./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:16:28,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:16:28,419 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:16:28,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:16:28,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:16:28,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:16:28,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:16:28,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:16:28,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:16:28,445 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:16:28,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:16:28,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:16:28,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:16:28,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:16:28,447 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:16:28,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:16:28,447 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:16:28,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:16:28,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:16:28,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:16:28,447 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:16:28,448 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:16:28,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:16:28,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:16:28,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:16:28,450 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 [2025-03-04 10:16:28,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:16:28,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:16:28,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:16:28,678 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:16:28,678 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:16:28,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2025-03-04 10:16:29,791 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77b5f838e/8bd70d76e565494ebf9e2c2981d6c1fd/FLAG885ccb4cb [2025-03-04 10:16:30,007 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:16:30,008 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2025-03-04 10:16:30,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77b5f838e/8bd70d76e565494ebf9e2c2981d6c1fd/FLAG885ccb4cb [2025-03-04 10:16:30,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77b5f838e/8bd70d76e565494ebf9e2c2981d6c1fd [2025-03-04 10:16:30,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:16:30,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:16:30,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:16:30,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:16:30,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:16:30,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53dbe50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30, skipping insertion in model container [2025-03-04 10:16:30,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:16:30,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:16:30,507 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:16:30,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:16:30,540 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:16:30,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30 WrapperNode [2025-03-04 10:16:30,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:16:30,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:16:30,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:16:30,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:16:30,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,564 INFO L138 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2025-03-04 10:16:30,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:16:30,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:16:30,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:16:30,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:16:30,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,576 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,588 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]. [2025-03-04 10:16:30,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,596 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:16:30,604 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:16:30,604 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:16:30,604 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:16:30,609 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (1/1) ... [2025-03-04 10:16:30,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:16:30,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:16:30,640 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) [2025-03-04 10:16:30,645 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 [2025-03-04 10:16:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:16:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 10:16:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 10:16:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 10:16:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 10:16:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 10:16:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 10:16:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:16:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 10:16:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 10:16:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:16:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:16:30,661 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:16:30,722 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:16:30,723 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:16:30,907 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:16:30,908 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:16:31,056 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:16:31,057 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:16:31,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:16:31 BoogieIcfgContainer [2025-03-04 10:16:31,058 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:16:31,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:16:31,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:16:31,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:16:31,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:16:30" (1/3) ... [2025-03-04 10:16:31,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5f699f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:16:31, skipping insertion in model container [2025-03-04 10:16:31,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:16:30" (2/3) ... [2025-03-04 10:16:31,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5f699f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:16:31, skipping insertion in model container [2025-03-04 10:16:31,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:16:31" (3/3) ... [2025-03-04 10:16:31,066 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2025-03-04 10:16:31,077 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:16:31,079 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-threaded-sum-3.wvr.c that has 4 procedures, 35 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-03-04 10:16:31,079 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:16:31,122 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 10:16:31,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 37 transitions, 95 flow [2025-03-04 10:16:31,176 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2025-03-04 10:16:31,178 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:16:31,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 3/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2025-03-04 10:16:31,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 37 transitions, 95 flow [2025-03-04 10:16:31,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2025-03-04 10:16:31,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:16:31,201 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;@3700846f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:16:31,202 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 10:16:31,210 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:16:31,210 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2025-03-04 10:16:31,210 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 10:16:31,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:31,211 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:31,211 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:31,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:31,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1637151758, now seen corresponding path program 1 times [2025-03-04 10:16:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:31,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347254596] [2025-03-04 10:16:31,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:16:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:31,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 10:16:31,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 10:16:31,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:16:31,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:31,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:31,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347254596] [2025-03-04 10:16:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347254596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:31,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:16:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97865934] [2025-03-04 10:16:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:31,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:16:31,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:31,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:16:31,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:16:31,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:31,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:31,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:31,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:31,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:32,020 INFO L124 PetriNetUnfolderBase]: 644/1018 cut-off events. [2025-03-04 10:16:32,020 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2025-03-04 10:16:32,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1018 events. 644/1018 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4537 event pairs, 47 based on Foata normal form. 36/1048 useless extension candidates. Maximal degree in co-relation 1805. Up to 727 conditions per place. [2025-03-04 10:16:32,031 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 43 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-03-04 10:16:32,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 236 flow [2025-03-04 10:16:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:16:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:16:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-04 10:16:32,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6351351351351351 [2025-03-04 10:16:32,046 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 4 states and 94 transitions. [2025-03-04 10:16:32,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 236 flow [2025-03-04 10:16:32,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 10:16:32,054 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 100 flow [2025-03-04 10:16:32,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2025-03-04 10:16:32,059 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2025-03-04 10:16:32,060 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 100 flow [2025-03-04 10:16:32,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:32,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:32,061 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:32,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:16:32,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:32,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1856448966, now seen corresponding path program 1 times [2025-03-04 10:16:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:32,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034793201] [2025-03-04 10:16:32,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:16:32,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:32,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 10:16:32,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 10:16:32,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:16:32,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034793201] [2025-03-04 10:16:32,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034793201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:32,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:32,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:16:32,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988193504] [2025-03-04 10:16:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:32,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:16:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:32,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:16:32,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:16:32,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:32,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:32,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:32,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:32,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:32,731 INFO L124 PetriNetUnfolderBase]: 1225/1894 cut-off events. [2025-03-04 10:16:32,731 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2025-03-04 10:16:32,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4249 conditions, 1894 events. 1225/1894 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9358 event pairs, 384 based on Foata normal form. 28/1913 useless extension candidates. Maximal degree in co-relation 2782. Up to 1047 conditions per place. [2025-03-04 10:16:32,748 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2025-03-04 10:16:32,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 93 transitions, 450 flow [2025-03-04 10:16:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:16:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:16:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-04 10:16:32,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2025-03-04 10:16:32,751 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 100 flow. Second operand 5 states and 125 transitions. [2025-03-04 10:16:32,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 93 transitions, 450 flow [2025-03-04 10:16:32,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 93 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 10:16:32,755 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 256 flow [2025-03-04 10:16:32,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2025-03-04 10:16:32,755 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2025-03-04 10:16:32,756 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 256 flow [2025-03-04 10:16:32,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:32,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:32,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:32,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:16:32,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:32,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:32,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1694399414, now seen corresponding path program 2 times [2025-03-04 10:16:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:32,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095107180] [2025-03-04 10:16:32,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:16:32,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:32,768 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-04 10:16:32,788 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 10:16:32,791 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:16:32,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095107180] [2025-03-04 10:16:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095107180] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:16:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996448477] [2025-03-04 10:16:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:32,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:16:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:32,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:16:32,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:16:32,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:32,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:32,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:32,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:32,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:33,177 INFO L124 PetriNetUnfolderBase]: 1161/1882 cut-off events. [2025-03-04 10:16:33,178 INFO L125 PetriNetUnfolderBase]: For 2073/2084 co-relation queries the response was YES. [2025-03-04 10:16:33,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 1882 events. 1161/1882 cut-off events. For 2073/2084 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9772 event pairs, 212 based on Foata normal form. 72/1948 useless extension candidates. Maximal degree in co-relation 2573. Up to 916 conditions per place. [2025-03-04 10:16:33,188 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 82 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2025-03-04 10:16:33,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 95 transitions, 653 flow [2025-03-04 10:16:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:16:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:16:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-03-04 10:16:33,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6283783783783784 [2025-03-04 10:16:33,190 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 256 flow. Second operand 4 states and 93 transitions. [2025-03-04 10:16:33,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 95 transitions, 653 flow [2025-03-04 10:16:33,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 95 transitions, 653 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 10:16:33,193 INFO L231 Difference]: Finished difference. Result has 48 places, 57 transitions, 302 flow [2025-03-04 10:16:33,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2025-03-04 10:16:33,193 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2025-03-04 10:16:33,194 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions, 302 flow [2025-03-04 10:16:33,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:33,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:33,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:33,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:16:33,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:33,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2023088901, now seen corresponding path program 1 times [2025-03-04 10:16:33,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:33,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282098998] [2025-03-04 10:16:33,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:16:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:33,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 10:16:33,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 10:16:33,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:16:33,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:33,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:33,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282098998] [2025-03-04 10:16:33,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282098998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:33,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:33,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:16:33,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296928748] [2025-03-04 10:16:33,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:33,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:16:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:33,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:16:33,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:16:33,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:33,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:33,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:33,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:33,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:33,628 INFO L124 PetriNetUnfolderBase]: 1505/2361 cut-off events. [2025-03-04 10:16:33,628 INFO L125 PetriNetUnfolderBase]: For 2764/2764 co-relation queries the response was YES. [2025-03-04 10:16:33,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7504 conditions, 2361 events. 1505/2361 cut-off events. For 2764/2764 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12537 event pairs, 269 based on Foata normal form. 72/2429 useless extension candidates. Maximal degree in co-relation 5518. Up to 1740 conditions per place. [2025-03-04 10:16:33,646 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 83 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2025-03-04 10:16:33,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 100 transitions, 693 flow [2025-03-04 10:16:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:16:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:16:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-04 10:16:33,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2025-03-04 10:16:33,649 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 302 flow. Second operand 5 states and 117 transitions. [2025-03-04 10:16:33,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 100 transitions, 693 flow [2025-03-04 10:16:33,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 100 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:16:33,655 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 412 flow [2025-03-04 10:16:33,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2025-03-04 10:16:33,655 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2025-03-04 10:16:33,655 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 412 flow [2025-03-04 10:16:33,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:33,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:33,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:33,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:16:33,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:33,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1287327415, now seen corresponding path program 2 times [2025-03-04 10:16:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063358601] [2025-03-04 10:16:33,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:16:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:33,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 1 equivalence classes. [2025-03-04 10:16:33,676 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 10:16:33,676 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:16:33,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:33,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063358601] [2025-03-04 10:16:33,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063358601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:33,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:33,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:16:33,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197078276] [2025-03-04 10:16:33,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:33,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:16:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:33,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:16:33,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:16:33,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:33,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:33,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:33,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:33,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:34,194 INFO L124 PetriNetUnfolderBase]: 2065/3236 cut-off events. [2025-03-04 10:16:34,195 INFO L125 PetriNetUnfolderBase]: For 5123/5126 co-relation queries the response was YES. [2025-03-04 10:16:34,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10901 conditions, 3236 events. 2065/3236 cut-off events. For 5123/5126 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 18509 event pairs, 415 based on Foata normal form. 90/3321 useless extension candidates. Maximal degree in co-relation 6410. Up to 2057 conditions per place. [2025-03-04 10:16:34,211 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 86 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2025-03-04 10:16:34,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 113 transitions, 880 flow [2025-03-04 10:16:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:16:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:16:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-04 10:16:34,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2025-03-04 10:16:34,213 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 412 flow. Second operand 5 states and 117 transitions. [2025-03-04 10:16:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 113 transitions, 880 flow [2025-03-04 10:16:34,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 113 transitions, 866 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-04 10:16:34,218 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 469 flow [2025-03-04 10:16:34,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2025-03-04 10:16:34,220 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2025-03-04 10:16:34,221 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 469 flow [2025-03-04 10:16:34,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:34,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:34,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:34,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 10:16:34,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:34,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1328780691, now seen corresponding path program 3 times [2025-03-04 10:16:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308875251] [2025-03-04 10:16:34,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:16:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:34,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 1 equivalence classes. [2025-03-04 10:16:34,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 10:16:34,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 10:16:34,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308875251] [2025-03-04 10:16:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308875251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:34,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:16:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889478952] [2025-03-04 10:16:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:34,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:16:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:34,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:16:34,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:16:34,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:34,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:34,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:34,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:34,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:34,664 INFO L124 PetriNetUnfolderBase]: 2595/3993 cut-off events. [2025-03-04 10:16:34,664 INFO L125 PetriNetUnfolderBase]: For 6947/6959 co-relation queries the response was YES. [2025-03-04 10:16:34,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14089 conditions, 3993 events. 2595/3993 cut-off events. For 6947/6959 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 22459 event pairs, 302 based on Foata normal form. 124/4113 useless extension candidates. Maximal degree in co-relation 7114. Up to 2384 conditions per place. [2025-03-04 10:16:34,686 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 107 selfloop transitions, 13 changer transitions 0/127 dead transitions. [2025-03-04 10:16:34,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 127 transitions, 1018 flow [2025-03-04 10:16:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:16:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:16:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-04 10:16:34,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2025-03-04 10:16:34,688 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 469 flow. Second operand 5 states and 125 transitions. [2025-03-04 10:16:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 127 transitions, 1018 flow [2025-03-04 10:16:34,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 127 transitions, 979 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 10:16:34,698 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 552 flow [2025-03-04 10:16:34,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2025-03-04 10:16:34,699 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2025-03-04 10:16:34,699 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 552 flow [2025-03-04 10:16:34,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:34,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:34,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:34,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 10:16:34,700 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:34,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1955491661, now seen corresponding path program 1 times [2025-03-04 10:16:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295130689] [2025-03-04 10:16:34,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:16:34,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:34,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:34,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:34,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:16:34,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:34,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:34,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295130689] [2025-03-04 10:16:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295130689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:34,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 10:16:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60372753] [2025-03-04 10:16:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:34,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:16:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:34,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:16:34,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:16:34,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:34,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:34,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:34,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:35,411 INFO L124 PetriNetUnfolderBase]: 3856/5716 cut-off events. [2025-03-04 10:16:35,411 INFO L125 PetriNetUnfolderBase]: For 20382/20382 co-relation queries the response was YES. [2025-03-04 10:16:35,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23101 conditions, 5716 events. 3856/5716 cut-off events. For 20382/20382 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32023 event pairs, 75 based on Foata normal form. 328/6042 useless extension candidates. Maximal degree in co-relation 11156. Up to 1626 conditions per place. [2025-03-04 10:16:35,445 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 216 selfloop transitions, 44 changer transitions 0/266 dead transitions. [2025-03-04 10:16:35,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 266 transitions, 2621 flow [2025-03-04 10:16:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 10:16:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 10:16:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2025-03-04 10:16:35,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5702702702702702 [2025-03-04 10:16:35,447 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 552 flow. Second operand 10 states and 211 transitions. [2025-03-04 10:16:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 266 transitions, 2621 flow [2025-03-04 10:16:35,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 266 transitions, 2581 flow, removed 7 selfloop flow, removed 1 redundant places. [2025-03-04 10:16:35,469 INFO L231 Difference]: Finished difference. Result has 76 places, 108 transitions, 961 flow [2025-03-04 10:16:35,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=76, PETRI_TRANSITIONS=108} [2025-03-04 10:16:35,470 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2025-03-04 10:16:35,470 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 108 transitions, 961 flow [2025-03-04 10:16:35,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:35,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:35,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:35,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 10:16:35,471 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:35,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash -786895625, now seen corresponding path program 2 times [2025-03-04 10:16:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:35,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314235586] [2025-03-04 10:16:35,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:16:35,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:35,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:35,484 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:35,485 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:16:35,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:35,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:35,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314235586] [2025-03-04 10:16:35,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314235586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:35,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:35,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:16:35,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308613652] [2025-03-04 10:16:35,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:35,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:16:35,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:35,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:16:35,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:16:35,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:35,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 108 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:35,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:35,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:35,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:36,199 INFO L124 PetriNetUnfolderBase]: 4976/7501 cut-off events. [2025-03-04 10:16:36,199 INFO L125 PetriNetUnfolderBase]: For 38110/38110 co-relation queries the response was YES. [2025-03-04 10:16:36,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35093 conditions, 7501 events. 4976/7501 cut-off events. For 38110/38110 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 44647 event pairs, 768 based on Foata normal form. 78/7577 useless extension candidates. Maximal degree in co-relation 22846. Up to 2999 conditions per place. [2025-03-04 10:16:36,249 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 155 selfloop transitions, 32 changer transitions 13/206 dead transitions. [2025-03-04 10:16:36,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 206 transitions, 2141 flow [2025-03-04 10:16:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:16:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:16:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-03-04 10:16:36,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2025-03-04 10:16:36,250 INFO L175 Difference]: Start difference. First operand has 76 places, 108 transitions, 961 flow. Second operand 5 states and 123 transitions. [2025-03-04 10:16:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 206 transitions, 2141 flow [2025-03-04 10:16:36,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 206 transitions, 2131 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-04 10:16:36,307 INFO L231 Difference]: Finished difference. Result has 84 places, 122 transitions, 1232 flow [2025-03-04 10:16:36,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1232, PETRI_PLACES=84, PETRI_TRANSITIONS=122} [2025-03-04 10:16:36,309 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2025-03-04 10:16:36,310 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 122 transitions, 1232 flow [2025-03-04 10:16:36,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:36,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:36,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:36,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 10:16:36,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:36,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash -79393421, now seen corresponding path program 3 times [2025-03-04 10:16:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379420341] [2025-03-04 10:16:36,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:16:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:36,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:36,328 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:36,331 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 10:16:36,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:36,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379420341] [2025-03-04 10:16:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379420341] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:36,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 10:16:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929048248] [2025-03-04 10:16:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:36,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:16:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:36,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:16:36,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:16:36,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:36,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 122 transitions, 1232 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:36,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:36,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:36,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:37,333 INFO L124 PetriNetUnfolderBase]: 5996/8793 cut-off events. [2025-03-04 10:16:37,334 INFO L125 PetriNetUnfolderBase]: For 62386/62386 co-relation queries the response was YES. [2025-03-04 10:16:37,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44872 conditions, 8793 events. 5996/8793 cut-off events. For 62386/62386 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 51190 event pairs, 268 based on Foata normal form. 244/9035 useless extension candidates. Maximal degree in co-relation 26514. Up to 2342 conditions per place. [2025-03-04 10:16:37,392 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 185 selfloop transitions, 54 changer transitions 0/245 dead transitions. [2025-03-04 10:16:37,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 245 transitions, 2895 flow [2025-03-04 10:16:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 10:16:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 10:16:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2025-03-04 10:16:37,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-04 10:16:37,394 INFO L175 Difference]: Start difference. First operand has 84 places, 122 transitions, 1232 flow. Second operand 9 states and 185 transitions. [2025-03-04 10:16:37,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 245 transitions, 2895 flow [2025-03-04 10:16:37,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 245 transitions, 2869 flow, removed 13 selfloop flow, removed 0 redundant places. [2025-03-04 10:16:37,463 INFO L231 Difference]: Finished difference. Result has 98 places, 134 transitions, 1564 flow [2025-03-04 10:16:37,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1564, PETRI_PLACES=98, PETRI_TRANSITIONS=134} [2025-03-04 10:16:37,464 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2025-03-04 10:16:37,464 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 134 transitions, 1564 flow [2025-03-04 10:16:37,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:37,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:37,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:37,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 10:16:37,464 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:37,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash -907787811, now seen corresponding path program 4 times [2025-03-04 10:16:37,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:37,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827814858] [2025-03-04 10:16:37,465 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:16:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:37,471 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-04 10:16:37,494 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:37,494 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:16:37,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:38,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827814858] [2025-03-04 10:16:38,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827814858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:38,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 10:16:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900409720] [2025-03-04 10:16:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:38,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 10:16:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:38,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 10:16:38,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-04 10:16:38,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:38,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 134 transitions, 1564 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:38,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:38,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:38,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:40,910 INFO L124 PetriNetUnfolderBase]: 7819/11847 cut-off events. [2025-03-04 10:16:40,911 INFO L125 PetriNetUnfolderBase]: For 101580/101670 co-relation queries the response was YES. [2025-03-04 10:16:40,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64684 conditions, 11847 events. 7819/11847 cut-off events. For 101580/101670 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 75027 event pairs, 885 based on Foata normal form. 100/11927 useless extension candidates. Maximal degree in co-relation 42419. Up to 7581 conditions per place. [2025-03-04 10:16:41,111 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 237 selfloop transitions, 75 changer transitions 72/395 dead transitions. [2025-03-04 10:16:41,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 395 transitions, 4955 flow [2025-03-04 10:16:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 10:16:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 10:16:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 373 transitions. [2025-03-04 10:16:41,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56006006006006 [2025-03-04 10:16:41,114 INFO L175 Difference]: Start difference. First operand has 98 places, 134 transitions, 1564 flow. Second operand 18 states and 373 transitions. [2025-03-04 10:16:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 395 transitions, 4955 flow [2025-03-04 10:16:41,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 395 transitions, 4931 flow, removed 12 selfloop flow, removed 0 redundant places. [2025-03-04 10:16:41,226 INFO L231 Difference]: Finished difference. Result has 127 places, 200 transitions, 2708 flow [2025-03-04 10:16:41,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2708, PETRI_PLACES=127, PETRI_TRANSITIONS=200} [2025-03-04 10:16:41,227 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2025-03-04 10:16:41,227 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 200 transitions, 2708 flow [2025-03-04 10:16:41,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:41,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:41,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:41,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 10:16:41,228 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:41,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1763666935, now seen corresponding path program 5 times [2025-03-04 10:16:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:41,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344709321] [2025-03-04 10:16:41,229 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:16:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:41,236 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:41,255 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:41,255 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:16:41,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344709321] [2025-03-04 10:16:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344709321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:42,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 10:16:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041485546] [2025-03-04 10:16:42,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:42,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 10:16:42,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:42,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 10:16:42,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-04 10:16:42,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 200 transitions, 2708 flow. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:42,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:42,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:45,231 INFO L124 PetriNetUnfolderBase]: 8773/13031 cut-off events. [2025-03-04 10:16:45,231 INFO L125 PetriNetUnfolderBase]: For 131817/131817 co-relation queries the response was YES. [2025-03-04 10:16:45,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78076 conditions, 13031 events. 8773/13031 cut-off events. For 131817/131817 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 80790 event pairs, 1418 based on Foata normal form. 3/13032 useless extension candidates. Maximal degree in co-relation 77961. Up to 11336 conditions per place. [2025-03-04 10:16:45,335 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 270 selfloop transitions, 108 changer transitions 24/408 dead transitions. [2025-03-04 10:16:45,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 408 transitions, 5709 flow [2025-03-04 10:16:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 10:16:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-04 10:16:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 378 transitions. [2025-03-04 10:16:45,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2025-03-04 10:16:45,338 INFO L175 Difference]: Start difference. First operand has 127 places, 200 transitions, 2708 flow. Second operand 21 states and 378 transitions. [2025-03-04 10:16:45,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 408 transitions, 5709 flow [2025-03-04 10:16:45,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 408 transitions, 5490 flow, removed 99 selfloop flow, removed 5 redundant places. [2025-03-04 10:16:45,695 INFO L231 Difference]: Finished difference. Result has 155 places, 285 transitions, 4037 flow [2025-03-04 10:16:45,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2548, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4037, PETRI_PLACES=155, PETRI_TRANSITIONS=285} [2025-03-04 10:16:45,696 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 115 predicate places. [2025-03-04 10:16:45,696 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 285 transitions, 4037 flow [2025-03-04 10:16:45,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:45,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:45,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:45,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 10:16:45,696 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:45,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:45,696 INFO L85 PathProgramCache]: Analyzing trace with hash 302370269, now seen corresponding path program 6 times [2025-03-04 10:16:45,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:45,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783627876] [2025-03-04 10:16:45,697 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:16:45,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:45,701 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:45,720 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:45,720 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 10:16:45,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783627876] [2025-03-04 10:16:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783627876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:47,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:47,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 10:16:47,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984470733] [2025-03-04 10:16:47,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:47,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 10:16:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:47,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 10:16:47,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-04 10:16:47,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:47,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 285 transitions, 4037 flow. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:47,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:47,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:47,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:50,919 INFO L124 PetriNetUnfolderBase]: 12208/18162 cut-off events. [2025-03-04 10:16:50,919 INFO L125 PetriNetUnfolderBase]: For 204948/204948 co-relation queries the response was YES. [2025-03-04 10:16:51,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113090 conditions, 18162 events. 12208/18162 cut-off events. For 204948/204948 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 118417 event pairs, 1243 based on Foata normal form. 9/18169 useless extension candidates. Maximal degree in co-relation 112972. Up to 12254 conditions per place. [2025-03-04 10:16:51,135 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 358 selfloop transitions, 96 changer transitions 58/518 dead transitions. [2025-03-04 10:16:51,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 518 transitions, 7704 flow [2025-03-04 10:16:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 10:16:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 10:16:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 342 transitions. [2025-03-04 10:16:51,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2025-03-04 10:16:51,136 INFO L175 Difference]: Start difference. First operand has 155 places, 285 transitions, 4037 flow. Second operand 18 states and 342 transitions. [2025-03-04 10:16:51,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 518 transitions, 7704 flow [2025-03-04 10:16:51,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 518 transitions, 7440 flow, removed 132 selfloop flow, removed 3 redundant places. [2025-03-04 10:16:51,694 INFO L231 Difference]: Finished difference. Result has 176 places, 330 transitions, 4880 flow [2025-03-04 10:16:51,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4880, PETRI_PLACES=176, PETRI_TRANSITIONS=330} [2025-03-04 10:16:51,694 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2025-03-04 10:16:51,694 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 330 transitions, 4880 flow [2025-03-04 10:16:51,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:51,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:51,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:51,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 10:16:51,695 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:51,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:51,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1537929937, now seen corresponding path program 7 times [2025-03-04 10:16:51,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:51,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-03-04 10:16:51,695 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:16:51,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:51,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:51,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:51,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:16:51,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-03-04 10:16:53,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334976414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:53,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:53,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 10:16:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256778434] [2025-03-04 10:16:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:53,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 10:16:53,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:53,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 10:16:53,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 10:16:53,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:16:53,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 330 transitions, 4880 flow. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:53,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:53,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:16:53,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:16:57,923 INFO L124 PetriNetUnfolderBase]: 12918/19082 cut-off events. [2025-03-04 10:16:57,923 INFO L125 PetriNetUnfolderBase]: For 265446/265446 co-relation queries the response was YES. [2025-03-04 10:16:58,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129477 conditions, 19082 events. 12918/19082 cut-off events. For 265446/265446 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 123520 event pairs, 1251 based on Foata normal form. 9/19089 useless extension candidates. Maximal degree in co-relation 129371. Up to 13223 conditions per place. [2025-03-04 10:16:58,204 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 329 selfloop transitions, 179 changer transitions 79/593 dead transitions. [2025-03-04 10:16:58,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 593 transitions, 8985 flow [2025-03-04 10:16:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-04 10:16:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-04 10:16:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2025-03-04 10:16:58,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2025-03-04 10:16:58,206 INFO L175 Difference]: Start difference. First operand has 176 places, 330 transitions, 4880 flow. Second operand 24 states and 426 transitions. [2025-03-04 10:16:58,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 593 transitions, 8985 flow [2025-03-04 10:16:59,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 593 transitions, 8822 flow, removed 73 selfloop flow, removed 2 redundant places. [2025-03-04 10:16:59,080 INFO L231 Difference]: Finished difference. Result has 208 places, 402 transitions, 6354 flow [2025-03-04 10:16:59,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6354, PETRI_PLACES=208, PETRI_TRANSITIONS=402} [2025-03-04 10:16:59,080 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 168 predicate places. [2025-03-04 10:16:59,080 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 402 transitions, 6354 flow [2025-03-04 10:16:59,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:59,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:16:59,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:16:59,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 10:16:59,081 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:16:59,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:16:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1805594367, now seen corresponding path program 1 times [2025-03-04 10:16:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:16:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249037214] [2025-03-04 10:16:59,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:16:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:16:59,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:16:59,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:16:59,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:16:59,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:16:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:16:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:16:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249037214] [2025-03-04 10:16:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249037214] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:16:59,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:16:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:16:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382223701] [2025-03-04 10:16:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:16:59,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:16:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:16:59,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:16:59,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:16:59,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:16:59,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 402 transitions, 6354 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:16:59,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:16:59,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:16:59,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:02,711 INFO L124 PetriNetUnfolderBase]: 17024/25691 cut-off events. [2025-03-04 10:17:02,711 INFO L125 PetriNetUnfolderBase]: For 431838/432025 co-relation queries the response was YES. [2025-03-04 10:17:02,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186263 conditions, 25691 events. 17024/25691 cut-off events. For 431838/432025 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 177047 event pairs, 1792 based on Foata normal form. 427/26107 useless extension candidates. Maximal degree in co-relation 186104. Up to 12764 conditions per place. [2025-03-04 10:17:03,066 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 617 selfloop transitions, 108 changer transitions 0/738 dead transitions. [2025-03-04 10:17:03,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 738 transitions, 12570 flow [2025-03-04 10:17:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 10:17:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 10:17:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2025-03-04 10:17:03,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6336336336336337 [2025-03-04 10:17:03,067 INFO L175 Difference]: Start difference. First operand has 208 places, 402 transitions, 6354 flow. Second operand 9 states and 211 transitions. [2025-03-04 10:17:03,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 738 transitions, 12570 flow [2025-03-04 10:17:04,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 738 transitions, 12205 flow, removed 163 selfloop flow, removed 10 redundant places. [2025-03-04 10:17:04,928 INFO L231 Difference]: Finished difference. Result has 207 places, 450 transitions, 7340 flow [2025-03-04 10:17:04,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6079, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7340, PETRI_PLACES=207, PETRI_TRANSITIONS=450} [2025-03-04 10:17:04,929 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2025-03-04 10:17:04,929 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 450 transitions, 7340 flow [2025-03-04 10:17:04,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:04,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:04,929 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:04,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 10:17:04,929 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:17:04,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2086510717, now seen corresponding path program 2 times [2025-03-04 10:17:04,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:04,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123002886] [2025-03-04 10:17:04,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:04,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:04,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-04 10:17:04,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 10:17:04,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:17:04,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123002886] [2025-03-04 10:17:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123002886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:05,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:05,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:17:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51358544] [2025-03-04 10:17:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:05,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:17:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:05,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:17:05,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:17:05,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-04 10:17:05,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 450 transitions, 7340 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:05,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:05,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-04 10:17:05,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:10,075 INFO L124 PetriNetUnfolderBase]: 21519/32396 cut-off events. [2025-03-04 10:17:10,075 INFO L125 PetriNetUnfolderBase]: For 622754/623011 co-relation queries the response was YES. [2025-03-04 10:17:10,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244767 conditions, 32396 events. 21519/32396 cut-off events. For 622754/623011 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 231043 event pairs, 2184 based on Foata normal form. 387/32776 useless extension candidates. Maximal degree in co-relation 238699. Up to 19389 conditions per place. [2025-03-04 10:17:10,696 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 459 selfloop transitions, 183 changer transitions 0/655 dead transitions. [2025-03-04 10:17:10,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 655 transitions, 11372 flow [2025-03-04 10:17:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 10:17:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 10:17:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2025-03-04 10:17:10,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6156156156156156 [2025-03-04 10:17:10,697 INFO L175 Difference]: Start difference. First operand has 207 places, 450 transitions, 7340 flow. Second operand 9 states and 205 transitions. [2025-03-04 10:17:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 655 transitions, 11372 flow [2025-03-04 10:17:13,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 655 transitions, 11138 flow, removed 91 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:13,280 INFO L231 Difference]: Finished difference. Result has 216 places, 506 transitions, 8865 flow [2025-03-04 10:17:13,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8865, PETRI_PLACES=216, PETRI_TRANSITIONS=506} [2025-03-04 10:17:13,280 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2025-03-04 10:17:13,280 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 506 transitions, 8865 flow [2025-03-04 10:17:13,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:13,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:13,281 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:13,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-04 10:17:13,281 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 10:17:13,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash 845415869, now seen corresponding path program 8 times [2025-03-04 10:17:13,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:13,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042601615] [2025-03-04 10:17:13,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:13,286 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-04 10:17:13,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 10:17:13,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:13,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042601615] [2025-03-04 10:17:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042601615] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546009351] [2025-03-04 10:17:14,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:14,716 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) [2025-03-04 10:17:14,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 10:17:14,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-04 10:17:14,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 10:17:14,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:14,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:14,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-04 10:17:14,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:15,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546009351] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:17,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-04 10:17:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225114586] [2025-03-04 10:17:17,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:17,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 10:17:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:17,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 10:17:17,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2025-03-04 10:17:17,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-04 10:17:17,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 506 transitions, 8865 flow. Second operand has 23 states, 23 states have (on average 13.391304347826088) internal successors, (308), 23 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:17,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:17,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-04 10:17:17,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:42,664 INFO L124 PetriNetUnfolderBase]: 79538/117262 cut-off events. [2025-03-04 10:17:42,664 INFO L125 PetriNetUnfolderBase]: For 2250303/2251364 co-relation queries the response was YES. [2025-03-04 10:17:44,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848360 conditions, 117262 events. 79538/117262 cut-off events. For 2250303/2251364 co-relation queries the response was YES. Maximal size of possible extension queue 4738. Compared 918496 event pairs, 3208 based on Foata normal form. 1072/118241 useless extension candidates. Maximal degree in co-relation 826159. Up to 26471 conditions per place. [2025-03-04 10:17:45,404 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 1146 selfloop transitions, 732 changer transitions 201/2091 dead transitions. [2025-03-04 10:17:45,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 2091 transitions, 36037 flow [2025-03-04 10:17:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-04 10:17:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2025-03-04 10:17:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1144 transitions. [2025-03-04 10:17:45,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5725725725725725 [2025-03-04 10:17:45,407 INFO L175 Difference]: Start difference. First operand has 216 places, 506 transitions, 8865 flow. Second operand 54 states and 1144 transitions. [2025-03-04 10:17:45,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 2091 transitions, 36037 flow