./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:19:34,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:19:34,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:19:34,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:19:34,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:19:34,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:19:34,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:19:34,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:19:34,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:19:34,802 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:19:34,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:19:34,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:19:34,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:19:34,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:19:34,803 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:19:34,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:19:34,804 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:19:34,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:19:34,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:19:34,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:19:34,805 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:19:34,806 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:19:34,806 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:19:34,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:19:34,806 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:19:34,807 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:19:34,807 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:19:34,807 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:19:34,807 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:19:34,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:19:34,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:19:34,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:19:34,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:19:34,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:19:34,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:19:34,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:19:34,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:19:34,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:19:34,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:19:34,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:19:34,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:19:34,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:19:34,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2024-11-22 21:19:35,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:19:35,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:19:35,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:19:35,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:19:35,039 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:19:35,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-22 21:19:36,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:19:36,581 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:19:36,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-22 21:19:36,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd176d83d/e6a3f0a8cbd84999a9fa4115c5f4d386/FLAG1d915520d [2024-11-22 21:19:36,618 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd176d83d/e6a3f0a8cbd84999a9fa4115c5f4d386 [2024-11-22 21:19:36,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:19:36,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:19:36,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:19:36,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:19:36,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:19:36,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:19:36" (1/1) ... [2024-11-22 21:19:36,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599fec9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:36, skipping insertion in model container [2024-11-22 21:19:36,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:19:36" (1/1) ... [2024-11-22 21:19:36,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:19:36,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:19:37,020 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:19:37,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:19:37,106 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:19:37,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37 WrapperNode [2024-11-22 21:19:37,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:19:37,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:19:37,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:19:37,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:19:37,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,142 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-22 21:19:37,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:19:37,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:19:37,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:19:37,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:19:37,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,170 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]. [2024-11-22 21:19:37,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:19:37,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:19:37,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:19:37,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:19:37,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (1/1) ... [2024-11-22 21:19:37,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:19:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:37,228 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) [2024-11-22 21:19:37,236 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 [2024-11-22 21:19:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-22 21:19:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-22 21:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-22 21:19:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-22 21:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:19:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:19:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:19:37,283 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:19:37,370 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:19:37,373 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:19:37,503 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:19:37,504 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:19:37,578 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:19:37,579 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:19:37,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:19:37 BoogieIcfgContainer [2024-11-22 21:19:37,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:19:37,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:19:37,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:19:37,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:19:37,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:19:36" (1/3) ... [2024-11-22 21:19:37,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266348b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:19:37, skipping insertion in model container [2024-11-22 21:19:37,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:37" (2/3) ... [2024-11-22 21:19:37,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266348b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:19:37, skipping insertion in model container [2024-11-22 21:19:37,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:19:37" (3/3) ... [2024-11-22 21:19:37,586 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2024-11-22 21:19:37,599 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:19:37,600 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:19:37,600 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:19:37,636 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:19:37,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-22 21:19:37,693 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-22 21:19:37,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:19:37,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-22 21:19:37,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-22 21:19:37,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-22 21:19:37,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:19:37,709 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;@3c5e08be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:19:37,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 21:19:37,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:19:37,717 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-22 21:19:37,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:19:37,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:37,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:37,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:37,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-11-22 21:19:37,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:37,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754120178] [2024-11-22 21:19:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:37,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754120178] [2024-11-22 21:19:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754120178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:37,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:37,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:19:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483781237] [2024-11-22 21:19:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:37,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:37,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-22 21:19:37,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:37,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:37,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-22 21:19:38,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:38,086 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-11-22 21:19:38,087 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:19:38,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-11-22 21:19:38,089 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-22 21:19:38,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-22 21:19:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-22 21:19:38,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-22 21:19:38,099 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-22 21:19:38,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-22 21:19:38,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:19:38,102 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-22 21:19:38,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-22 21:19:38,105 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-22 21:19:38,105 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-22 21:19:38,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:38,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:38,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:38,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:19:38,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:38,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-11-22 21:19:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:38,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794412946] [2024-11-22 21:19:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:38,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:38,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794412946] [2024-11-22 21:19:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794412946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:38,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:19:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262756333] [2024-11-22 21:19:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:38,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:19:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:38,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:19:38,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:19:38,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:38,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:38,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:38,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:38,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:38,369 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2024-11-22 21:19:38,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:19:38,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1990 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2024-11-22 21:19:38,373 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-11-22 21:19:38,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-11-22 21:19:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:19:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:19:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-11-22 21:19:38,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-22 21:19:38,374 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-11-22 21:19:38,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-11-22 21:19:38,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:38,376 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-11-22 21:19:38,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2024-11-22 21:19:38,377 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-22 21:19:38,377 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-11-22 21:19:38,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:38,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:38,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:38,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:19:38,378 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:38,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-11-22 21:19:38,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:38,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238913850] [2024-11-22 21:19:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:38,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:38,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238913850] [2024-11-22 21:19:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238913850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:19:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006781759] [2024-11-22 21:19:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:38,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:19:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:19:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:19:38,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:38,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:38,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:38,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:38,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:38,697 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2024-11-22 21:19:38,698 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-11-22 21:19:38,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3073 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2024-11-22 21:19:38,705 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-11-22 21:19:38,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-11-22 21:19:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:19:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:19:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-22 21:19:38,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-22 21:19:38,708 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-11-22 21:19:38,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-11-22 21:19:38,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-22 21:19:38,714 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-11-22 21:19:38,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-22 21:19:38,716 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-22 21:19:38,716 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-11-22 21:19:38,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:38,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:38,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:38,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:19:38,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:38,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-11-22 21:19:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:38,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600928222] [2024-11-22 21:19:38,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:19:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:38,735 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:19:38,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600928222] [2024-11-22 21:19:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600928222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:38,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:38,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:19:38,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205112244] [2024-11-22 21:19:38,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:38,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:19:38,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:19:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:19:38,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:38,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:38,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:38,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:38,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:39,016 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-11-22 21:19:39,016 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-22 21:19:39,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2595 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2024-11-22 21:19:39,019 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-11-22 21:19:39,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-11-22 21:19:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:19:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:19:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-22 21:19:39,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-11-22 21:19:39,022 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-11-22 21:19:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-11-22 21:19:39,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 21:19:39,029 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-11-22 21:19:39,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-22 21:19:39,029 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-22 21:19:39,030 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-11-22 21:19:39,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:39,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:39,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:39,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:19:39,030 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:39,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1356857717, now seen corresponding path program 1 times [2024-11-22 21:19:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:39,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115898239] [2024-11-22 21:19:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:39,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115898239] [2024-11-22 21:19:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115898239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:39,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:39,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:19:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512561869] [2024-11-22 21:19:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:39,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:19:39,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:19:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:19:39,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:39,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:39,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:39,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:39,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:39,355 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2024-11-22 21:19:39,356 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-11-22 21:19:39,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 620 events. 337/620 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2632 event pairs, 74 based on Foata normal form. 18/634 useless extension candidates. Maximal degree in co-relation 1923. Up to 237 conditions per place. [2024-11-22 21:19:39,359 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2024-11-22 21:19:39,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2024-11-22 21:19:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:19:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:19:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-11-22 21:19:39,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-11-22 21:19:39,360 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2024-11-22 21:19:39,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2024-11-22 21:19:39,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-22 21:19:39,366 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2024-11-22 21:19:39,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-22 21:19:39,366 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-11-22 21:19:39,366 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2024-11-22 21:19:39,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:39,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:39,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:39,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:19:39,367 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:39,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 2 times [2024-11-22 21:19:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991247990] [2024-11-22 21:19:39,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:19:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:39,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:19:39,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:39,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:39,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991247990] [2024-11-22 21:19:39,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991247990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:39,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:39,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:19:39,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368874899] [2024-11-22 21:19:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:39,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:19:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:19:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:19:39,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:39,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:39,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:39,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:39,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:39,640 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2024-11-22 21:19:39,641 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-11-22 21:19:39,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 807 events. 445/807 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3481 event pairs, 59 based on Foata normal form. 27/828 useless extension candidates. Maximal degree in co-relation 2610. Up to 151 conditions per place. [2024-11-22 21:19:39,644 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2024-11-22 21:19:39,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2024-11-22 21:19:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:19:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:19:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-11-22 21:19:39,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-11-22 21:19:39,645 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2024-11-22 21:19:39,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2024-11-22 21:19:39,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-11-22 21:19:39,652 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2024-11-22 21:19:39,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-22 21:19:39,653 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-11-22 21:19:39,653 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2024-11-22 21:19:39,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:39,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:39,654 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:39,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:19:39,654 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:39,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:39,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1383133169, now seen corresponding path program 1 times [2024-11-22 21:19:39,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:39,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330573828] [2024-11-22 21:19:39,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:39,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330573828] [2024-11-22 21:19:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330573828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925578355] [2024-11-22 21:19:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:39,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:39,738 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) [2024-11-22 21:19:39,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:19:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:39,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 21:19:39,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:39,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925578355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:39,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:39,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 21:19:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509487346] [2024-11-22 21:19:39,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:39,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:19:39,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:19:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:19:39,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:39,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:39,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:39,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:39,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:40,368 INFO L124 PetriNetUnfolderBase]: 571/1058 cut-off events. [2024-11-22 21:19:40,369 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2024-11-22 21:19:40,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1058 events. 571/1058 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4466 event pairs, 137 based on Foata normal form. 63/1117 useless extension candidates. Maximal degree in co-relation 4119. Up to 486 conditions per place. [2024-11-22 21:19:40,374 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2024-11-22 21:19:40,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1349 flow [2024-11-22 21:19:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:19:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:19:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-11-22 21:19:40,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-11-22 21:19:40,376 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 19 states and 288 transitions. [2024-11-22 21:19:40,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1349 flow [2024-11-22 21:19:40,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1270 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-11-22 21:19:40,387 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 524 flow [2024-11-22 21:19:40,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=524, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2024-11-22 21:19:40,387 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-11-22 21:19:40,387 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 524 flow [2024-11-22 21:19:40,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:40,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:40,388 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:40,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:19:40,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:40,589 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:40,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1985942713, now seen corresponding path program 2 times [2024-11-22 21:19:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196002716] [2024-11-22 21:19:40,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:19:40,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:40,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:19:40,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:40,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:40,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196002716] [2024-11-22 21:19:40,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196002716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:40,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989225202] [2024-11-22 21:19:40,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:19:40,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:40,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:40,742 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) [2024-11-22 21:19:40,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:19:40,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:19:40,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:40,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 21:19:40,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:40,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989225202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:40,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:40,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 21:19:40,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623732752] [2024-11-22 21:19:40,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:40,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:19:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:19:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:19:40,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:40,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 524 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:40,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:40,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:40,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:41,471 INFO L124 PetriNetUnfolderBase]: 877/1628 cut-off events. [2024-11-22 21:19:41,471 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-11-22 21:19:41,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 1628 events. 877/1628 cut-off events. For 29480/29480 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7913 event pairs, 70 based on Foata normal form. 72/1696 useless extension candidates. Maximal degree in co-relation 8480. Up to 249 conditions per place. [2024-11-22 21:19:41,482 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 88 selfloop transitions, 46 changer transitions 80/218 dead transitions. [2024-11-22 21:19:41,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 218 transitions, 2565 flow [2024-11-22 21:19:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 21:19:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 21:19:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 415 transitions. [2024-11-22 21:19:41,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2024-11-22 21:19:41,485 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 524 flow. Second operand 27 states and 415 transitions. [2024-11-22 21:19:41,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 218 transitions, 2565 flow [2024-11-22 21:19:41,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 218 transitions, 2089 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-11-22 21:19:41,506 INFO L231 Difference]: Finished difference. Result has 116 places, 70 transitions, 908 flow [2024-11-22 21:19:41,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=908, PETRI_PLACES=116, PETRI_TRANSITIONS=70} [2024-11-22 21:19:41,507 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-11-22 21:19:41,508 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 70 transitions, 908 flow [2024-11-22 21:19:41,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:41,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:41,508 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:41,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:19:41,710 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,SelfDestructingSolverStorable7 [2024-11-22 21:19:41,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:41,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1216840336, now seen corresponding path program 1 times [2024-11-22 21:19:41,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:41,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248657206] [2024-11-22 21:19:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:41,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248657206] [2024-11-22 21:19:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248657206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632901389] [2024-11-22 21:19:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:41,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:41,859 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) [2024-11-22 21:19:41,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:19:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:41,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:19:41,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:41,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632901389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:42,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:42,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-22 21:19:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114655280] [2024-11-22 21:19:42,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:42,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 21:19:42,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 21:19:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-22 21:19:42,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:42,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 70 transitions, 908 flow. Second operand has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:42,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:42,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:42,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:42,768 INFO L124 PetriNetUnfolderBase]: 1093/2114 cut-off events. [2024-11-22 21:19:42,769 INFO L125 PetriNetUnfolderBase]: For 73277/73277 co-relation queries the response was YES. [2024-11-22 21:19:42,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 2114 events. 1093/2114 cut-off events. For 73277/73277 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11488 event pairs, 94 based on Foata normal form. 72/2182 useless extension candidates. Maximal degree in co-relation 13362. Up to 409 conditions per place. [2024-11-22 21:19:42,784 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 86 selfloop transitions, 64 changer transitions 88/242 dead transitions. [2024-11-22 21:19:42,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 242 transitions, 3738 flow [2024-11-22 21:19:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 21:19:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 21:19:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2024-11-22 21:19:42,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2024-11-22 21:19:42,788 INFO L175 Difference]: Start difference. First operand has 116 places, 70 transitions, 908 flow. Second operand 28 states and 425 transitions. [2024-11-22 21:19:42,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 242 transitions, 3738 flow [2024-11-22 21:19:42,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 3143 flow, removed 281 selfloop flow, removed 15 redundant places. [2024-11-22 21:19:42,863 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 1417 flow [2024-11-22 21:19:42,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1417, PETRI_PLACES=138, PETRI_TRANSITIONS=92} [2024-11-22 21:19:42,864 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-11-22 21:19:42,864 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 1417 flow [2024-11-22 21:19:42,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:42,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:42,865 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:42,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 21:19:43,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:43,065 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:43,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash -974308042, now seen corresponding path program 2 times [2024-11-22 21:19:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163596558] [2024-11-22 21:19:43,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:19:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:43,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:19:43,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163596558] [2024-11-22 21:19:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163596558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309556142] [2024-11-22 21:19:43,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:19:43,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:43,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:43,184 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) [2024-11-22 21:19:43,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:19:43,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:19:43,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:43,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 21:19:43,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:43,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309556142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:43,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 21:19:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994168580] [2024-11-22 21:19:43,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:43,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:19:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:19:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:19:43,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:43,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 92 transitions, 1417 flow. Second operand has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:43,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:43,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:43,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:44,387 INFO L124 PetriNetUnfolderBase]: 1552/2946 cut-off events. [2024-11-22 21:19:44,387 INFO L125 PetriNetUnfolderBase]: For 172163/172163 co-relation queries the response was YES. [2024-11-22 21:19:44,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22008 conditions, 2946 events. 1552/2946 cut-off events. For 172163/172163 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16748 event pairs, 72 based on Foata normal form. 99/3041 useless extension candidates. Maximal degree in co-relation 21946. Up to 594 conditions per place. [2024-11-22 21:19:44,412 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 113 selfloop transitions, 105 changer transitions 111/333 dead transitions. [2024-11-22 21:19:44,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 333 transitions, 6380 flow [2024-11-22 21:19:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 21:19:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-22 21:19:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 535 transitions. [2024-11-22 21:19:44,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2024-11-22 21:19:44,415 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 1417 flow. Second operand 35 states and 535 transitions. [2024-11-22 21:19:44,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 333 transitions, 6380 flow [2024-11-22 21:19:44,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 333 transitions, 5128 flow, removed 598 selfloop flow, removed 16 redundant places. [2024-11-22 21:19:44,582 INFO L231 Difference]: Finished difference. Result has 170 places, 134 transitions, 2372 flow [2024-11-22 21:19:44,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2372, PETRI_PLACES=170, PETRI_TRANSITIONS=134} [2024-11-22 21:19:44,583 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-11-22 21:19:44,583 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 134 transitions, 2372 flow [2024-11-22 21:19:44,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:44,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:44,584 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:44,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:19:44,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:44,785 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:44,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1988667951, now seen corresponding path program 3 times [2024-11-22 21:19:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922329524] [2024-11-22 21:19:44,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:19:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:44,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 21:19:44,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:19:44,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:44,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922329524] [2024-11-22 21:19:44,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922329524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:44,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879646115] [2024-11-22 21:19:44,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:19:44,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:44,912 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) [2024-11-22 21:19:44,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:19:44,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 21:19:44,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:44,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:19:44,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:19:45,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:19:45,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879646115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:45,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-22 21:19:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455263951] [2024-11-22 21:19:45,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:45,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 21:19:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 21:19:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:19:45,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:45,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 134 transitions, 2372 flow. Second operand has 21 states, 21 states have (on average 10.285714285714286) internal successors, (216), 21 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:45,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:45,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:45,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:46,916 INFO L124 PetriNetUnfolderBase]: 2686/5036 cut-off events. [2024-11-22 21:19:46,917 INFO L125 PetriNetUnfolderBase]: For 417834/417834 co-relation queries the response was YES. [2024-11-22 21:19:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42439 conditions, 5036 events. 2686/5036 cut-off events. For 417834/417834 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 29245 event pairs, 92 based on Foata normal form. 81/5113 useless extension candidates. Maximal degree in co-relation 42363. Up to 1056 conditions per place. [2024-11-22 21:19:46,958 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 144 selfloop transitions, 179 changer transitions 120/447 dead transitions. [2024-11-22 21:19:46,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 447 transitions, 10290 flow [2024-11-22 21:19:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-22 21:19:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-22 21:19:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 627 transitions. [2024-11-22 21:19:46,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5273338940285954 [2024-11-22 21:19:46,960 INFO L175 Difference]: Start difference. First operand has 170 places, 134 transitions, 2372 flow. Second operand 41 states and 627 transitions. [2024-11-22 21:19:46,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 447 transitions, 10290 flow [2024-11-22 21:19:47,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 447 transitions, 7891 flow, removed 1167 selfloop flow, removed 23 redundant places. [2024-11-22 21:19:47,444 INFO L231 Difference]: Finished difference. Result has 203 places, 216 transitions, 4243 flow [2024-11-22 21:19:47,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4243, PETRI_PLACES=203, PETRI_TRANSITIONS=216} [2024-11-22 21:19:47,445 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-11-22 21:19:47,446 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 216 transitions, 4243 flow [2024-11-22 21:19:47,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.285714285714286) internal successors, (216), 21 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:47,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:47,446 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:47,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:19:47,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 21:19:47,651 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:47,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1905289846, now seen corresponding path program 4 times [2024-11-22 21:19:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:47,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387296620] [2024-11-22 21:19:47,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:19:47,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:47,667 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:19:47,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387296620] [2024-11-22 21:19:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387296620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738198274] [2024-11-22 21:19:47,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:19:47,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:48,000 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) [2024-11-22 21:19:48,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:19:48,045 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:19:48,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:48,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 21:19:48,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:48,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:48,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738198274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:48,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:48,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-22 21:19:48,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375965548] [2024-11-22 21:19:48,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:48,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 21:19:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 21:19:48,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 21:19:48,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:48,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 216 transitions, 4243 flow. Second operand has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 33 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:48,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:48,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:48,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:50,490 INFO L124 PetriNetUnfolderBase]: 3064/5870 cut-off events. [2024-11-22 21:19:50,490 INFO L125 PetriNetUnfolderBase]: For 696851/696851 co-relation queries the response was YES. [2024-11-22 21:19:50,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55156 conditions, 5870 events. 3064/5870 cut-off events. For 696851/696851 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 34009 event pairs, 1163 based on Foata normal form. 153/6019 useless extension candidates. Maximal degree in co-relation 55067. Up to 3978 conditions per place. [2024-11-22 21:19:50,549 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 287 selfloop transitions, 45 changer transitions 177/513 dead transitions. [2024-11-22 21:19:50,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 513 transitions, 13447 flow [2024-11-22 21:19:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-22 21:19:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-22 21:19:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 728 transitions. [2024-11-22 21:19:50,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5123152709359606 [2024-11-22 21:19:50,554 INFO L175 Difference]: Start difference. First operand has 203 places, 216 transitions, 4243 flow. Second operand 49 states and 728 transitions. [2024-11-22 21:19:50,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 513 transitions, 13447 flow [2024-11-22 21:19:51,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 513 transitions, 10984 flow, removed 1180 selfloop flow, removed 21 redundant places. [2024-11-22 21:19:51,538 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 4717 flow [2024-11-22 21:19:51,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=4717, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2024-11-22 21:19:51,539 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-11-22 21:19:51,539 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 4717 flow [2024-11-22 21:19:51,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 33 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:51,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:51,540 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:51,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:19:51,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:51,745 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:51,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:51,745 INFO L85 PathProgramCache]: Analyzing trace with hash -104304382, now seen corresponding path program 5 times [2024-11-22 21:19:51,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:51,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037483359] [2024-11-22 21:19:51,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:19:51,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:51,761 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-22 21:19:51,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037483359] [2024-11-22 21:19:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037483359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671539368] [2024-11-22 21:19:52,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:19:52,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:52,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:52,141 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) [2024-11-22 21:19:52,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:19:52,189 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-22 21:19:52,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:52,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 21:19:52,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:52,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671539368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:52,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-22 21:19:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848646233] [2024-11-22 21:19:52,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 21:19:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 21:19:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 21:19:52,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:52,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 4717 flow. Second operand has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:52,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:52,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:52,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:55,433 INFO L124 PetriNetUnfolderBase]: 3568/7001 cut-off events. [2024-11-22 21:19:55,433 INFO L125 PetriNetUnfolderBase]: For 1149097/1149097 co-relation queries the response was YES. [2024-11-22 21:19:55,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72522 conditions, 7001 events. 3568/7001 cut-off events. For 1149097/1149097 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 42995 event pairs, 826 based on Foata normal form. 153/7150 useless extension candidates. Maximal degree in co-relation 72406. Up to 3073 conditions per place. [2024-11-22 21:19:55,527 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 268 selfloop transitions, 147 changer transitions 191/610 dead transitions. [2024-11-22 21:19:55,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 610 transitions, 16888 flow [2024-11-22 21:19:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-22 21:19:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-22 21:19:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 835 transitions. [2024-11-22 21:19:55,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141625615763546 [2024-11-22 21:19:55,535 INFO L175 Difference]: Start difference. First operand has 258 places, 242 transitions, 4717 flow. Second operand 56 states and 835 transitions. [2024-11-22 21:19:55,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 610 transitions, 16888 flow [2024-11-22 21:19:58,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 610 transitions, 14589 flow, removed 1131 selfloop flow, removed 28 redundant places. [2024-11-22 21:19:58,320 INFO L231 Difference]: Finished difference. Result has 301 places, 298 transitions, 6445 flow [2024-11-22 21:19:58,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6445, PETRI_PLACES=301, PETRI_TRANSITIONS=298} [2024-11-22 21:19:58,321 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-11-22 21:19:58,321 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 298 transitions, 6445 flow [2024-11-22 21:19:58,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:58,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:58,322 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:58,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 21:19:58,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:58,526 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:19:58,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash -378564232, now seen corresponding path program 6 times [2024-11-22 21:19:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:58,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438880842] [2024-11-22 21:19:58,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:19:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:58,537 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-22 21:19:58,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438880842] [2024-11-22 21:19:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438880842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373379075] [2024-11-22 21:19:58,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:19:58,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:58,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:58,881 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) [2024-11-22 21:19:58,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:19:58,931 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-22 21:19:58,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:58,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 21:19:58,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:59,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373379075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:59,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:59,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-22 21:19:59,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45040101] [2024-11-22 21:19:59,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:59,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 21:19:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 21:19:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 21:19:59,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:19:59,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 298 transitions, 6445 flow. Second operand has 34 states, 34 states have (on average 10.176470588235293) internal successors, (346), 34 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:59,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:59,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:19:59,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:20:03,199 INFO L124 PetriNetUnfolderBase]: 4828/9557 cut-off events. [2024-11-22 21:20:03,200 INFO L125 PetriNetUnfolderBase]: For 2163124/2163124 co-relation queries the response was YES. [2024-11-22 21:20:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110261 conditions, 9557 events. 4828/9557 cut-off events. For 2163124/2163124 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 63441 event pairs, 148 based on Foata normal form. 153/9706 useless extension candidates. Maximal degree in co-relation 110129. Up to 2352 conditions per place. [2024-11-22 21:20:03,326 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 193 selfloop transitions, 374 changer transitions 203/774 dead transitions. [2024-11-22 21:20:03,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 774 transitions, 23426 flow [2024-11-22 21:20:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-22 21:20:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-22 21:20:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 947 transitions. [2024-11-22 21:20:03,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.518336070060208 [2024-11-22 21:20:03,332 INFO L175 Difference]: Start difference. First operand has 301 places, 298 transitions, 6445 flow. Second operand 63 states and 947 transitions. [2024-11-22 21:20:03,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 774 transitions, 23426 flow [2024-11-22 21:20:14,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 774 transitions, 20419 flow, removed 1470 selfloop flow, removed 31 redundant places. [2024-11-22 21:20:14,550 INFO L231 Difference]: Finished difference. Result has 353 places, 420 transitions, 10314 flow [2024-11-22 21:20:14,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5210, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=10314, PETRI_PLACES=353, PETRI_TRANSITIONS=420} [2024-11-22 21:20:14,551 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-11-22 21:20:14,551 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 420 transitions, 10314 flow [2024-11-22 21:20:14,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.176470588235293) internal successors, (346), 34 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:14,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:20:14,552 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:20:14,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 21:20:14,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 21:20:14,753 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:20:14,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:20:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1502506776, now seen corresponding path program 7 times [2024-11-22 21:20:14,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:20:14,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907555578] [2024-11-22 21:20:14,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:20:14,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:20:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:20:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:20:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:20:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907555578] [2024-11-22 21:20:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907555578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:20:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415556509] [2024-11-22 21:20:15,102 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:20:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:20:15,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:20:15,104 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) [2024-11-22 21:20:15,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 21:20:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:20:15,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 21:20:15,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:20:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:20:15,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:20:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:20:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415556509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:20:15,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:20:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-22 21:20:15,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154752030] [2024-11-22 21:20:15,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:20:15,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 21:20:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:20:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 21:20:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 21:20:15,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:20:15,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 420 transitions, 10314 flow. Second operand has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:15,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:20:15,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:20:15,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:20:21,026 INFO L124 PetriNetUnfolderBase]: 5980/11717 cut-off events. [2024-11-22 21:20:21,027 INFO L125 PetriNetUnfolderBase]: For 3848080/3848080 co-relation queries the response was YES. [2024-11-22 21:20:21,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158284 conditions, 11717 events. 5980/11717 cut-off events. For 3848080/3848080 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 78308 event pairs, 80 based on Foata normal form. 162/11875 useless extension candidates. Maximal degree in co-relation 158130. Up to 2880 conditions per place. [2024-11-22 21:20:21,249 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 240 selfloop transitions, 468 changer transitions 230/942 dead transitions. [2024-11-22 21:20:21,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 942 transitions, 33476 flow [2024-11-22 21:20:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-22 21:20:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2024-11-22 21:20:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 1175 transitions. [2024-11-22 21:20:21,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5261979399910435 [2024-11-22 21:20:21,252 INFO L175 Difference]: Start difference. First operand has 353 places, 420 transitions, 10314 flow. Second operand 77 states and 1175 transitions. [2024-11-22 21:20:21,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 942 transitions, 33476 flow [2024-11-22 21:20:34,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 942 transitions, 26302 flow, removed 3544 selfloop flow, removed 30 redundant places. [2024-11-22 21:20:34,426 INFO L231 Difference]: Finished difference. Result has 431 places, 501 transitions, 13702 flow [2024-11-22 21:20:34,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8148, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=13702, PETRI_PLACES=431, PETRI_TRANSITIONS=501} [2024-11-22 21:20:34,427 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-11-22 21:20:34,427 INFO L471 AbstractCegarLoop]: Abstraction has has 431 places, 501 transitions, 13702 flow [2024-11-22 21:20:34,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.181818181818182) internal successors, (336), 33 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:34,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:20:34,428 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:20:34,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 21:20:34,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 21:20:34,632 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:20:34,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:20:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 774338023, now seen corresponding path program 8 times [2024-11-22 21:20:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:20:34,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359059589] [2024-11-22 21:20:34,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:20:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:20:34,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:20:34,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:20:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:20:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359059589] [2024-11-22 21:20:35,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359059589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:20:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36090146] [2024-11-22 21:20:35,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:20:35,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:20:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:20:35,032 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) [2024-11-22 21:20:35,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 21:20:35,084 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:20:35,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:20:35,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 21:20:35,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:20:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:35,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:20:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36090146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:20:35,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:20:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-22 21:20:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839701306] [2024-11-22 21:20:35,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:20:35,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-22 21:20:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:20:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-22 21:20:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=2051, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 21:20:35,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:20:35,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 501 transitions, 13702 flow. Second operand has 52 states, 52 states have (on average 10.01923076923077) internal successors, (521), 52 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:35,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:20:35,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:20:35,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:20:44,044 INFO L124 PetriNetUnfolderBase]: 7519/14723 cut-off events. [2024-11-22 21:20:44,044 INFO L125 PetriNetUnfolderBase]: For 6360145/6360145 co-relation queries the response was YES. [2024-11-22 21:20:44,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223378 conditions, 14723 events. 7519/14723 cut-off events. For 6360145/6360145 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 95999 event pairs, 65 based on Foata normal form. 216/14933 useless extension candidates. Maximal degree in co-relation 223192. Up to 3591 conditions per place. [2024-11-22 21:20:44,306 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 311 selfloop transitions, 587 changer transitions 291/1193 dead transitions. [2024-11-22 21:20:44,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 1193 transitions, 48910 flow [2024-11-22 21:20:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-22 21:20:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2024-11-22 21:20:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 1491 transitions. [2024-11-22 21:20:44,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246305418719212 [2024-11-22 21:20:44,317 INFO L175 Difference]: Start difference. First operand has 431 places, 501 transitions, 13702 flow. Second operand 98 states and 1491 transitions. [2024-11-22 21:20:44,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 1193 transitions, 48910 flow [2024-11-22 21:21:05,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1193 transitions, 37679 flow, removed 5504 selfloop flow, removed 38 redundant places. [2024-11-22 21:21:05,481 INFO L231 Difference]: Finished difference. Result has 525 places, 624 transitions, 17602 flow [2024-11-22 21:21:05,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10255, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=17602, PETRI_PLACES=525, PETRI_TRANSITIONS=624} [2024-11-22 21:21:05,482 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 495 predicate places. [2024-11-22 21:21:05,482 INFO L471 AbstractCegarLoop]: Abstraction has has 525 places, 624 transitions, 17602 flow [2024-11-22 21:21:05,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 10.01923076923077) internal successors, (521), 52 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:05,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:05,483 INFO L204 CegarLoopForPetriNet]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:05,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 21:21:05,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 21:21:05,688 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:21:05,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash 573278639, now seen corresponding path program 9 times [2024-11-22 21:21:05,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212896284] [2024-11-22 21:21:05,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:21:05,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:05,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-22 21:21:05,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:21:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:06,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:06,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212896284] [2024-11-22 21:21:06,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212896284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:21:06,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562209468] [2024-11-22 21:21:06,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:21:06,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:21:06,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:21:06,490 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:21:06,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 21:21:06,559 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-22 21:21:06,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:21:06,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 21:21:06,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:21:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:06,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:21:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562209468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:21:07,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:21:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 48 [2024-11-22 21:21:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154870340] [2024-11-22 21:21:07,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:21:07,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-22 21:21:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-22 21:21:07,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2024-11-22 21:21:07,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-22 21:21:07,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 624 transitions, 17602 flow. Second operand has 49 states, 49 states have (on average 10.10204081632653) internal successors, (495), 49 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:07,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:07,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-22 21:21:07,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand