551 selfloop transitions, 91 changer transitions 17/660 dead transitions. [2024-10-13 12:39:02,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 660 transitions, 14214 flow [2024-10-13 12:39:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:39:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:39:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-10-13 12:39:02,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-13 12:39:02,741 INFO L175 Difference]: Start difference. First operand has 352 places, 611 transitions, 12240 flow. Second operand 12 states and 115 transitions. [2024-10-13 12:39:02,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 660 transitions, 14214 flow [2024-10-13 12:39:03,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 660 transitions, 13759 flow, removed 226 selfloop flow, removed 3 redundant places. [2024-10-13 12:39:03,319 INFO L231 Difference]: Finished difference. Result has 363 places, 617 transitions, 12279 flow [2024-10-13 12:39:03,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11869, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12279, PETRI_PLACES=363, PETRI_TRANSITIONS=617} [2024-10-13 12:39:03,321 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 341 predicate places. [2024-10-13 12:39:03,321 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 617 transitions, 12279 flow [2024-10-13 12:39:03,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 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) [2024-10-13 12:39:03,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:03,321 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:03,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:03,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:03,525 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:03,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash 34939403, now seen corresponding path program 38 times [2024-10-13 12:39:03,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:03,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495832972] [2024-10-13 12:39:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495832972] [2024-10-13 12:39:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495832972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944297497] [2024-10-13 12:39:03,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:39:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:03,715 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:03,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-13 12:39:03,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:03,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:03,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:03,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:03,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:04,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944297497] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:04,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:04,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-13 12:39:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60877798] [2024-10-13 12:39:04,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:04,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:39:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:39:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:39:04,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:04,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 617 transitions, 12279 flow. Second operand has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 17 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) [2024-10-13 12:39:04,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:04,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:05,184 INFO L124 PetriNetUnfolderBase]: 1187/1963 cut-off events. [2024-10-13 12:39:05,184 INFO L125 PetriNetUnfolderBase]: For 65228/65228 co-relation queries the response was YES. [2024-10-13 12:39:05,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20388 conditions, 1963 events. 1187/1963 cut-off events. For 65228/65228 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10447 event pairs, 22 based on Foata normal form. 1/1964 useless extension candidates. Maximal degree in co-relation 20228. Up to 1554 conditions per place. [2024-10-13 12:39:05,227 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 544 selfloop transitions, 109 changer transitions 4/658 dead transitions. [2024-10-13 12:39:05,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 658 transitions, 14104 flow [2024-10-13 12:39:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:39:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:39:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-10-13 12:39:05,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-13 12:39:05,229 INFO L175 Difference]: Start difference. First operand has 363 places, 617 transitions, 12279 flow. Second operand 9 states and 98 transitions. [2024-10-13 12:39:05,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 658 transitions, 14104 flow [2024-10-13 12:39:05,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 658 transitions, 13744 flow, removed 103 selfloop flow, removed 8 redundant places. [2024-10-13 12:39:05,815 INFO L231 Difference]: Finished difference. Result has 363 places, 621 transitions, 12321 flow [2024-10-13 12:39:05,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11928, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12321, PETRI_PLACES=363, PETRI_TRANSITIONS=621} [2024-10-13 12:39:05,816 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 341 predicate places. [2024-10-13 12:39:05,816 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 621 transitions, 12321 flow [2024-10-13 12:39:05,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 17 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) [2024-10-13 12:39:05,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:05,816 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:05,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-10-13 12:39:06,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-10-13 12:39:06,021 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:06,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1032936729, now seen corresponding path program 39 times [2024-10-13 12:39:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:06,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865295640] [2024-10-13 12:39:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:06,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:06,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865295640] [2024-10-13 12:39:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865295640] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588486761] [2024-10-13 12:39:06,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:06,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:06,234 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:06,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-13 12:39:06,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:39:06,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:06,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:06,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:06,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:06,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588486761] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:06,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:06,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 12:39:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594465807] [2024-10-13 12:39:06,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:06,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:39:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:39:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:39:06,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:06,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 621 transitions, 12321 flow. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:06,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:06,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:06,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:07,552 INFO L124 PetriNetUnfolderBase]: 1185/1955 cut-off events. [2024-10-13 12:39:07,553 INFO L125 PetriNetUnfolderBase]: For 66272/66272 co-relation queries the response was YES. [2024-10-13 12:39:07,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20073 conditions, 1955 events. 1185/1955 cut-off events. For 66272/66272 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10375 event pairs, 21 based on Foata normal form. 1/1956 useless extension candidates. Maximal degree in co-relation 19922. Up to 1609 conditions per place. [2024-10-13 12:39:07,589 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 547 selfloop transitions, 109 changer transitions 4/661 dead transitions. [2024-10-13 12:39:07,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 661 transitions, 14091 flow [2024-10-13 12:39:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:39:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:39:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-10-13 12:39:07,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-10-13 12:39:07,590 INFO L175 Difference]: Start difference. First operand has 363 places, 621 transitions, 12321 flow. Second operand 11 states and 108 transitions. [2024-10-13 12:39:07,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 661 transitions, 14091 flow [2024-10-13 12:39:08,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 661 transitions, 13808 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-10-13 12:39:08,163 INFO L231 Difference]: Finished difference. Result has 369 places, 628 transitions, 12479 flow [2024-10-13 12:39:08,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12042, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12479, PETRI_PLACES=369, PETRI_TRANSITIONS=628} [2024-10-13 12:39:08,165 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 347 predicate places. [2024-10-13 12:39:08,165 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 628 transitions, 12479 flow [2024-10-13 12:39:08,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:08,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:08,166 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:08,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:08,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:08,367 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:08,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash 571292345, now seen corresponding path program 40 times [2024-10-13 12:39:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165649241] [2024-10-13 12:39:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:08,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:08,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165649241] [2024-10-13 12:39:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165649241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64080380] [2024-10-13 12:39:08,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:39:08,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:08,612 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:08,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-13 12:39:08,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:39:08,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:08,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:08,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:08,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64080380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:08,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-13 12:39:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759165615] [2024-10-13 12:39:08,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:08,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:39:08,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:39:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:39:08,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:08,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 628 transitions, 12479 flow. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:08,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:08,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:08,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:09,905 INFO L124 PetriNetUnfolderBase]: 1249/2076 cut-off events. [2024-10-13 12:39:09,905 INFO L125 PetriNetUnfolderBase]: For 74288/74288 co-relation queries the response was YES. [2024-10-13 12:39:09,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 2076 events. 1249/2076 cut-off events. For 74288/74288 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11271 event pairs, 32 based on Foata normal form. 1/2077 useless extension candidates. Maximal degree in co-relation 21260. Up to 1827 conditions per place. [2024-10-13 12:39:09,941 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 598 selfloop transitions, 85 changer transitions 8/692 dead transitions. [2024-10-13 12:39:09,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 692 transitions, 14934 flow [2024-10-13 12:39:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:39:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:39:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-10-13 12:39:09,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-13 12:39:09,942 INFO L175 Difference]: Start difference. First operand has 369 places, 628 transitions, 12479 flow. Second operand 8 states and 88 transitions. [2024-10-13 12:39:09,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 692 transitions, 14934 flow [2024-10-13 12:39:10,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 692 transitions, 14723 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-10-13 12:39:10,600 INFO L231 Difference]: Finished difference. Result has 371 places, 655 transitions, 13118 flow [2024-10-13 12:39:10,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12274, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13118, PETRI_PLACES=371, PETRI_TRANSITIONS=655} [2024-10-13 12:39:10,605 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 349 predicate places. [2024-10-13 12:39:10,606 INFO L471 AbstractCegarLoop]: Abstraction has has 371 places, 655 transitions, 13118 flow [2024-10-13 12:39:10,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:10,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:10,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:10,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:10,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-10-13 12:39:10,807 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:10,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash 493537835, now seen corresponding path program 41 times [2024-10-13 12:39:10,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:10,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054744717] [2024-10-13 12:39:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:11,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054744717] [2024-10-13 12:39:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054744717] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626803141] [2024-10-13 12:39:11,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:39:11,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:11,101 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:11,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-13 12:39:11,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:39:11,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:11,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:11,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:11,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:11,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626803141] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:11,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:11,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-13 12:39:11,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493080099] [2024-10-13 12:39:11,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:11,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:39:11,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:39:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:39:11,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:11,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 655 transitions, 13118 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-13 12:39:11,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:11,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:11,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:12,389 INFO L124 PetriNetUnfolderBase]: 1242/2059 cut-off events. [2024-10-13 12:39:12,389 INFO L125 PetriNetUnfolderBase]: For 75007/75007 co-relation queries the response was YES. [2024-10-13 12:39:12,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21400 conditions, 2059 events. 1242/2059 cut-off events. For 75007/75007 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11129 event pairs, 33 based on Foata normal form. 1/2060 useless extension candidates. Maximal degree in co-relation 21237. Up to 1827 conditions per place. [2024-10-13 12:39:12,422 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 592 selfloop transitions, 86 changer transitions 5/684 dead transitions. [2024-10-13 12:39:12,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 684 transitions, 14858 flow [2024-10-13 12:39:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:39:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:39:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-10-13 12:39:12,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-13 12:39:12,423 INFO L175 Difference]: Start difference. First operand has 371 places, 655 transitions, 13118 flow. Second operand 8 states and 85 transitions. [2024-10-13 12:39:12,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 684 transitions, 14858 flow [2024-10-13 12:39:13,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 684 transitions, 14569 flow, removed 112 selfloop flow, removed 3 redundant places. [2024-10-13 12:39:13,091 INFO L231 Difference]: Finished difference. Result has 376 places, 658 transitions, 13178 flow [2024-10-13 12:39:13,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12833, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13178, PETRI_PLACES=376, PETRI_TRANSITIONS=658} [2024-10-13 12:39:13,092 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 354 predicate places. [2024-10-13 12:39:13,092 INFO L471 AbstractCegarLoop]: Abstraction has has 376 places, 658 transitions, 13178 flow [2024-10-13 12:39:13,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-13 12:39:13,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:13,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:13,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:13,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:13,294 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:13,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2005925891, now seen corresponding path program 42 times [2024-10-13 12:39:13,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:13,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564607268] [2024-10-13 12:39:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:13,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:13,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564607268] [2024-10-13 12:39:13,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564607268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632048796] [2024-10-13 12:39:13,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:39:13,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:13,542 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:13,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-13 12:39:13,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 12:39:13,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:13,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:13,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:13,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632048796] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:13,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-13 12:39:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571284982] [2024-10-13 12:39:13,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:13,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:39:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:39:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:39:13,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:13,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 658 transitions, 13178 flow. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:13,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:13,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:13,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:14,805 INFO L124 PetriNetUnfolderBase]: 1237/2048 cut-off events. [2024-10-13 12:39:14,805 INFO L125 PetriNetUnfolderBase]: For 71007/71007 co-relation queries the response was YES. [2024-10-13 12:39:14,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21215 conditions, 2048 events. 1237/2048 cut-off events. For 71007/71007 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11025 event pairs, 34 based on Foata normal form. 1/2049 useless extension candidates. Maximal degree in co-relation 21054. Up to 1867 conditions per place. [2024-10-13 12:39:14,926 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 605 selfloop transitions, 70 changer transitions 4/680 dead transitions. [2024-10-13 12:39:14,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 680 transitions, 14737 flow [2024-10-13 12:39:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:39:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:39:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-10-13 12:39:14,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:39:14,927 INFO L175 Difference]: Start difference. First operand has 376 places, 658 transitions, 13178 flow. Second operand 8 states and 80 transitions. [2024-10-13 12:39:14,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 680 transitions, 14737 flow [2024-10-13 12:39:15,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 680 transitions, 14495 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-10-13 12:39:15,513 INFO L231 Difference]: Finished difference. Result has 379 places, 661 transitions, 13241 flow [2024-10-13 12:39:15,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12938, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13241, PETRI_PLACES=379, PETRI_TRANSITIONS=661} [2024-10-13 12:39:15,514 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 357 predicate places. [2024-10-13 12:39:15,514 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 661 transitions, 13241 flow [2024-10-13 12:39:15,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:15,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:15,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:15,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:15,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:15,719 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:15,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1761351975, now seen corresponding path program 43 times [2024-10-13 12:39:15,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:15,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560322414] [2024-10-13 12:39:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:15,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:15,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560322414] [2024-10-13 12:39:15,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560322414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519262690] [2024-10-13 12:39:15,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:39:15,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:15,944 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-13 12:39:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:16,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:16,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:16,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:16,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519262690] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:16,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:16,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 12:39:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380266055] [2024-10-13 12:39:16,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:16,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:39:16,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:16,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:39:16,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:39:16,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:16,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 661 transitions, 13241 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:16,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:16,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:17,491 INFO L124 PetriNetUnfolderBase]: 1347/2276 cut-off events. [2024-10-13 12:39:17,491 INFO L125 PetriNetUnfolderBase]: For 83717/83717 co-relation queries the response was YES. [2024-10-13 12:39:17,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23749 conditions, 2276 events. 1347/2276 cut-off events. For 83717/83717 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12909 event pairs, 39 based on Foata normal form. 2/2278 useless extension candidates. Maximal degree in co-relation 23571. Up to 1961 conditions per place. [2024-10-13 12:39:17,534 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 643 selfloop transitions, 94 changer transitions 23/761 dead transitions. [2024-10-13 12:39:17,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 761 transitions, 16568 flow [2024-10-13 12:39:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:39:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:39:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-10-13 12:39:17,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:39:17,536 INFO L175 Difference]: Start difference. First operand has 379 places, 661 transitions, 13241 flow. Second operand 12 states and 120 transitions. [2024-10-13 12:39:17,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 761 transitions, 16568 flow [2024-10-13 12:39:18,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 761 transitions, 16298 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-10-13 12:39:18,349 INFO L231 Difference]: Finished difference. Result has 393 places, 707 transitions, 14566 flow [2024-10-13 12:39:18,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12979, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14566, PETRI_PLACES=393, PETRI_TRANSITIONS=707} [2024-10-13 12:39:18,351 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 371 predicate places. [2024-10-13 12:39:18,351 INFO L471 AbstractCegarLoop]: Abstraction has has 393 places, 707 transitions, 14566 flow [2024-10-13 12:39:18,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:18,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:18,352 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:18,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-13 12:39:18,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-10-13 12:39:18,555 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:18,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash -894747047, now seen corresponding path program 44 times [2024-10-13 12:39:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:18,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531212211] [2024-10-13 12:39:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:18,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531212211] [2024-10-13 12:39:18,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531212211] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36422850] [2024-10-13 12:39:18,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:39:18,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:18,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:18,826 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:18,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-13 12:39:18,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:18,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:18,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:18,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:19,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:19,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36422850] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:19,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 12:39:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264612353] [2024-10-13 12:39:19,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:19,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 12:39:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 12:39:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-13 12:39:19,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:19,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 707 transitions, 14566 flow. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:19,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:19,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:19,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:20,097 INFO L124 PetriNetUnfolderBase]: 1399/2367 cut-off events. [2024-10-13 12:39:20,097 INFO L125 PetriNetUnfolderBase]: For 97387/97387 co-relation queries the response was YES. [2024-10-13 12:39:20,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25298 conditions, 2367 events. 1399/2367 cut-off events. For 97387/97387 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13564 event pairs, 41 based on Foata normal form. 1/2368 useless extension candidates. Maximal degree in co-relation 25089. Up to 1967 conditions per place. [2024-10-13 12:39:20,135 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 673 selfloop transitions, 111 changer transitions 4/789 dead transitions. [2024-10-13 12:39:20,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 789 transitions, 17660 flow [2024-10-13 12:39:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:39:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:39:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-10-13 12:39:20,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-10-13 12:39:20,136 INFO L175 Difference]: Start difference. First operand has 393 places, 707 transitions, 14566 flow. Second operand 10 states and 111 transitions. [2024-10-13 12:39:20,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 789 transitions, 17660 flow [2024-10-13 12:39:20,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 789 transitions, 16988 flow, removed 336 selfloop flow, removed 2 redundant places. [2024-10-13 12:39:20,922 INFO L231 Difference]: Finished difference. Result has 402 places, 738 transitions, 15081 flow [2024-10-13 12:39:20,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=13924, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15081, PETRI_PLACES=402, PETRI_TRANSITIONS=738} [2024-10-13 12:39:20,923 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 380 predicate places. [2024-10-13 12:39:20,923 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 738 transitions, 15081 flow [2024-10-13 12:39:20,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:20,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:20,923 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:20,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:21,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-10-13 12:39:21,128 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:21,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash -479564391, now seen corresponding path program 45 times [2024-10-13 12:39:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977132668] [2024-10-13 12:39:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:21,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977132668] [2024-10-13 12:39:21,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977132668] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:21,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202567649] [2024-10-13 12:39:21,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:21,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:21,279 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:21,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-13 12:39:21,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:39:21,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:21,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:21,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:21,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202567649] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:21,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-13 12:39:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347410839] [2024-10-13 12:39:21,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:21,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:39:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:39:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:39:21,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:21,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 738 transitions, 15081 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-13 12:39:21,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:21,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:21,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:22,435 INFO L124 PetriNetUnfolderBase]: 1436/2439 cut-off events. [2024-10-13 12:39:22,436 INFO L125 PetriNetUnfolderBase]: For 97396/97396 co-relation queries the response was YES. [2024-10-13 12:39:22,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25509 conditions, 2439 events. 1436/2439 cut-off events. For 97396/97396 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14135 event pairs, 38 based on Foata normal form. 2/2441 useless extension candidates. Maximal degree in co-relation 25308. Up to 2202 conditions per place. [2024-10-13 12:39:22,472 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 698 selfloop transitions, 75 changer transitions 12/786 dead transitions. [2024-10-13 12:39:22,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 786 transitions, 17328 flow [2024-10-13 12:39:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:39:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:39:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-10-13 12:39:22,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-10-13 12:39:22,474 INFO L175 Difference]: Start difference. First operand has 402 places, 738 transitions, 15081 flow. Second operand 10 states and 99 transitions. [2024-10-13 12:39:22,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 786 transitions, 17328 flow [2024-10-13 12:39:23,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 786 transitions, 16952 flow, removed 154 selfloop flow, removed 3 redundant places. [2024-10-13 12:39:23,215 INFO L231 Difference]: Finished difference. Result has 413 places, 754 transitions, 15355 flow [2024-10-13 12:39:23,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14709, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15355, PETRI_PLACES=413, PETRI_TRANSITIONS=754} [2024-10-13 12:39:23,216 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 391 predicate places. [2024-10-13 12:39:23,216 INFO L471 AbstractCegarLoop]: Abstraction has has 413 places, 754 transitions, 15355 flow [2024-10-13 12:39:23,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-13 12:39:23,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:23,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:23,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:23,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-13 12:39:23,417 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:23,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash 823002013, now seen corresponding path program 46 times [2024-10-13 12:39:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427033945] [2024-10-13 12:39:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427033945] [2024-10-13 12:39:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427033945] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259042594] [2024-10-13 12:39:23,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:39:23,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:23,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:23,633 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:23,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-13 12:39:23,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:39:23,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:23,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:23,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:23,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259042594] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:23,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 12:39:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396705710] [2024-10-13 12:39:23,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:23,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:39:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:39:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:39:23,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:23,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 754 transitions, 15355 flow. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:23,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:23,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:23,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:24,827 INFO L124 PetriNetUnfolderBase]: 1424/2411 cut-off events. [2024-10-13 12:39:24,827 INFO L125 PetriNetUnfolderBase]: For 90515/90515 co-relation queries the response was YES. [2024-10-13 12:39:24,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25178 conditions, 2411 events. 1424/2411 cut-off events. For 90515/90515 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13862 event pairs, 38 based on Foata normal form. 1/2412 useless extension candidates. Maximal degree in co-relation 24965. Up to 2091 conditions per place. [2024-10-13 12:39:24,863 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 683 selfloop transitions, 110 changer transitions 4/798 dead transitions. [2024-10-13 12:39:24,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 798 transitions, 17591 flow [2024-10-13 12:39:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:39:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:39:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-10-13 12:39:24,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-10-13 12:39:24,864 INFO L175 Difference]: Start difference. First operand has 413 places, 754 transitions, 15355 flow. Second operand 11 states and 111 transitions. [2024-10-13 12:39:24,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 798 transitions, 17591 flow [2024-10-13 12:39:25,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 798 transitions, 17185 flow, removed 156 selfloop flow, removed 5 redundant places. [2024-10-13 12:39:25,558 INFO L231 Difference]: Finished difference. Result has 418 places, 762 transitions, 15477 flow [2024-10-13 12:39:25,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14967, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15477, PETRI_PLACES=418, PETRI_TRANSITIONS=762} [2024-10-13 12:39:25,559 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 396 predicate places. [2024-10-13 12:39:25,559 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 762 transitions, 15477 flow [2024-10-13 12:39:25,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:25,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:25,560 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:25,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:25,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-13 12:39:25,760 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:25,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1399807207, now seen corresponding path program 47 times [2024-10-13 12:39:25,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:25,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138427713] [2024-10-13 12:39:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:25,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138427713] [2024-10-13 12:39:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138427713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79311379] [2024-10-13 12:39:25,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:39:25,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:25,929 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:25,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-13 12:39:25,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:39:25,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:25,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:25,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:26,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:26,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79311379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:26,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:26,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-10-13 12:39:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229625652] [2024-10-13 12:39:26,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:26,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:39:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:39:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:39:26,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:26,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 762 transitions, 15477 flow. Second operand has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:26,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:26,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:26,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:27,125 INFO L124 PetriNetUnfolderBase]: 1472/2487 cut-off events. [2024-10-13 12:39:27,125 INFO L125 PetriNetUnfolderBase]: For 95027/95027 co-relation queries the response was YES. [2024-10-13 12:39:27,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25761 conditions, 2487 events. 1472/2487 cut-off events. For 95027/95027 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14356 event pairs, 42 based on Foata normal form. 1/2488 useless extension candidates. Maximal degree in co-relation 25553. Up to 2204 conditions per place. [2024-10-13 12:39:27,161 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 715 selfloop transitions, 94 changer transitions 6/816 dead transitions. [2024-10-13 12:39:27,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 816 transitions, 17967 flow [2024-10-13 12:39:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:39:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:39:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-10-13 12:39:27,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-13 12:39:27,162 INFO L175 Difference]: Start difference. First operand has 418 places, 762 transitions, 15477 flow. Second operand 8 states and 90 transitions. [2024-10-13 12:39:27,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 816 transitions, 17967 flow [2024-10-13 12:39:27,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 816 transitions, 17629 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-10-13 12:39:27,892 INFO L231 Difference]: Finished difference. Result has 420 places, 783 transitions, 15942 flow [2024-10-13 12:39:27,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15145, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15942, PETRI_PLACES=420, PETRI_TRANSITIONS=783} [2024-10-13 12:39:27,893 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 398 predicate places. [2024-10-13 12:39:27,893 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 783 transitions, 15942 flow [2024-10-13 12:39:27,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:27,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:27,894 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:27,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:28,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:28,095 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:28,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash -972501557, now seen corresponding path program 48 times [2024-10-13 12:39:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:28,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706592306] [2024-10-13 12:39:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:28,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706592306] [2024-10-13 12:39:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706592306] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720787809] [2024-10-13 12:39:28,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:39:28,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:28,288 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:28,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-13 12:39:28,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 12:39:28,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:28,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:28,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:28,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720787809] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:28,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-13 12:39:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471244182] [2024-10-13 12:39:28,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:28,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:39:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:39:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:39:28,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:28,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 783 transitions, 15942 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:28,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:28,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:29,602 INFO L124 PetriNetUnfolderBase]: 1467/2476 cut-off events. [2024-10-13 12:39:29,602 INFO L125 PetriNetUnfolderBase]: For 92449/92449 co-relation queries the response was YES. [2024-10-13 12:39:29,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25598 conditions, 2476 events. 1467/2476 cut-off events. For 92449/92449 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 14299 event pairs, 43 based on Foata normal form. 1/2477 useless extension candidates. Maximal degree in co-relation 25392. Up to 2110 conditions per place. [2024-10-13 12:39:29,638 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 703 selfloop transitions, 109 changer transitions 4/817 dead transitions. [2024-10-13 12:39:29,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 817 transitions, 17991 flow [2024-10-13 12:39:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:39:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:39:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-10-13 12:39:29,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-10-13 12:39:29,639 INFO L175 Difference]: Start difference. First operand has 420 places, 783 transitions, 15942 flow. Second operand 10 states and 103 transitions. [2024-10-13 12:39:29,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 817 transitions, 17991 flow [2024-10-13 12:39:30,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 817 transitions, 17677 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-10-13 12:39:30,354 INFO L231 Difference]: Finished difference. Result has 426 places, 786 transitions, 16023 flow [2024-10-13 12:39:30,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15634, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16023, PETRI_PLACES=426, PETRI_TRANSITIONS=786} [2024-10-13 12:39:30,359 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 404 predicate places. [2024-10-13 12:39:30,359 INFO L471 AbstractCegarLoop]: Abstraction has has 426 places, 786 transitions, 16023 flow [2024-10-13 12:39:30,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:30,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:30,359 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:30,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:30,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:30,560 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:30,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1477561717, now seen corresponding path program 49 times [2024-10-13 12:39:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887962814] [2024-10-13 12:39:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:30,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:30,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887962814] [2024-10-13 12:39:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887962814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014237152] [2024-10-13 12:39:30,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:39:30,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:30,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:30,759 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:30,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-13 12:39:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:30,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:39:30,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:30,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014237152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:31,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-13 12:39:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385096708] [2024-10-13 12:39:31,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:31,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:39:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:39:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:39:31,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:31,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 786 transitions, 16023 flow. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:31,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:31,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:31,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:32,090 INFO L124 PetriNetUnfolderBase]: 1465/2468 cut-off events. [2024-10-13 12:39:32,091 INFO L125 PetriNetUnfolderBase]: For 89587/89587 co-relation queries the response was YES. [2024-10-13 12:39:32,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25464 conditions, 2468 events. 1465/2468 cut-off events. For 89587/89587 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14182 event pairs, 41 based on Foata normal form. 1/2469 useless extension candidates. Maximal degree in co-relation 25260. Up to 2197 conditions per place. [2024-10-13 12:39:32,126 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 716 selfloop transitions, 92 changer transitions 6/815 dead transitions. [2024-10-13 12:39:32,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 815 transitions, 17887 flow [2024-10-13 12:39:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:39:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:39:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-10-13 12:39:32,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-10-13 12:39:32,127 INFO L175 Difference]: Start difference. First operand has 426 places, 786 transitions, 16023 flow. Second operand 9 states and 94 transitions. [2024-10-13 12:39:32,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 815 transitions, 17887 flow [2024-10-13 12:39:32,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 815 transitions, 17600 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-10-13 12:39:32,852 INFO L231 Difference]: Finished difference. Result has 429 places, 788 transitions, 16042 flow [2024-10-13 12:39:32,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15740, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16042, PETRI_PLACES=429, PETRI_TRANSITIONS=788} [2024-10-13 12:39:32,853 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 407 predicate places. [2024-10-13 12:39:32,854 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 788 transitions, 16042 flow [2024-10-13 12:39:32,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:32,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:32,854 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:32,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-10-13 12:39:33,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:33,059 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:33,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -403040810, now seen corresponding path program 50 times [2024-10-13 12:39:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:33,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72962644] [2024-10-13 12:39:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72962644] [2024-10-13 12:39:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72962644] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030584175] [2024-10-13 12:39:33,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:39:33,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:33,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:33,186 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:33,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-13 12:39:33,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:33,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:33,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:39:33,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:33,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030584175] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:33,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:33,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 12:39:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250607646] [2024-10-13 12:39:33,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:33,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:39:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:39:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:39:33,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:33,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 788 transitions, 16042 flow. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 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) [2024-10-13 12:39:33,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:33,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:34,597 INFO L124 PetriNetUnfolderBase]: 1929/3271 cut-off events. [2024-10-13 12:39:34,597 INFO L125 PetriNetUnfolderBase]: For 124121/124121 co-relation queries the response was YES. [2024-10-13 12:39:34,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33294 conditions, 3271 events. 1929/3271 cut-off events. For 124121/124121 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 19774 event pairs, 93 based on Foata normal form. 13/3284 useless extension candidates. Maximal degree in co-relation 33065. Up to 1059 conditions per place. [2024-10-13 12:39:34,641 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 649 selfloop transitions, 430 changer transitions 0/1080 dead transitions. [2024-10-13 12:39:34,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1080 transitions, 23785 flow [2024-10-13 12:39:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:39:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:39:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-10-13 12:39:34,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-10-13 12:39:34,642 INFO L175 Difference]: Start difference. First operand has 429 places, 788 transitions, 16042 flow. Second operand 13 states and 126 transitions. [2024-10-13 12:39:34,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1080 transitions, 23785 flow [2024-10-13 12:39:35,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1080 transitions, 23474 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-10-13 12:39:35,501 INFO L231 Difference]: Finished difference. Result has 441 places, 943 transitions, 20736 flow [2024-10-13 12:39:35,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15821, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20736, PETRI_PLACES=441, PETRI_TRANSITIONS=943} [2024-10-13 12:39:35,502 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 419 predicate places. [2024-10-13 12:39:35,502 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 943 transitions, 20736 flow [2024-10-13 12:39:35,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 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) [2024-10-13 12:39:35,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:35,502 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:35,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:35,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:35,703 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:35,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash 580662329, now seen corresponding path program 51 times [2024-10-13 12:39:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040267567] [2024-10-13 12:39:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:35,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:35,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040267567] [2024-10-13 12:39:35,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040267567] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:35,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611353081] [2024-10-13 12:39:35,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:35,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:35,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:35,762 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:35,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-13 12:39:35,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:39:35,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:35,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:39:35,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:35,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611353081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:35,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 12:39:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834795096] [2024-10-13 12:39:35,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:39:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:39:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:39:35,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:35,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 943 transitions, 20736 flow. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 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) [2024-10-13 12:39:35,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:35,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:35,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:37,209 INFO L124 PetriNetUnfolderBase]: 1932/3283 cut-off events. [2024-10-13 12:39:37,210 INFO L125 PetriNetUnfolderBase]: For 136793/136793 co-relation queries the response was YES. [2024-10-13 12:39:37,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35076 conditions, 3283 events. 1932/3283 cut-off events. For 136793/136793 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 19981 event pairs, 360 based on Foata normal form. 3/3286 useless extension candidates. Maximal degree in co-relation 34718. Up to 2061 conditions per place. [2024-10-13 12:39:37,256 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 802 selfloop transitions, 245 changer transitions 12/1060 dead transitions. [2024-10-13 12:39:37,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1060 transitions, 24891 flow [2024-10-13 12:39:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:39:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:39:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-10-13 12:39:37,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:39:37,258 INFO L175 Difference]: Start difference. First operand has 441 places, 943 transitions, 20736 flow. Second operand 9 states and 90 transitions. [2024-10-13 12:39:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1060 transitions, 24891 flow [2024-10-13 12:39:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1060 transitions, 24470 flow, removed 120 selfloop flow, removed 3 redundant places. [2024-10-13 12:39:38,376 INFO L231 Difference]: Finished difference. Result has 449 places, 941 transitions, 20763 flow [2024-10-13 12:39:38,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=20315, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20763, PETRI_PLACES=449, PETRI_TRANSITIONS=941} [2024-10-13 12:39:38,379 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 427 predicate places. [2024-10-13 12:39:38,379 INFO L471 AbstractCegarLoop]: Abstraction has has 449 places, 941 transitions, 20763 flow [2024-10-13 12:39:38,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 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) [2024-10-13 12:39:38,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:38,379 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:38,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-10-13 12:39:38,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:38,580 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:38,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -894717218, now seen corresponding path program 52 times [2024-10-13 12:39:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:38,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614093662] [2024-10-13 12:39:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:38,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614093662] [2024-10-13 12:39:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614093662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:38,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452484908] [2024-10-13 12:39:38,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:39:38,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:38,724 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:38,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-13 12:39:38,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:39:38,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:38,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:39:38,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452484908] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:39,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:39,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-13 12:39:39,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999973808] [2024-10-13 12:39:39,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:39,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:39:39,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:39:39,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:39:39,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:39,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 941 transitions, 20763 flow. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:39,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:39,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:39,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:40,834 INFO L124 PetriNetUnfolderBase]: 2017/3418 cut-off events. [2024-10-13 12:39:40,834 INFO L125 PetriNetUnfolderBase]: For 147379/147379 co-relation queries the response was YES. [2024-10-13 12:39:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36784 conditions, 3418 events. 2017/3418 cut-off events. For 147379/147379 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 20896 event pairs, 184 based on Foata normal form. 16/3434 useless extension candidates. Maximal degree in co-relation 36423. Up to 1537 conditions per place. [2024-10-13 12:39:40,909 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 647 selfloop transitions, 383 changer transitions 0/1031 dead transitions. [2024-10-13 12:39:40,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1031 transitions, 24452 flow [2024-10-13 12:39:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 12:39:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 12:39:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-10-13 12:39:40,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-10-13 12:39:40,911 INFO L175 Difference]: Start difference. First operand has 449 places, 941 transitions, 20763 flow. Second operand 19 states and 164 transitions. [2024-10-13 12:39:40,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1031 transitions, 24452 flow [2024-10-13 12:39:42,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1031 transitions, 23859 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-13 12:39:42,105 INFO L231 Difference]: Finished difference. Result has 464 places, 984 transitions, 22141 flow [2024-10-13 12:39:42,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=20185, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=22141, PETRI_PLACES=464, PETRI_TRANSITIONS=984} [2024-10-13 12:39:42,107 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 442 predicate places. [2024-10-13 12:39:42,107 INFO L471 AbstractCegarLoop]: Abstraction has has 464 places, 984 transitions, 22141 flow [2024-10-13 12:39:42,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:42,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:42,107 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:42,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:42,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-10-13 12:39:42,308 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:42,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash -953935908, now seen corresponding path program 53 times [2024-10-13 12:39:42,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:42,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111887424] [2024-10-13 12:39:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111887424] [2024-10-13 12:39:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111887424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738277170] [2024-10-13 12:39:42,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:39:42,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:42,379 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:42,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-13 12:39:42,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 12:39:42,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:42,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:39:42,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:42,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:42,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738277170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:42,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:42,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 12:39:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322462374] [2024-10-13 12:39:42,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:42,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:39:42,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:42,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:39:42,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:39:42,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:42,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 984 transitions, 22141 flow. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:42,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:42,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:42,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:44,213 INFO L124 PetriNetUnfolderBase]: 2148/3626 cut-off events. [2024-10-13 12:39:44,213 INFO L125 PetriNetUnfolderBase]: For 179588/179588 co-relation queries the response was YES. [2024-10-13 12:39:44,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41111 conditions, 3626 events. 2148/3626 cut-off events. For 179588/179588 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 22299 event pairs, 151 based on Foata normal form. 20/3646 useless extension candidates. Maximal degree in co-relation 40738. Up to 1267 conditions per place. [2024-10-13 12:39:44,269 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 546 selfloop transitions, 553 changer transitions 0/1100 dead transitions. [2024-10-13 12:39:44,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1100 transitions, 27574 flow [2024-10-13 12:39:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 12:39:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 12:39:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 209 transitions. [2024-10-13 12:39:44,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4354166666666667 [2024-10-13 12:39:44,270 INFO L175 Difference]: Start difference. First operand has 464 places, 984 transitions, 22141 flow. Second operand 24 states and 209 transitions. [2024-10-13 12:39:44,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1100 transitions, 27574 flow [2024-10-13 12:39:45,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1100 transitions, 26887 flow, removed 263 selfloop flow, removed 4 redundant places. [2024-10-13 12:39:45,600 INFO L231 Difference]: Finished difference. Result has 491 places, 1060 transitions, 26082 flow [2024-10-13 12:39:45,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=21706, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=26082, PETRI_PLACES=491, PETRI_TRANSITIONS=1060} [2024-10-13 12:39:45,601 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 469 predicate places. [2024-10-13 12:39:45,601 INFO L471 AbstractCegarLoop]: Abstraction has has 491 places, 1060 transitions, 26082 flow [2024-10-13 12:39:45,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:45,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:45,602 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:45,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:45,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-10-13 12:39:45,802 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:45,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash -546081856, now seen corresponding path program 54 times [2024-10-13 12:39:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042406908] [2024-10-13 12:39:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:45,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042406908] [2024-10-13 12:39:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042406908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097297014] [2024-10-13 12:39:45,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:39:45,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:45,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:45,870 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:45,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-13 12:39:45,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 12:39:45,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:45,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:39:45,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:45,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:45,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097297014] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:45,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:45,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 12:39:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158494857] [2024-10-13 12:39:45,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:45,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:39:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:39:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:39:45,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:45,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1060 transitions, 26082 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:45,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:45,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:45,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:47,843 INFO L124 PetriNetUnfolderBase]: 2146/3632 cut-off events. [2024-10-13 12:39:47,843 INFO L125 PetriNetUnfolderBase]: For 183233/183233 co-relation queries the response was YES. [2024-10-13 12:39:47,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42710 conditions, 3632 events. 2146/3632 cut-off events. For 183233/183233 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 22494 event pairs, 239 based on Foata normal form. 8/3640 useless extension candidates. Maximal degree in co-relation 42313. Up to 1417 conditions per place. [2024-10-13 12:39:47,933 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 609 selfloop transitions, 480 changer transitions 4/1094 dead transitions. [2024-10-13 12:39:47,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1094 transitions, 28616 flow [2024-10-13 12:39:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 12:39:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 12:39:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 163 transitions. [2024-10-13 12:39:47,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-10-13 12:39:47,934 INFO L175 Difference]: Start difference. First operand has 491 places, 1060 transitions, 26082 flow. Second operand 19 states and 163 transitions. [2024-10-13 12:39:47,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1094 transitions, 28616 flow [2024-10-13 12:39:50,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1094 transitions, 26215 flow, removed 927 selfloop flow, removed 18 redundant places. [2024-10-13 12:39:50,184 INFO L231 Difference]: Finished difference. Result has 493 places, 1058 transitions, 24671 flow [2024-10-13 12:39:50,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23682, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=24671, PETRI_PLACES=493, PETRI_TRANSITIONS=1058} [2024-10-13 12:39:50,186 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 471 predicate places. [2024-10-13 12:39:50,186 INFO L471 AbstractCegarLoop]: Abstraction has has 493 places, 1058 transitions, 24671 flow [2024-10-13 12:39:50,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:50,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:50,186 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:50,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:50,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-10-13 12:39:50,387 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:50,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1267464512, now seen corresponding path program 55 times [2024-10-13 12:39:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:50,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903770928] [2024-10-13 12:39:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat