./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:54:58,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:54:58,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:54:58,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:54:58,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:54:58,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:54:58,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:54:58,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:54:58,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:54:58,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:54:58,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:54:58,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:54:58,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:54:58,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:54:58,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:54:58,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:54:58,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:54:58,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:54:58,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:54:58,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:54:58,613 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:54:58,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:54:58,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:54:58,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:54:58,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:54:58,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:54:58,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:54:58,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:54:58,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:54:58,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:54:58,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:54:58,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:54:58,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:54:58,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:54:58,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:54:58,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:54:58,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-11-19 09:54:58,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:54:58,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:54:58,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:54:58,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:54:58,841 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:54:58,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-19 09:55:00,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:55:00,228 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:55:00,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-19 09:55:00,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adc6e73a/a5a78a988aaf4414be1f523163307063/FLAG56deaabbc [2024-11-19 09:55:00,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adc6e73a/a5a78a988aaf4414be1f523163307063 [2024-11-19 09:55:00,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:55:00,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:55:00,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:55:00,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:55:00,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:55:00,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59713011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00, skipping insertion in model container [2024-11-19 09:55:00,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:55:00,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:55:00,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:55:00,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:55:00,477 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:55:00,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00 WrapperNode [2024-11-19 09:55:00,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:55:00,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:55:00,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:55:00,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:55:00,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,504 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2024-11-19 09:55:00,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:55:00,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:55:00,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:55:00,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:55:00,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,522 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 09:55:00,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:55:00,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:55:00,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:55:00,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:55:00,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (1/1) ... [2024-11-19 09:55:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:55:00,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:00,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:55:00,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:55:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:55:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:55:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:55:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:55:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:55:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:55:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:55:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:55:00,608 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:55:00,687 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:55:00,689 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:55:00,812 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:55:00,813 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:55:00,917 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:55:00,917 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:55:00,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:55:00 BoogieIcfgContainer [2024-11-19 09:55:00,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:55:00,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:55:00,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:55:00,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:55:00,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:55:00" (1/3) ... [2024-11-19 09:55:00,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3468e9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:55:00, skipping insertion in model container [2024-11-19 09:55:00,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:55:00" (2/3) ... [2024-11-19 09:55:00,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3468e9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:55:00, skipping insertion in model container [2024-11-19 09:55:00,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:55:00" (3/3) ... [2024-11-19 09:55:00,923 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-11-19 09:55:00,936 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:55:00,936 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:55:00,936 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:55:00,970 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:55:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-19 09:55:01,014 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-19 09:55:01,016 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:55:01,018 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 2. Compared 10 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. [2024-11-19 09:55:01,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-19 09:55:01,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-19 09:55:01,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:55:01,041 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;@8550f98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:55:01,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:55:01,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:55:01,055 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-19 09:55:01,055 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:55:01,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:01,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:01,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:01,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash 206962796, now seen corresponding path program 1 times [2024-11-19 09:55:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035663184] [2024-11-19 09:55:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:55:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:01,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035663184] [2024-11-19 09:55:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035663184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:01,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:55:01,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:55:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433040364] [2024-11-19 09:55:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:01,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:55:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:01,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:55:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:55:01,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:01,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:01,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:01,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:01,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:01,369 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-11-19 09:55:01,370 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 09:55:01,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 289 event pairs, 8 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2024-11-19 09:55:01,372 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-11-19 09:55:01,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-11-19 09:55:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:55:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:55:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-11-19 09:55:01,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-19 09:55:01,382 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 41 transitions. [2024-11-19 09:55:01,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-11-19 09:55:01,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:55:01,386 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-19 09:55:01,387 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-19 09:55:01,390 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-19 09:55:01,390 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-19 09:55:01,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:01,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:01,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:01,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:55:01,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:01,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1915398664, now seen corresponding path program 1 times [2024-11-19 09:55:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019307294] [2024-11-19 09:55:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:55:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:01,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019307294] [2024-11-19 09:55:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019307294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:01,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:55:01,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:55:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761075859] [2024-11-19 09:55:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:01,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:55:01,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:55:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:55:01,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:01,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:01,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:01,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:01,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:01,603 INFO L124 PetriNetUnfolderBase]: 62/118 cut-off events. [2024-11-19 09:55:01,603 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-19 09:55:01,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 118 events. 62/118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 341 event pairs, 6 based on Foata normal form. 4/118 useless extension candidates. Maximal degree in co-relation 112. Up to 56 conditions per place. [2024-11-19 09:55:01,609 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-11-19 09:55:01,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 169 flow [2024-11-19 09:55:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:55:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:55:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-19 09:55:01,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:55:01,610 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 60 transitions. [2024-11-19 09:55:01,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 169 flow [2024-11-19 09:55:01,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:55:01,612 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2024-11-19 09:55:01,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-19 09:55:01,613 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2024-11-19 09:55:01,613 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2024-11-19 09:55:01,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:01,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:01,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:01,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:55:01,615 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:01,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1112765758, now seen corresponding path program 2 times [2024-11-19 09:55:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664886245] [2024-11-19 09:55:01,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:01,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:01,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:01,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:01,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664886245] [2024-11-19 09:55:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664886245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079546349] [2024-11-19 09:55:01,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:01,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:01,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:01,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:01,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:55:01,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:01,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:01,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:55:01,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:01,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079546349] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:01,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:55:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-11-19 09:55:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703803225] [2024-11-19 09:55:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:01,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:55:01,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:55:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:55:01,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:01,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:01,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:01,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:01,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:01,937 INFO L124 PetriNetUnfolderBase]: 56/110 cut-off events. [2024-11-19 09:55:01,938 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-19 09:55:01,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 110 events. 56/110 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 313 event pairs, 8 based on Foata normal form. 5/111 useless extension candidates. Maximal degree in co-relation 244. Up to 46 conditions per place. [2024-11-19 09:55:01,941 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 22 selfloop transitions, 8 changer transitions 2/35 dead transitions. [2024-11-19 09:55:01,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 216 flow [2024-11-19 09:55:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:55:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:55:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-19 09:55:01,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-19 09:55:01,943 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 52 transitions. [2024-11-19 09:55:01,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 216 flow [2024-11-19 09:55:01,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:55:01,946 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 127 flow [2024-11-19 09:55:01,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-11-19 09:55:01,947 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-19 09:55:01,947 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 127 flow [2024-11-19 09:55:01,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:01,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:01,948 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:01,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:02,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:02,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:02,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2119804075, now seen corresponding path program 1 times [2024-11-19 09:55:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752072388] [2024-11-19 09:55:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:55:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:02,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:02,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752072388] [2024-11-19 09:55:02,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752072388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:02,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:55:02,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:55:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316818039] [2024-11-19 09:55:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:02,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:55:02,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:55:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:55:02,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:02,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:02,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:02,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:02,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:02,275 INFO L124 PetriNetUnfolderBase]: 54/116 cut-off events. [2024-11-19 09:55:02,276 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-11-19 09:55:02,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 116 events. 54/116 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 330 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 220. Up to 44 conditions per place. [2024-11-19 09:55:02,278 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 29 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-11-19 09:55:02,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 293 flow [2024-11-19 09:55:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:55:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:55:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-19 09:55:02,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-19 09:55:02,281 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 127 flow. Second operand 5 states and 63 transitions. [2024-11-19 09:55:02,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 293 flow [2024-11-19 09:55:02,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 261 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-19 09:55:02,285 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 161 flow [2024-11-19 09:55:02,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-19 09:55:02,286 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-11-19 09:55:02,287 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 161 flow [2024-11-19 09:55:02,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:02,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:02,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:02,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:55:02,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:02,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -76544487, now seen corresponding path program 2 times [2024-11-19 09:55:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286362561] [2024-11-19 09:55:02,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:02,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:02,299 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:02,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286362561] [2024-11-19 09:55:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286362561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:55:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:55:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616004356] [2024-11-19 09:55:02,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:02,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:55:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:02,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:55:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:55:02,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:02,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:02,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:02,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:02,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:02,392 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2024-11-19 09:55:02,392 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-19 09:55:02,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 93 events. 43/93 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 5 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 286. Up to 76 conditions per place. [2024-11-19 09:55:02,393 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 22 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-11-19 09:55:02,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 225 flow [2024-11-19 09:55:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:55:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:55:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-11-19 09:55:02,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-19 09:55:02,394 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 161 flow. Second operand 4 states and 46 transitions. [2024-11-19 09:55:02,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 225 flow [2024-11-19 09:55:02,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 219 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 09:55:02,396 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 163 flow [2024-11-19 09:55:02,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-11-19 09:55:02,397 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2024-11-19 09:55:02,397 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 163 flow [2024-11-19 09:55:02,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:02,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:02,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:02,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:55:02,398 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:02,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash 819771023, now seen corresponding path program 1 times [2024-11-19 09:55:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:02,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851352565] [2024-11-19 09:55:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:55:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:02,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:02,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851352565] [2024-11-19 09:55:02,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851352565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:02,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689617556] [2024-11-19 09:55:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:55:02,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:02,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:02,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:02,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:55:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:02,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:02,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:02,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:02,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689617556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:02,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:02,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 09:55:02,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016228732] [2024-11-19 09:55:02,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:02,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:55:02,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:02,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:55:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:55:02,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:02,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:02,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:02,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:02,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:02,977 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2024-11-19 09:55:02,978 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-11-19 09:55:02,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 193 events. 98/193 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 639 event pairs, 0 based on Foata normal form. 17/209 useless extension candidates. Maximal degree in co-relation 448. Up to 76 conditions per place. [2024-11-19 09:55:02,980 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2024-11-19 09:55:02,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 549 flow [2024-11-19 09:55:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:55:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:55:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-11-19 09:55:02,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-19 09:55:02,983 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 163 flow. Second operand 9 states and 111 transitions. [2024-11-19 09:55:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 549 flow [2024-11-19 09:55:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 530 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 09:55:02,987 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 364 flow [2024-11-19 09:55:02,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-11-19 09:55:02,988 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2024-11-19 09:55:02,988 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 364 flow [2024-11-19 09:55:02,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:02,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:02,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:03,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:55:03,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 09:55:03,190 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:03,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1922603833, now seen corresponding path program 2 times [2024-11-19 09:55:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:03,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653566019] [2024-11-19 09:55:03,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:03,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:03,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653566019] [2024-11-19 09:55:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653566019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391407567] [2024-11-19 09:55:03,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:03,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:03,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:03,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:03,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:55:03,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:03,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:03,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:55:03,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:03,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391407567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:03,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2024-11-19 09:55:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490346358] [2024-11-19 09:55:03,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:03,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:55:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:55:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:55:03,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:03,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:03,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:03,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:03,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:03,587 INFO L124 PetriNetUnfolderBase]: 143/289 cut-off events. [2024-11-19 09:55:03,587 INFO L125 PetriNetUnfolderBase]: For 1513/1513 co-relation queries the response was YES. [2024-11-19 09:55:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 289 events. 143/289 cut-off events. For 1513/1513 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1130 event pairs, 4 based on Foata normal form. 15/303 useless extension candidates. Maximal degree in co-relation 1476. Up to 91 conditions per place. [2024-11-19 09:55:03,590 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 44 selfloop transitions, 32 changer transitions 14/93 dead transitions. [2024-11-19 09:55:03,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 983 flow [2024-11-19 09:55:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:55:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:55:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-11-19 09:55:03,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-11-19 09:55:03,591 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 364 flow. Second operand 12 states and 139 transitions. [2024-11-19 09:55:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 983 flow [2024-11-19 09:55:03,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 902 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-11-19 09:55:03,596 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 632 flow [2024-11-19 09:55:03,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=632, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-19 09:55:03,597 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2024-11-19 09:55:03,597 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 632 flow [2024-11-19 09:55:03,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:03,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:03,597 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:03,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:55:03,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:03,803 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:03,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2102485498, now seen corresponding path program 3 times [2024-11-19 09:55:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:03,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745620665] [2024-11-19 09:55:03,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:03,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:55:03,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745620665] [2024-11-19 09:55:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745620665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171877823] [2024-11-19 09:55:03,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:03,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:03,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:03,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:55:03,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:55:03,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:03,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:55:03,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:03,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171877823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:03,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:03,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-19 09:55:03,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524720268] [2024-11-19 09:55:03,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:03,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:55:03,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:55:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:55:03,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:03,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 632 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2024-11-19 09:55:03,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:03,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:03,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:04,083 INFO L124 PetriNetUnfolderBase]: 148/310 cut-off events. [2024-11-19 09:55:04,083 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-11-19 09:55:04,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 310 events. 148/310 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1255 event pairs, 4 based on Foata normal form. 9/318 useless extension candidates. Maximal degree in co-relation 1835. Up to 106 conditions per place. [2024-11-19 09:55:04,086 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 58 selfloop transitions, 28 changer transitions 6/95 dead transitions. [2024-11-19 09:55:04,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 1197 flow [2024-11-19 09:55:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:55:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:55:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-19 09:55:04,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-11-19 09:55:04,087 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 632 flow. Second operand 9 states and 107 transitions. [2024-11-19 09:55:04,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 1197 flow [2024-11-19 09:55:04,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1065 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-19 09:55:04,096 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 828 flow [2024-11-19 09:55:04,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-19 09:55:04,096 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 49 predicate places. [2024-11-19 09:55:04,097 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 828 flow [2024-11-19 09:55:04,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2024-11-19 09:55:04,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:04,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:04,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:55:04,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:04,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:04,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1574603168, now seen corresponding path program 4 times [2024-11-19 09:55:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177096459] [2024-11-19 09:55:04,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:04,306 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:04,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:04,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:04,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177096459] [2024-11-19 09:55:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177096459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554569025] [2024-11-19 09:55:04,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:04,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:04,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:04,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:04,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:55:04,381 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:04,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:04,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:55:04,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:04,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:04,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554569025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:04,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:04,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-19 09:55:04,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886243106] [2024-11-19 09:55:04,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:04,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:55:04,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:55:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:55:04,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:04,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 828 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:04,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:04,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:04,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:04,638 INFO L124 PetriNetUnfolderBase]: 149/320 cut-off events. [2024-11-19 09:55:04,638 INFO L125 PetriNetUnfolderBase]: For 4063/4063 co-relation queries the response was YES. [2024-11-19 09:55:04,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 320 events. 149/320 cut-off events. For 4063/4063 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1354 event pairs, 3 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1838. Up to 119 conditions per place. [2024-11-19 09:55:04,641 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 66 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2024-11-19 09:55:04,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 1334 flow [2024-11-19 09:55:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:55:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:55:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-11-19 09:55:04,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-19 09:55:04,642 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 828 flow. Second operand 11 states and 128 transitions. [2024-11-19 09:55:04,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 1334 flow [2024-11-19 09:55:04,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 1198 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-11-19 09:55:04,651 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 963 flow [2024-11-19 09:55:04,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=963, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-11-19 09:55:04,652 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 61 predicate places. [2024-11-19 09:55:04,652 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 963 flow [2024-11-19 09:55:04,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:04,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:04,652 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:04,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:55:04,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:04,857 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:04,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash -236903776, now seen corresponding path program 5 times [2024-11-19 09:55:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:04,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114965232] [2024-11-19 09:55:04,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:04,866 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:55:04,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114965232] [2024-11-19 09:55:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114965232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755606693] [2024-11-19 09:55:04,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:04,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:04,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:04,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:04,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:55:04,943 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:55:04,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:04,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:55:04,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:04,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:05,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755606693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:05,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:05,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 09:55:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340047169] [2024-11-19 09:55:05,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:05,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:55:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:05,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:55:05,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:55:05,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:05,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 963 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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) [2024-11-19 09:55:05,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:05,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:05,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:05,202 INFO L124 PetriNetUnfolderBase]: 187/410 cut-off events. [2024-11-19 09:55:05,203 INFO L125 PetriNetUnfolderBase]: For 4701/4701 co-relation queries the response was YES. [2024-11-19 09:55:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 410 events. 187/410 cut-off events. For 4701/4701 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1873 event pairs, 4 based on Foata normal form. 10/419 useless extension candidates. Maximal degree in co-relation 2430. Up to 196 conditions per place. [2024-11-19 09:55:05,206 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 73 selfloop transitions, 45 changer transitions 0/121 dead transitions. [2024-11-19 09:55:05,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 1722 flow [2024-11-19 09:55:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:55:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:55:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-11-19 09:55:05,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-19 09:55:05,207 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 963 flow. Second operand 12 states and 132 transitions. [2024-11-19 09:55:05,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 1722 flow [2024-11-19 09:55:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 121 transitions, 1587 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-11-19 09:55:05,217 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 1404 flow [2024-11-19 09:55:05,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1404, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2024-11-19 09:55:05,217 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2024-11-19 09:55:05,217 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 1404 flow [2024-11-19 09:55:05,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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) [2024-11-19 09:55:05,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:05,218 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:05,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:05,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:05,418 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:05,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash 145789819, now seen corresponding path program 6 times [2024-11-19 09:55:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768789138] [2024-11-19 09:55:05,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:05,427 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:55:05,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768789138] [2024-11-19 09:55:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768789138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543659269] [2024-11-19 09:55:05,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:05,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:05,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:05,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:55:05,500 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:55:05,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:05,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:55:05,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:05,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543659269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:05,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:05,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-19 09:55:05,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939675751] [2024-11-19 09:55:05,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:05,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:55:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:55:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:55:05,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:05,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:05,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:05,755 INFO L124 PetriNetUnfolderBase]: 205/447 cut-off events. [2024-11-19 09:55:05,755 INFO L125 PetriNetUnfolderBase]: For 5710/5710 co-relation queries the response was YES. [2024-11-19 09:55:05,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 447 events. 205/447 cut-off events. For 5710/5710 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2088 event pairs, 4 based on Foata normal form. 5/451 useless extension candidates. Maximal degree in co-relation 2809. Up to 150 conditions per place. [2024-11-19 09:55:05,759 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 90 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2024-11-19 09:55:05,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 144 transitions, 2097 flow [2024-11-19 09:55:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:55:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:55:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-11-19 09:55:05,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-19 09:55:05,760 INFO L175 Difference]: Start difference. First operand has 96 places, 97 transitions, 1404 flow. Second operand 11 states and 128 transitions. [2024-11-19 09:55:05,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 144 transitions, 2097 flow [2024-11-19 09:55:05,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 144 transitions, 1985 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-11-19 09:55:05,774 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 1769 flow [2024-11-19 09:55:05,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1769, PETRI_PLACES=107, PETRI_TRANSITIONS=113} [2024-11-19 09:55:05,775 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2024-11-19 09:55:05,776 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 1769 flow [2024-11-19 09:55:05,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:05,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:05,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:05,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:55:05,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:05,977 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:05,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:05,978 INFO L85 PathProgramCache]: Analyzing trace with hash -555102206, now seen corresponding path program 7 times [2024-11-19 09:55:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901915671] [2024-11-19 09:55:05,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901915671] [2024-11-19 09:55:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901915671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315632300] [2024-11-19 09:55:06,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:06,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:06,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:06,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:06,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:55:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:06,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:55:06,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:06,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315632300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:06,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:06,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-19 09:55:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135935342] [2024-11-19 09:55:06,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:06,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 09:55:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 09:55:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2024-11-19 09:55:06,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:06,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions, 1769 flow. Second operand has 19 states, 19 states have (on average 8.105263157894736) internal successors, (154), 19 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:06,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:06,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:06,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:06,651 INFO L124 PetriNetUnfolderBase]: 296/632 cut-off events. [2024-11-19 09:55:06,651 INFO L125 PetriNetUnfolderBase]: For 10148/10148 co-relation queries the response was YES. [2024-11-19 09:55:06,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 632 events. 296/632 cut-off events. For 10148/10148 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3273 event pairs, 0 based on Foata normal form. 24/655 useless extension candidates. Maximal degree in co-relation 4382. Up to 244 conditions per place. [2024-11-19 09:55:06,657 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 117 selfloop transitions, 71 changer transitions 12/203 dead transitions. [2024-11-19 09:55:06,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 3331 flow [2024-11-19 09:55:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:55:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:55:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 214 transitions. [2024-11-19 09:55:06,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5631578947368421 [2024-11-19 09:55:06,658 INFO L175 Difference]: Start difference. First operand has 107 places, 113 transitions, 1769 flow. Second operand 19 states and 214 transitions. [2024-11-19 09:55:06,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 3331 flow [2024-11-19 09:55:06,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 203 transitions, 3152 flow, removed 88 selfloop flow, removed 1 redundant places. [2024-11-19 09:55:06,679 INFO L231 Difference]: Finished difference. Result has 136 places, 151 transitions, 2637 flow [2024-11-19 09:55:06,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2637, PETRI_PLACES=136, PETRI_TRANSITIONS=151} [2024-11-19 09:55:06,680 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 114 predicate places. [2024-11-19 09:55:06,680 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 151 transitions, 2637 flow [2024-11-19 09:55:06,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.105263157894736) internal successors, (154), 19 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:06,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:06,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:06,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:55:06,884 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,SelfDestructingSolverStorable11 [2024-11-19 09:55:06,885 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:06,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -447576442, now seen corresponding path program 8 times [2024-11-19 09:55:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722532223] [2024-11-19 09:55:06,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:06,890 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:06,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:06,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722532223] [2024-11-19 09:55:06,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722532223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383165404] [2024-11-19 09:55:06,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:06,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:06,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:06,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:06,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:55:06,974 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:06,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:06,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:55:06,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:07,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383165404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:07,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:07,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-11-19 09:55:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399059500] [2024-11-19 09:55:07,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:07,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:55:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:55:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:55:07,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:07,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 151 transitions, 2637 flow. Second operand has 18 states, 18 states have (on average 8.166666666666666) internal successors, (147), 18 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:07,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:07,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:07,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:08,011 INFO L124 PetriNetUnfolderBase]: 484/1013 cut-off events. [2024-11-19 09:55:08,011 INFO L125 PetriNetUnfolderBase]: For 23136/23136 co-relation queries the response was YES. [2024-11-19 09:55:08,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8480 conditions, 1013 events. 484/1013 cut-off events. For 23136/23136 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5859 event pairs, 1 based on Foata normal form. 52/1064 useless extension candidates. Maximal degree in co-relation 8353. Up to 260 conditions per place. [2024-11-19 09:55:08,020 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 139 selfloop transitions, 161 changer transitions 38/341 dead transitions. [2024-11-19 09:55:08,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 341 transitions, 6377 flow [2024-11-19 09:55:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 09:55:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 09:55:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 361 transitions. [2024-11-19 09:55:08,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546969696969697 [2024-11-19 09:55:08,022 INFO L175 Difference]: Start difference. First operand has 136 places, 151 transitions, 2637 flow. Second operand 33 states and 361 transitions. [2024-11-19 09:55:08,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 341 transitions, 6377 flow [2024-11-19 09:55:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 341 transitions, 5937 flow, removed 191 selfloop flow, removed 3 redundant places. [2024-11-19 09:55:08,096 INFO L231 Difference]: Finished difference. Result has 172 places, 234 transitions, 4643 flow [2024-11-19 09:55:08,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4643, PETRI_PLACES=172, PETRI_TRANSITIONS=234} [2024-11-19 09:55:08,097 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 150 predicate places. [2024-11-19 09:55:08,097 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 234 transitions, 4643 flow [2024-11-19 09:55:08,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.166666666666666) internal successors, (147), 18 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:08,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:08,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:08,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 09:55:08,297 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,SelfDestructingSolverStorable12 [2024-11-19 09:55:08,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:08,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 223441788, now seen corresponding path program 9 times [2024-11-19 09:55:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381634609] [2024-11-19 09:55:08,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:08,303 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:55:08,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381634609] [2024-11-19 09:55:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381634609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135041753] [2024-11-19 09:55:08,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:08,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:08,343 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:08,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:55:08,377 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:55:08,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:08,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:55:08,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:08,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135041753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:08,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:08,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 13 [2024-11-19 09:55:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720195899] [2024-11-19 09:55:08,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:08,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:55:08,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:55:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:55:08,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:08,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 234 transitions, 4643 flow. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:08,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:08,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:08,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:08,836 INFO L124 PetriNetUnfolderBase]: 501/994 cut-off events. [2024-11-19 09:55:08,836 INFO L125 PetriNetUnfolderBase]: For 23075/23075 co-relation queries the response was YES. [2024-11-19 09:55:08,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 994 events. 501/994 cut-off events. For 23075/23075 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5483 event pairs, 11 based on Foata normal form. 44/1037 useless extension candidates. Maximal degree in co-relation 8642. Up to 354 conditions per place. [2024-11-19 09:55:08,843 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 144 selfloop transitions, 70 changer transitions 90/307 dead transitions. [2024-11-19 09:55:08,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 307 transitions, 6489 flow [2024-11-19 09:55:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 09:55:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 09:55:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 183 transitions. [2024-11-19 09:55:08,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.538235294117647 [2024-11-19 09:55:08,844 INFO L175 Difference]: Start difference. First operand has 172 places, 234 transitions, 4643 flow. Second operand 17 states and 183 transitions. [2024-11-19 09:55:08,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 307 transitions, 6489 flow [2024-11-19 09:55:08,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 307 transitions, 4915 flow, removed 745 selfloop flow, removed 9 redundant places. [2024-11-19 09:55:08,914 INFO L231 Difference]: Finished difference. Result has 180 places, 194 transitions, 3158 flow [2024-11-19 09:55:08,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3158, PETRI_PLACES=180, PETRI_TRANSITIONS=194} [2024-11-19 09:55:08,915 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 158 predicate places. [2024-11-19 09:55:08,915 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 194 transitions, 3158 flow [2024-11-19 09:55:08,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:08,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:08,915 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:08,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:09,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 09:55:09,116 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:09,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash -364708814, now seen corresponding path program 10 times [2024-11-19 09:55:09,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:09,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290894836] [2024-11-19 09:55:09,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:09,127 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:09,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:09,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:09,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290894836] [2024-11-19 09:55:09,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290894836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:09,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581068747] [2024-11-19 09:55:09,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:09,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:09,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:09,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:09,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:55:09,241 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:09,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:09,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:55:09,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:09,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:09,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581068747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:09,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:09,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 15 [2024-11-19 09:55:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123533384] [2024-11-19 09:55:09,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:09,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:55:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:55:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:55:09,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:09,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 194 transitions, 3158 flow. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:09,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:09,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:09,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:09,855 INFO L124 PetriNetUnfolderBase]: 469/905 cut-off events. [2024-11-19 09:55:09,855 INFO L125 PetriNetUnfolderBase]: For 12367/12367 co-relation queries the response was YES. [2024-11-19 09:55:09,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 905 events. 469/905 cut-off events. For 12367/12367 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4647 event pairs, 4 based on Foata normal form. 53/957 useless extension candidates. Maximal degree in co-relation 6859. Up to 375 conditions per place. [2024-11-19 09:55:09,864 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 154 selfloop transitions, 125 changer transitions 20/302 dead transitions. [2024-11-19 09:55:09,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 302 transitions, 5269 flow [2024-11-19 09:55:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:55:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:55:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 208 transitions. [2024-11-19 09:55:09,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-11-19 09:55:09,866 INFO L175 Difference]: Start difference. First operand has 180 places, 194 transitions, 3158 flow. Second operand 19 states and 208 transitions. [2024-11-19 09:55:09,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 302 transitions, 5269 flow [2024-11-19 09:55:09,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 302 transitions, 4916 flow, removed 102 selfloop flow, removed 18 redundant places. [2024-11-19 09:55:09,910 INFO L231 Difference]: Finished difference. Result has 181 places, 251 transitions, 4222 flow [2024-11-19 09:55:09,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4222, PETRI_PLACES=181, PETRI_TRANSITIONS=251} [2024-11-19 09:55:09,910 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 159 predicate places. [2024-11-19 09:55:09,911 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 251 transitions, 4222 flow [2024-11-19 09:55:09,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:09,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:09,911 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:10,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 09:55:10,112 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:10,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1924578681, now seen corresponding path program 11 times [2024-11-19 09:55:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35469115] [2024-11-19 09:55:10,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:10,116 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:55:10,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35469115] [2024-11-19 09:55:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35469115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296777857] [2024-11-19 09:55:10,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:10,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:10,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:10,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:10,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:55:10,187 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:55:10,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:10,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:10,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:10,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:10,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296777857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:10,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:10,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 09:55:10,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656702728] [2024-11-19 09:55:10,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:10,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:55:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:55:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:55:10,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:10,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 251 transitions, 4222 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:10,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:10,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:10,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:10,644 INFO L124 PetriNetUnfolderBase]: 587/1130 cut-off events. [2024-11-19 09:55:10,645 INFO L125 PetriNetUnfolderBase]: For 18030/18030 co-relation queries the response was YES. [2024-11-19 09:55:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 1130 events. 587/1130 cut-off events. For 18030/18030 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6111 event pairs, 1 based on Foata normal form. 4/1133 useless extension candidates. Maximal degree in co-relation 9164. Up to 289 conditions per place. [2024-11-19 09:55:10,654 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 135 selfloop transitions, 253 changer transitions 0/391 dead transitions. [2024-11-19 09:55:10,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 391 transitions, 7164 flow [2024-11-19 09:55:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:55:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:55:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 208 transitions. [2024-11-19 09:55:10,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-11-19 09:55:10,655 INFO L175 Difference]: Start difference. First operand has 181 places, 251 transitions, 4222 flow. Second operand 19 states and 208 transitions. [2024-11-19 09:55:10,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 391 transitions, 7164 flow [2024-11-19 09:55:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 391 transitions, 6389 flow, removed 339 selfloop flow, removed 7 redundant places. [2024-11-19 09:55:10,720 INFO L231 Difference]: Finished difference. Result has 196 places, 338 transitions, 6173 flow [2024-11-19 09:55:10,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6173, PETRI_PLACES=196, PETRI_TRANSITIONS=338} [2024-11-19 09:55:10,720 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 174 predicate places. [2024-11-19 09:55:10,721 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 338 transitions, 6173 flow [2024-11-19 09:55:10,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:10,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:10,721 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:10,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 09:55:10,923 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,SelfDestructingSolverStorable15 [2024-11-19 09:55:10,924 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:10,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 895366267, now seen corresponding path program 12 times [2024-11-19 09:55:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:10,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288035814] [2024-11-19 09:55:10,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:10,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:10,929 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:55:10,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288035814] [2024-11-19 09:55:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288035814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059805945] [2024-11-19 09:55:10,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:10,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:10,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:10,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:10,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 09:55:10,999 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:55:10,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:11,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:11,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:11,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059805945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:11,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:11,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 09:55:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357073159] [2024-11-19 09:55:11,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:11,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:55:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:55:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:55:11,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:11,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 338 transitions, 6173 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:11,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:11,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:11,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:11,509 INFO L124 PetriNetUnfolderBase]: 641/1232 cut-off events. [2024-11-19 09:55:11,509 INFO L125 PetriNetUnfolderBase]: For 26554/26554 co-relation queries the response was YES. [2024-11-19 09:55:11,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10717 conditions, 1232 events. 641/1232 cut-off events. For 26554/26554 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6813 event pairs, 0 based on Foata normal form. 14/1245 useless extension candidates. Maximal degree in co-relation 10647. Up to 285 conditions per place. [2024-11-19 09:55:11,520 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 164 selfloop transitions, 248 changer transitions 1/416 dead transitions. [2024-11-19 09:55:11,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 416 transitions, 8291 flow [2024-11-19 09:55:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 09:55:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 09:55:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 222 transitions. [2024-11-19 09:55:11,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-19 09:55:11,521 INFO L175 Difference]: Start difference. First operand has 196 places, 338 transitions, 6173 flow. Second operand 21 states and 222 transitions. [2024-11-19 09:55:11,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 416 transitions, 8291 flow [2024-11-19 09:55:11,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 416 transitions, 7641 flow, removed 293 selfloop flow, removed 6 redundant places. [2024-11-19 09:55:11,626 INFO L231 Difference]: Finished difference. Result has 213 places, 369 transitions, 7091 flow [2024-11-19 09:55:11,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5700, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7091, PETRI_PLACES=213, PETRI_TRANSITIONS=369} [2024-11-19 09:55:11,627 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 191 predicate places. [2024-11-19 09:55:11,627 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 369 transitions, 7091 flow [2024-11-19 09:55:11,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:11,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:11,627 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:11,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:11,827 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,SelfDestructingSolverStorable16 [2024-11-19 09:55:11,828 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:11,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash 45019448, now seen corresponding path program 13 times [2024-11-19 09:55:11,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:11,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782569303] [2024-11-19 09:55:11,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:11,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:11,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782569303] [2024-11-19 09:55:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782569303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623119167] [2024-11-19 09:55:11,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:11,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:11,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:11,877 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:11,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 09:55:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:11,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:11,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:11,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:12,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623119167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:12,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:12,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-19 09:55:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52968673] [2024-11-19 09:55:12,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:12,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:55:12,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:55:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:55:12,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:12,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 369 transitions, 7091 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:12,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:12,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:12,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:12,364 INFO L124 PetriNetUnfolderBase]: 665/1271 cut-off events. [2024-11-19 09:55:12,364 INFO L125 PetriNetUnfolderBase]: For 21431/21431 co-relation queries the response was YES. [2024-11-19 09:55:12,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11021 conditions, 1271 events. 665/1271 cut-off events. For 21431/21431 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7064 event pairs, 1 based on Foata normal form. 25/1295 useless extension candidates. Maximal degree in co-relation 10950. Up to 688 conditions per place. [2024-11-19 09:55:12,374 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 252 selfloop transitions, 146 changer transitions 7/408 dead transitions. [2024-11-19 09:55:12,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 408 transitions, 8155 flow [2024-11-19 09:55:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 09:55:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 09:55:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 148 transitions. [2024-11-19 09:55:12,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-19 09:55:12,375 INFO L175 Difference]: Start difference. First operand has 213 places, 369 transitions, 7091 flow. Second operand 14 states and 148 transitions. [2024-11-19 09:55:12,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 408 transitions, 8155 flow [2024-11-19 09:55:12,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 408 transitions, 7769 flow, removed 106 selfloop flow, removed 12 redundant places. [2024-11-19 09:55:12,469 INFO L231 Difference]: Finished difference. Result has 214 places, 381 transitions, 7188 flow [2024-11-19 09:55:12,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6581, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7188, PETRI_PLACES=214, PETRI_TRANSITIONS=381} [2024-11-19 09:55:12,469 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 192 predicate places. [2024-11-19 09:55:12,469 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 381 transitions, 7188 flow [2024-11-19 09:55:12,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:12,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:12,469 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:12,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:12,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:12,671 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:12,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1542908506, now seen corresponding path program 14 times [2024-11-19 09:55:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510187083] [2024-11-19 09:55:12,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:12,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:12,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:12,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:12,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510187083] [2024-11-19 09:55:12,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510187083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:12,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191464050] [2024-11-19 09:55:12,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:12,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:12,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:12,721 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:12,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 09:55:12,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:12,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:12,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:12,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:12,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191464050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:12,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:12,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-19 09:55:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315519970] [2024-11-19 09:55:12,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:12,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:55:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:55:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:55:12,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:12,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 381 transitions, 7188 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:12,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:12,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:12,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:13,132 INFO L124 PetriNetUnfolderBase]: 693/1355 cut-off events. [2024-11-19 09:55:13,132 INFO L125 PetriNetUnfolderBase]: For 25089/25089 co-relation queries the response was YES. [2024-11-19 09:55:13,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 1355 events. 693/1355 cut-off events. For 25089/25089 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7779 event pairs, 1 based on Foata normal form. 8/1362 useless extension candidates. Maximal degree in co-relation 11775. Up to 570 conditions per place. [2024-11-19 09:55:13,142 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 241 selfloop transitions, 182 changer transitions 7/433 dead transitions. [2024-11-19 09:55:13,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 433 transitions, 8948 flow [2024-11-19 09:55:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 09:55:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 09:55:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-11-19 09:55:13,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-19 09:55:13,143 INFO L175 Difference]: Start difference. First operand has 214 places, 381 transitions, 7188 flow. Second operand 14 states and 147 transitions. [2024-11-19 09:55:13,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 433 transitions, 8948 flow [2024-11-19 09:55:13,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 433 transitions, 8729 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-19 09:55:13,244 INFO L231 Difference]: Finished difference. Result has 223 places, 398 transitions, 8178 flow [2024-11-19 09:55:13,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6960, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8178, PETRI_PLACES=223, PETRI_TRANSITIONS=398} [2024-11-19 09:55:13,245 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 201 predicate places. [2024-11-19 09:55:13,245 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 398 transitions, 8178 flow [2024-11-19 09:55:13,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:13,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:13,245 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:13,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:13,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:13,446 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:13,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1018848934, now seen corresponding path program 15 times [2024-11-19 09:55:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:13,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055752618] [2024-11-19 09:55:13,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:13,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:13,451 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:55:13,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:55:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055752618] [2024-11-19 09:55:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055752618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757535688] [2024-11-19 09:55:13,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:13,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:13,500 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:13,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 09:55:13,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:55:13,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:13,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:13,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:55:13,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:55:13,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757535688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:13,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:55:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-19 09:55:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609333320] [2024-11-19 09:55:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:13,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:55:13,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:55:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:55:13,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:13,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 398 transitions, 8178 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:13,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:13,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:13,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:13,871 INFO L124 PetriNetUnfolderBase]: 722/1488 cut-off events. [2024-11-19 09:55:13,871 INFO L125 PetriNetUnfolderBase]: For 30140/30146 co-relation queries the response was YES. [2024-11-19 09:55:13,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13284 conditions, 1488 events. 722/1488 cut-off events. For 30140/30146 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9357 event pairs, 9 based on Foata normal form. 28/1514 useless extension candidates. Maximal degree in co-relation 13215. Up to 778 conditions per place. [2024-11-19 09:55:13,882 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 282 selfloop transitions, 31 changer transitions 137/453 dead transitions. [2024-11-19 09:55:13,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 453 transitions, 9966 flow [2024-11-19 09:55:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:55:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:55:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-11-19 09:55:13,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-19 09:55:13,883 INFO L175 Difference]: Start difference. First operand has 223 places, 398 transitions, 8178 flow. Second operand 6 states and 69 transitions. [2024-11-19 09:55:13,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 453 transitions, 9966 flow [2024-11-19 09:55:14,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 453 transitions, 9546 flow, removed 195 selfloop flow, removed 3 redundant places. [2024-11-19 09:55:14,027 INFO L231 Difference]: Finished difference. Result has 229 places, 295 transitions, 5791 flow [2024-11-19 09:55:14,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7800, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5791, PETRI_PLACES=229, PETRI_TRANSITIONS=295} [2024-11-19 09:55:14,027 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 207 predicate places. [2024-11-19 09:55:14,028 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 295 transitions, 5791 flow [2024-11-19 09:55:14,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:14,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:14,028 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:14,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:14,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:14,228 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:14,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1097497174, now seen corresponding path program 16 times [2024-11-19 09:55:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:14,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348175314] [2024-11-19 09:55:14,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:14,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:14,233 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:14,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:14,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:14,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348175314] [2024-11-19 09:55:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348175314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975698027] [2024-11-19 09:55:14,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:14,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:14,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:14,270 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:14,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 09:55:14,312 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:14,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:14,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:14,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:14,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975698027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:14,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 09:55:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865266646] [2024-11-19 09:55:14,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:14,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:55:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:55:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:55:14,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:14,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 295 transitions, 5791 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:14,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:14,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:14,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:14,718 INFO L124 PetriNetUnfolderBase]: 509/1003 cut-off events. [2024-11-19 09:55:14,718 INFO L125 PetriNetUnfolderBase]: For 12790/12790 co-relation queries the response was YES. [2024-11-19 09:55:14,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8662 conditions, 1003 events. 509/1003 cut-off events. For 12790/12790 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5354 event pairs, 13 based on Foata normal form. 3/1005 useless extension candidates. Maximal degree in co-relation 8589. Up to 341 conditions per place. [2024-11-19 09:55:14,728 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 158 selfloop transitions, 170 changer transitions 0/331 dead transitions. [2024-11-19 09:55:14,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 331 transitions, 6703 flow [2024-11-19 09:55:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 09:55:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 09:55:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-19 09:55:14,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-11-19 09:55:14,729 INFO L175 Difference]: Start difference. First operand has 229 places, 295 transitions, 5791 flow. Second operand 15 states and 159 transitions. [2024-11-19 09:55:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 331 transitions, 6703 flow [2024-11-19 09:55:14,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 331 transitions, 6325 flow, removed 84 selfloop flow, removed 17 redundant places. [2024-11-19 09:55:14,807 INFO L231 Difference]: Finished difference. Result has 219 places, 297 transitions, 5920 flow [2024-11-19 09:55:14,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5920, PETRI_PLACES=219, PETRI_TRANSITIONS=297} [2024-11-19 09:55:14,808 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 197 predicate places. [2024-11-19 09:55:14,808 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 297 transitions, 5920 flow [2024-11-19 09:55:14,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:14,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:14,808 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:14,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 09:55:15,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:15,013 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:15,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1961431974, now seen corresponding path program 17 times [2024-11-19 09:55:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:15,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214264741] [2024-11-19 09:55:15,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:15,019 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:55:15,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:15,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:15,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214264741] [2024-11-19 09:55:15,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214264741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:15,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841201403] [2024-11-19 09:55:15,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:15,061 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:15,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 09:55:15,097 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:55:15,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:15,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:15,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:15,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841201403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:15,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 09:55:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206227283] [2024-11-19 09:55:15,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:15,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:55:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:55:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:55:15,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:15,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 297 transitions, 5920 flow. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:15,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:15,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:15,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:15,373 INFO L124 PetriNetUnfolderBase]: 505/991 cut-off events. [2024-11-19 09:55:15,373 INFO L125 PetriNetUnfolderBase]: For 9688/9688 co-relation queries the response was YES. [2024-11-19 09:55:15,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8517 conditions, 991 events. 505/991 cut-off events. For 9688/9688 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5243 event pairs, 13 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 8453. Up to 341 conditions per place. [2024-11-19 09:55:15,380 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 160 selfloop transitions, 154 changer transitions 5/322 dead transitions. [2024-11-19 09:55:15,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 322 transitions, 6703 flow [2024-11-19 09:55:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:55:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:55:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-11-19 09:55:15,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-19 09:55:15,381 INFO L175 Difference]: Start difference. First operand has 219 places, 297 transitions, 5920 flow. Second operand 12 states and 124 transitions. [2024-11-19 09:55:15,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 322 transitions, 6703 flow [2024-11-19 09:55:15,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 6449 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-11-19 09:55:15,452 INFO L231 Difference]: Finished difference. Result has 221 places, 294 transitions, 5922 flow [2024-11-19 09:55:15,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5922, PETRI_PLACES=221, PETRI_TRANSITIONS=294} [2024-11-19 09:55:15,452 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 199 predicate places. [2024-11-19 09:55:15,453 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 294 transitions, 5922 flow [2024-11-19 09:55:15,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:15,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:15,453 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:15,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:15,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:15,654 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:15,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1592140175, now seen corresponding path program 18 times [2024-11-19 09:55:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:15,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419207158] [2024-11-19 09:55:15,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:15,663 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:55:15,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 09:55:15,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419207158] [2024-11-19 09:55:15,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419207158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:15,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465544546] [2024-11-19 09:55:15,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:15,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:15,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:15,714 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:55:15,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 09:55:15,752 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:55:15,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:15,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:55:15,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:15,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:15,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465544546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:15,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:15,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 16 [2024-11-19 09:55:15,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149270881] [2024-11-19 09:55:15,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:15,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:55:15,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:15,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:55:15,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:55:15,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:15,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 294 transitions, 5922 flow. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:15,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:15,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:15,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:16,248 INFO L124 PetriNetUnfolderBase]: 623/1216 cut-off events. [2024-11-19 09:55:16,248 INFO L125 PetriNetUnfolderBase]: For 15357/15357 co-relation queries the response was YES. [2024-11-19 09:55:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10729 conditions, 1216 events. 623/1216 cut-off events. For 15357/15357 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6756 event pairs, 1 based on Foata normal form. 11/1226 useless extension candidates. Maximal degree in co-relation 10665. Up to 747 conditions per place. [2024-11-19 09:55:16,256 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 270 selfloop transitions, 112 changer transitions 8/393 dead transitions. [2024-11-19 09:55:16,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 393 transitions, 8289 flow [2024-11-19 09:55:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:55:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:55:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-11-19 09:55:16,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:55:16,257 INFO L175 Difference]: Start difference. First operand has 221 places, 294 transitions, 5922 flow. Second operand 12 states and 144 transitions. [2024-11-19 09:55:16,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 393 transitions, 8289 flow [2024-11-19 09:55:16,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 393 transitions, 8011 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-19 09:55:16,325 INFO L231 Difference]: Finished difference. Result has 230 places, 348 transitions, 7219 flow [2024-11-19 09:55:16,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7219, PETRI_PLACES=230, PETRI_TRANSITIONS=348} [2024-11-19 09:55:16,325 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 208 predicate places. [2024-11-19 09:55:16,325 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 348 transitions, 7219 flow [2024-11-19 09:55:16,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:16,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:16,326 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:16,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:16,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:16,526 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:16,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1425288971, now seen corresponding path program 19 times [2024-11-19 09:55:16,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:16,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672567787] [2024-11-19 09:55:16,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:16,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672567787] [2024-11-19 09:55:16,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672567787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33179796] [2024-11-19 09:55:16,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:16,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:16,608 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) [2024-11-19 09:55:16,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 09:55:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:16,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:55:16,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:16,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33179796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:16,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-19 09:55:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591415733] [2024-11-19 09:55:16,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:16,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 09:55:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:16,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 09:55:16,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-19 09:55:16,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:16,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 348 transitions, 7219 flow. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:16,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:16,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:16,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:17,568 INFO L124 PetriNetUnfolderBase]: 786/1557 cut-off events. [2024-11-19 09:55:17,569 INFO L125 PetriNetUnfolderBase]: For 25624/25624 co-relation queries the response was YES. [2024-11-19 09:55:17,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14318 conditions, 1557 events. 786/1557 cut-off events. For 25624/25624 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9292 event pairs, 28 based on Foata normal form. 19/1575 useless extension candidates. Maximal degree in co-relation 14248. Up to 658 conditions per place. [2024-11-19 09:55:17,579 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 275 selfloop transitions, 197 changer transitions 26/501 dead transitions. [2024-11-19 09:55:17,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 501 transitions, 11028 flow [2024-11-19 09:55:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 09:55:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 09:55:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 258 transitions. [2024-11-19 09:55:17,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-11-19 09:55:17,581 INFO L175 Difference]: Start difference. First operand has 230 places, 348 transitions, 7219 flow. Second operand 25 states and 258 transitions. [2024-11-19 09:55:17,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 501 transitions, 11028 flow [2024-11-19 09:55:17,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 501 transitions, 10939 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-11-19 09:55:17,684 INFO L231 Difference]: Finished difference. Result has 262 places, 424 transitions, 9526 flow [2024-11-19 09:55:17,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7130, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9526, PETRI_PLACES=262, PETRI_TRANSITIONS=424} [2024-11-19 09:55:17,685 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 240 predicate places. [2024-11-19 09:55:17,685 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 424 transitions, 9526 flow [2024-11-19 09:55:17,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:17,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:17,685 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:17,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 09:55:17,886 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,SelfDestructingSolverStorable23 [2024-11-19 09:55:17,887 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:55:17,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash 804759115, now seen corresponding path program 20 times [2024-11-19 09:55:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742078173] [2024-11-19 09:55:17,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:17,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:17,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742078173] [2024-11-19 09:55:17,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742078173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444635503] [2024-11-19 09:55:17,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:17,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:17,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:17,973 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) [2024-11-19 09:55:17,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 09:55:18,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:18,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:18,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:55:18,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:18,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444635503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:18,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:18,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2024-11-19 09:55:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255169096] [2024-11-19 09:55:18,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:18,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 09:55:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 09:55:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2024-11-19 09:55:18,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:18,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 424 transitions, 9526 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:18,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:18,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:18,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:18,667 INFO L124 PetriNetUnfolderBase]: 811/1585 cut-off events. [2024-11-19 09:55:18,667 INFO L125 PetriNetUnfolderBase]: For 25343/25343 co-relation queries the response was YES. [2024-11-19 09:55:18,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15303 conditions, 1585 events. 811/1585 cut-off events. For 25343/25343 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9336 event pairs, 4 based on Foata normal form. 19/1603 useless extension candidates. Maximal degree in co-relation 15223. Up to 790 conditions per place. [2024-11-19 09:55:18,679 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 289 selfloop transitions, 193 changer transitions 15/500 dead transitions. [2024-11-19 09:55:18,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 500 transitions, 11581 flow [2024-11-19 09:55:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:55:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:55:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 208 transitions. [2024-11-19 09:55:18,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-11-19 09:55:18,680 INFO L175 Difference]: Start difference. First operand has 262 places, 424 transitions, 9526 flow. Second operand 20 states and 208 transitions. [2024-11-19 09:55:18,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 500 transitions, 11581 flow [2024-11-19 09:55:18,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 500 transitions, 10728 flow, removed 388 selfloop flow, removed 9 redundant places. [2024-11-19 09:55:18,796 INFO L231 Difference]: Finished difference. Result has 275 places, 451 transitions, 10030 flow [2024-11-19 09:55:18,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8563, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10030, PETRI_PLACES=275, PETRI_TRANSITIONS=451} [2024-11-19 09:55:18,797 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 253 predicate places. [2024-11-19 09:55:18,797 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 451 transitions, 10030 flow [2024-11-19 09:55:18,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:18,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:18,797 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:18,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:18,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 09:55:18,998 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)] === [2024-11-19 09:55:18,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:18,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1887765949, now seen corresponding path program 21 times [2024-11-19 09:55:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:18,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857987340] [2024-11-19 09:55:18,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:18,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:19,003 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:55:19,003 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:55:19,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857987340] [2024-11-19 09:55:19,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857987340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:19,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108324389] [2024-11-19 09:55:19,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:19,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:19,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:19,046 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) [2024-11-19 09:55:19,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 09:55:19,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:55:19,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:19,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:19,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:55:19,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:55:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108324389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:55:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-19 09:55:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872964398] [2024-11-19 09:55:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:55:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:55:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:55:19,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:19,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 451 transitions, 10030 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:19,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:19,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:19,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:19,410 INFO L124 PetriNetUnfolderBase]: 828/1585 cut-off events. [2024-11-19 09:55:19,410 INFO L125 PetriNetUnfolderBase]: For 28497/28497 co-relation queries the response was YES. [2024-11-19 09:55:19,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15704 conditions, 1585 events. 828/1585 cut-off events. For 28497/28497 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9275 event pairs, 6 based on Foata normal form. 18/1602 useless extension candidates. Maximal degree in co-relation 15619. Up to 1164 conditions per place. [2024-11-19 09:55:19,421 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 72 selfloop transitions, 12 changer transitions 397/484 dead transitions. [2024-11-19 09:55:19,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 484 transitions, 11573 flow [2024-11-19 09:55:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:55:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:55:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-19 09:55:19,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-19 09:55:19,423 INFO L175 Difference]: Start difference. First operand has 275 places, 451 transitions, 10030 flow. Second operand 6 states and 68 transitions. [2024-11-19 09:55:19,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 484 transitions, 11573 flow [2024-11-19 09:55:19,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 484 transitions, 11275 flow, removed 128 selfloop flow, removed 7 redundant places. [2024-11-19 09:55:19,565 INFO L231 Difference]: Finished difference. Result has 271 places, 77 transitions, 1537 flow [2024-11-19 09:55:19,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9774, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1537, PETRI_PLACES=271, PETRI_TRANSITIONS=77} [2024-11-19 09:55:19,566 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 249 predicate places. [2024-11-19 09:55:19,566 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 77 transitions, 1537 flow [2024-11-19 09:55:19,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:19,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:19,566 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:19,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:19,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 09:55:19,767 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)] === [2024-11-19 09:55:19,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -222912579, now seen corresponding path program 22 times [2024-11-19 09:55:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650912620] [2024-11-19 09:55:19,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:19,772 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:19,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:19,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650912620] [2024-11-19 09:55:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650912620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915829513] [2024-11-19 09:55:19,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:19,825 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) [2024-11-19 09:55:19,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 09:55:19,864 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:19,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:19,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:55:19,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:19,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915829513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:20,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2024-11-19 09:55:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980085952] [2024-11-19 09:55:20,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:20,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 09:55:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 09:55:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-19 09:55:20,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:20,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 77 transitions, 1537 flow. Second operand has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:20,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:20,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:20,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:20,379 INFO L124 PetriNetUnfolderBase]: 122/335 cut-off events. [2024-11-19 09:55:20,379 INFO L125 PetriNetUnfolderBase]: For 11685/11685 co-relation queries the response was YES. [2024-11-19 09:55:20,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 335 events. 122/335 cut-off events. For 11685/11685 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1554 event pairs, 1 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 3091. Up to 215 conditions per place. [2024-11-19 09:55:20,381 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 69 selfloop transitions, 29 changer transitions 7/108 dead transitions. [2024-11-19 09:55:20,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 108 transitions, 2116 flow [2024-11-19 09:55:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 09:55:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 09:55:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 144 transitions. [2024-11-19 09:55:20,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-19 09:55:20,382 INFO L175 Difference]: Start difference. First operand has 271 places, 77 transitions, 1537 flow. Second operand 15 states and 144 transitions. [2024-11-19 09:55:20,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 108 transitions, 2116 flow [2024-11-19 09:55:20,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 108 transitions, 1320 flow, removed 144 selfloop flow, removed 89 redundant places. [2024-11-19 09:55:20,400 INFO L231 Difference]: Finished difference. Result has 148 places, 83 transitions, 1029 flow [2024-11-19 09:55:20,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1029, PETRI_PLACES=148, PETRI_TRANSITIONS=83} [2024-11-19 09:55:20,401 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 126 predicate places. [2024-11-19 09:55:20,401 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 83 transitions, 1029 flow [2024-11-19 09:55:20,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:20,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:20,401 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:20,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-19 09:55:20,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:20,606 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)] === [2024-11-19 09:55:20,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2075685021, now seen corresponding path program 23 times [2024-11-19 09:55:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650726084] [2024-11-19 09:55:20,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:20,610 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 09:55:20,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:20,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650726084] [2024-11-19 09:55:20,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650726084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476433400] [2024-11-19 09:55:20,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:20,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:20,672 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) [2024-11-19 09:55:20,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-19 09:55:20,712 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 09:55:20,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:20,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:55:20,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:20,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476433400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:20,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:20,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-19 09:55:20,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864058390] [2024-11-19 09:55:20,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:20,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 09:55:20,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:20,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 09:55:20,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2024-11-19 09:55:20,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:20,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 83 transitions, 1029 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:20,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:20,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:21,008 INFO L124 PetriNetUnfolderBase]: 109/294 cut-off events. [2024-11-19 09:55:21,008 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2024-11-19 09:55:21,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 294 events. 109/294 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1285 event pairs, 1 based on Foata normal form. 4/297 useless extension candidates. Maximal degree in co-relation 1825. Up to 152 conditions per place. [2024-11-19 09:55:21,009 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 68 selfloop transitions, 24 changer transitions 7/102 dead transitions. [2024-11-19 09:55:21,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 102 transitions, 1332 flow [2024-11-19 09:55:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:55:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:55:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-11-19 09:55:21,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-11-19 09:55:21,010 INFO L175 Difference]: Start difference. First operand has 148 places, 83 transitions, 1029 flow. Second operand 12 states and 119 transitions. [2024-11-19 09:55:21,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 102 transitions, 1332 flow [2024-11-19 09:55:21,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 102 transitions, 1254 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-11-19 09:55:21,016 INFO L231 Difference]: Finished difference. Result has 150 places, 80 transitions, 977 flow [2024-11-19 09:55:21,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=977, PETRI_PLACES=150, PETRI_TRANSITIONS=80} [2024-11-19 09:55:21,017 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 128 predicate places. [2024-11-19 09:55:21,017 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 80 transitions, 977 flow [2024-11-19 09:55:21,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:21,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:21,017 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:21,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-19 09:55:21,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 09:55:21,218 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)] === [2024-11-19 09:55:21,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2022935189, now seen corresponding path program 24 times [2024-11-19 09:55:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581268055] [2024-11-19 09:55:21,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:21,224 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:55:21,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:21,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581268055] [2024-11-19 09:55:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581268055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338425074] [2024-11-19 09:55:21,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:55:21,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:21,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:21,281 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) [2024-11-19 09:55:21,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-19 09:55:21,316 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 09:55:21,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:21,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:55:21,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:21,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:21,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338425074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:21,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:21,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-11-19 09:55:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208973843] [2024-11-19 09:55:21,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:21,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 09:55:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 09:55:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2024-11-19 09:55:21,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:21,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 80 transitions, 977 flow. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:21,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:21,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:21,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:21,523 INFO L124 PetriNetUnfolderBase]: 105/282 cut-off events. [2024-11-19 09:55:21,523 INFO L125 PetriNetUnfolderBase]: For 2021/2021 co-relation queries the response was YES. [2024-11-19 09:55:21,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 282 events. 105/282 cut-off events. For 2021/2021 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1194 event pairs, 1 based on Foata normal form. 4/285 useless extension candidates. Maximal degree in co-relation 1667. Up to 126 conditions per place. [2024-11-19 09:55:21,524 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 56 selfloop transitions, 27 changer transitions 9/95 dead transitions. [2024-11-19 09:55:21,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 95 transitions, 1226 flow [2024-11-19 09:55:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:55:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:55:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 117 transitions. [2024-11-19 09:55:21,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-19 09:55:21,525 INFO L175 Difference]: Start difference. First operand has 150 places, 80 transitions, 977 flow. Second operand 13 states and 117 transitions. [2024-11-19 09:55:21,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 95 transitions, 1226 flow [2024-11-19 09:55:21,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 95 transitions, 1167 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-19 09:55:21,531 INFO L231 Difference]: Finished difference. Result has 155 places, 76 transitions, 945 flow [2024-11-19 09:55:21,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=945, PETRI_PLACES=155, PETRI_TRANSITIONS=76} [2024-11-19 09:55:21,532 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 133 predicate places. [2024-11-19 09:55:21,532 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 76 transitions, 945 flow [2024-11-19 09:55:21,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:21,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:21,533 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:21,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-19 09:55:21,733 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,SelfDestructingSolverStorable28 [2024-11-19 09:55:21,733 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)] === [2024-11-19 09:55:21,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:21,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1345518917, now seen corresponding path program 25 times [2024-11-19 09:55:21,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:21,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954336985] [2024-11-19 09:55:21,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:21,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954336985] [2024-11-19 09:55:21,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954336985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:21,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848788979] [2024-11-19 09:55:21,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:55:21,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:21,788 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) [2024-11-19 09:55:21,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-19 09:55:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:55:21,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:55:21,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:21,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848788979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:21,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-19 09:55:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035210729] [2024-11-19 09:55:21,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:21,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 09:55:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 09:55:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-19 09:55:21,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:21,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 76 transitions, 945 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:21,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:21,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:21,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:22,124 INFO L124 PetriNetUnfolderBase]: 103/281 cut-off events. [2024-11-19 09:55:22,124 INFO L125 PetriNetUnfolderBase]: For 2579/2579 co-relation queries the response was YES. [2024-11-19 09:55:22,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 281 events. 103/281 cut-off events. For 2579/2579 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1163 event pairs, 1 based on Foata normal form. 3/283 useless extension candidates. Maximal degree in co-relation 1699. Up to 98 conditions per place. [2024-11-19 09:55:22,126 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 63 selfloop transitions, 35 changer transitions 3/104 dead transitions. [2024-11-19 09:55:22,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 104 transitions, 1265 flow [2024-11-19 09:55:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 09:55:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 09:55:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 163 transitions. [2024-11-19 09:55:22,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47941176470588237 [2024-11-19 09:55:22,128 INFO L175 Difference]: Start difference. First operand has 155 places, 76 transitions, 945 flow. Second operand 17 states and 163 transitions. [2024-11-19 09:55:22,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 104 transitions, 1265 flow [2024-11-19 09:55:22,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 104 transitions, 1192 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-19 09:55:22,138 INFO L231 Difference]: Finished difference. Result has 156 places, 76 transitions, 980 flow [2024-11-19 09:55:22,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=980, PETRI_PLACES=156, PETRI_TRANSITIONS=76} [2024-11-19 09:55:22,138 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 134 predicate places. [2024-11-19 09:55:22,138 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 76 transitions, 980 flow [2024-11-19 09:55:22,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:22,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:22,139 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:22,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:22,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:22,339 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)] === [2024-11-19 09:55:22,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1575227329, now seen corresponding path program 26 times [2024-11-19 09:55:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:22,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071652193] [2024-11-19 09:55:22,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:22,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:22,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:22,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071652193] [2024-11-19 09:55:22,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071652193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:22,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055947274] [2024-11-19 09:55:22,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:55:22,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:22,410 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) [2024-11-19 09:55:22,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-19 09:55:22,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:55:22,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:22,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:55:22,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:22,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055947274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:22,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 09:55:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265224266] [2024-11-19 09:55:22,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:22,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:55:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:55:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:55:22,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:22,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 76 transitions, 980 flow. Second operand has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:22,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:22,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:22,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:22,681 INFO L124 PetriNetUnfolderBase]: 92/251 cut-off events. [2024-11-19 09:55:22,681 INFO L125 PetriNetUnfolderBase]: For 1902/1902 co-relation queries the response was YES. [2024-11-19 09:55:22,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 251 events. 92/251 cut-off events. For 1902/1902 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 992 event pairs, 1 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 1542. Up to 98 conditions per place. [2024-11-19 09:55:22,683 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 47 selfloop transitions, 28 changer transitions 8/86 dead transitions. [2024-11-19 09:55:22,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 86 transitions, 1135 flow [2024-11-19 09:55:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:55:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:55:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-11-19 09:55:22,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-11-19 09:55:22,684 INFO L175 Difference]: Start difference. First operand has 156 places, 76 transitions, 980 flow. Second operand 12 states and 109 transitions. [2024-11-19 09:55:22,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 86 transitions, 1135 flow [2024-11-19 09:55:22,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 86 transitions, 1056 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-11-19 09:55:22,690 INFO L231 Difference]: Finished difference. Result has 153 places, 70 transitions, 872 flow [2024-11-19 09:55:22,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=872, PETRI_PLACES=153, PETRI_TRANSITIONS=70} [2024-11-19 09:55:22,691 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 131 predicate places. [2024-11-19 09:55:22,691 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 70 transitions, 872 flow [2024-11-19 09:55:22,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:22,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:22,691 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:22,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:22,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:22,892 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)] === [2024-11-19 09:55:22,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1597596762, now seen corresponding path program 27 times [2024-11-19 09:55:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:22,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186640486] [2024-11-19 09:55:22,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:22,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 09:55:22,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 09:55:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186640486] [2024-11-19 09:55:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186640486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590129378] [2024-11-19 09:55:22,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:55:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:22,955 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) [2024-11-19 09:55:22,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-19 09:55:22,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 09:55:22,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:22,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:55:22,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 09:55:23,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:55:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590129378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:55:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:55:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-19 09:55:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940881393] [2024-11-19 09:55:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:55:23,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:55:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:55:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:55:23,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:23,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 70 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:23,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:23,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:23,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:23,080 INFO L124 PetriNetUnfolderBase]: 88/228 cut-off events. [2024-11-19 09:55:23,080 INFO L125 PetriNetUnfolderBase]: For 1893/1896 co-relation queries the response was YES. [2024-11-19 09:55:23,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 228 events. 88/228 cut-off events. For 1893/1896 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 864 event pairs, 12 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 1431. Up to 92 conditions per place. [2024-11-19 09:55:23,081 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 2 changer transitions 56/82 dead transitions. [2024-11-19 09:55:23,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 82 transitions, 1140 flow [2024-11-19 09:55:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:55:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:55:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-11-19 09:55:23,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-19 09:55:23,082 INFO L175 Difference]: Start difference. First operand has 153 places, 70 transitions, 872 flow. Second operand 6 states and 61 transitions. [2024-11-19 09:55:23,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 82 transitions, 1140 flow [2024-11-19 09:55:23,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 82 transitions, 1078 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 09:55:23,088 INFO L231 Difference]: Finished difference. Result has 144 places, 23 transitions, 202 flow [2024-11-19 09:55:23,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=144, PETRI_TRANSITIONS=23} [2024-11-19 09:55:23,089 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 122 predicate places. [2024-11-19 09:55:23,089 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 23 transitions, 202 flow [2024-11-19 09:55:23,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:23,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:23,089 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:23,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-19 09:55:23,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:23,290 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)] === [2024-11-19 09:55:23,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1707722210, now seen corresponding path program 28 times [2024-11-19 09:55:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80368593] [2024-11-19 09:55:23,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:23,295 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:23,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80368593] [2024-11-19 09:55:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80368593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754930418] [2024-11-19 09:55:23,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:55:23,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:23,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:23,391 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) [2024-11-19 09:55:23,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-19 09:55:23,428 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:55:23,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:23,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:55:23,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:23,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754930418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:23,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2024-11-19 09:55:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457652524] [2024-11-19 09:55:23,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:23,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 09:55:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 09:55:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2024-11-19 09:55:23,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:23,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 23 transitions, 202 flow. Second operand has 30 states, 30 states have (on average 7.733333333333333) internal successors, (232), 30 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:23,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:23,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:23,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:24,078 INFO L124 PetriNetUnfolderBase]: 32/92 cut-off events. [2024-11-19 09:55:24,078 INFO L125 PetriNetUnfolderBase]: For 1226/1226 co-relation queries the response was YES. [2024-11-19 09:55:24,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 92 events. 32/92 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 196 event pairs, 1 based on Foata normal form. 2/93 useless extension candidates. Maximal degree in co-relation 605. Up to 22 conditions per place. [2024-11-19 09:55:24,079 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 22 selfloop transitions, 12 changer transitions 23/60 dead transitions. [2024-11-19 09:55:24,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 60 transitions, 610 flow [2024-11-19 09:55:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:55:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:55:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 179 transitions. [2024-11-19 09:55:24,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-11-19 09:55:24,080 INFO L175 Difference]: Start difference. First operand has 144 places, 23 transitions, 202 flow. Second operand 20 states and 179 transitions. [2024-11-19 09:55:24,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 60 transitions, 610 flow [2024-11-19 09:55:24,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 60 transitions, 415 flow, removed 32 selfloop flow, removed 36 redundant places. [2024-11-19 09:55:24,082 INFO L231 Difference]: Finished difference. Result has 96 places, 25 transitions, 167 flow [2024-11-19 09:55:24,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=167, PETRI_PLACES=96, PETRI_TRANSITIONS=25} [2024-11-19 09:55:24,082 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2024-11-19 09:55:24,082 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 25 transitions, 167 flow [2024-11-19 09:55:24,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.733333333333333) internal successors, (232), 30 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:24,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:55:24,082 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:55:24,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-19 09:55:24,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:24,286 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)] === [2024-11-19 09:55:24,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:55:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1340748799, now seen corresponding path program 29 times [2024-11-19 09:55:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:55:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064629537] [2024-11-19 09:55:24,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:24,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:55:24,291 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 09:55:24,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 09:55:24,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:55:24,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064629537] [2024-11-19 09:55:24,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064629537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:55:24,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077658916] [2024-11-19 09:55:24,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:55:24,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:55:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:55:24,337 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) [2024-11-19 09:55:24,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-19 09:55:24,373 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 09:55:24,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:55:24,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 09:55:24,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:55:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:55:24,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:55:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:55:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077658916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:55:24,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:55:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 7] total 22 [2024-11-19 09:55:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808555032] [2024-11-19 09:55:24,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:55:24,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 09:55:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:55:24,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 09:55:24,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-11-19 09:55:24,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:55:24,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 25 transitions, 167 flow. Second operand has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:24,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:55:24,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:55:24,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:55:24,746 INFO L124 PetriNetUnfolderBase]: 32/83 cut-off events. [2024-11-19 09:55:24,747 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-19 09:55:24,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 83 events. 32/83 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 1 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 440. Up to 22 conditions per place. [2024-11-19 09:55:24,747 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2024-11-19 09:55:24,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 47 transitions, 411 flow [2024-11-19 09:55:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 09:55:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 09:55:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 131 transitions. [2024-11-19 09:55:24,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-11-19 09:55:24,748 INFO L175 Difference]: Start difference. First operand has 96 places, 25 transitions, 167 flow. Second operand 15 states and 131 transitions. [2024-11-19 09:55:24,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 47 transitions, 411 flow [2024-11-19 09:55:24,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 47 transitions, 349 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-19 09:55:24,749 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2024-11-19 09:55:24,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2024-11-19 09:55:24,749 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 69 predicate places. [2024-11-19 09:55:24,749 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2024-11-19 09:55:24,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:55:24,751 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-19 09:55:24,751 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:55:24,752 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-19 09:55:24,752 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:55:24,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-19 09:55:24,952 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,SelfDestructingSolverStorable33 [2024-11-19 09:55:24,952 INFO L407 BasicCegarLoop]: Path program histogram: [29, 2, 2, 1] [2024-11-19 09:55:24,955 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:55:24,955 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:55:24,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:55:24 BasicIcfg [2024-11-19 09:55:24,958 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:55:24,959 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:55:24,959 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:55:24,959 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:55:24,960 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:55:00" (3/4) ... [2024-11-19 09:55:24,961 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 09:55:24,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 09:55:24,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 09:55:24,969 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-11-19 09:55:24,969 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-19 09:55:24,969 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-19 09:55:24,969 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 09:55:25,038 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 09:55:25,039 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 09:55:25,039 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:55:25,039 INFO L158 Benchmark]: Toolchain (without parser) took 24783.67ms. Allocated memory was 165.7MB in the beginning and 373.3MB in the end (delta: 207.6MB). Free memory was 132.2MB in the beginning and 319.2MB in the end (delta: -187.0MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2024-11-19 09:55:25,039 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 165.7MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:55:25,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.62ms. Allocated memory is still 165.7MB. Free memory was 132.2MB in the beginning and 119.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 09:55:25,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.00ms. Allocated memory is still 165.7MB. Free memory was 119.2MB in the beginning and 117.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:55:25,040 INFO L158 Benchmark]: Boogie Preprocessor took 27.92ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:55:25,040 INFO L158 Benchmark]: RCFGBuilder took 384.39ms. Allocated memory is still 165.7MB. Free memory was 115.7MB in the beginning and 95.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 09:55:25,040 INFO L158 Benchmark]: TraceAbstraction took 24039.38ms. Allocated memory was 165.7MB in the beginning and 373.3MB in the end (delta: 207.6MB). Free memory was 94.7MB in the beginning and 324.4MB in the end (delta: -229.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:55:25,040 INFO L158 Benchmark]: Witness Printer took 79.90ms. Allocated memory is still 373.3MB. Free memory was 324.4MB in the beginning and 319.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 09:55:25,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 165.7MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.62ms. Allocated memory is still 165.7MB. Free memory was 132.2MB in the beginning and 119.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.00ms. Allocated memory is still 165.7MB. Free memory was 119.2MB in the beginning and 117.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.92ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.39ms. Allocated memory is still 165.7MB. Free memory was 115.7MB in the beginning and 95.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 24039.38ms. Allocated memory was 165.7MB in the beginning and 373.3MB in the end (delta: 207.6MB). Free memory was 94.7MB in the beginning and 324.4MB in the end (delta: -229.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 79.90ms. Allocated memory is still 373.3MB. Free memory was 324.4MB in the beginning and 319.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 27 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.0s, OverallIterations: 34, TraceHistogramMax: 5, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1619 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1619 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6621 IncrementalHoareTripleChecker+Invalid, 7081 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 460 mSolverCounterUnsat, 0 mSDtfsCounter, 6621 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1415 GetRequests, 767 SyntacticMatches, 22 SemanticMatches, 626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10030occurred in iteration=25, InterpolantAutomatonStates: 447, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1127 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 1532 ConstructedInterpolants, 0 QuantifiedInterpolants, 7948 SizeOfPredicates, 22 NumberOfNonLiveVariables, 2958 ConjunctsInSsa, 260 ConjunctsInUnsatCore, 91 InterpolantComputations, 8 PerfectInterpolantSequences, 395/868 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 09:55:25,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE