./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed 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/pthread/triangular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:56:04,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:56:04,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:56:04,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:56:04,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:56:04,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:56:04,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:56:04,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:56:04,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:56:04,415 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:56:04,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:56:04,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:56:04,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:56:04,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:56:04,416 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:56:04,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:56:04,417 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:56:04,418 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:56:04,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:56:04,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:56:04,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:56:04,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:56:04,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:56:04,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:56:04,419 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 -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2025-03-09 00:56:04,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:56:04,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:56:04,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:56:04,622 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:56:04,622 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:56:04,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2025-03-09 00:56:05,752 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81d82331/372da27853fb4ef78e8e7cd09b979622/FLAGf64c60dc5 [2025-03-09 00:56:06,020 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:56:06,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2025-03-09 00:56:06,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81d82331/372da27853fb4ef78e8e7cd09b979622/FLAGf64c60dc5 [2025-03-09 00:56:06,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81d82331/372da27853fb4ef78e8e7cd09b979622 [2025-03-09 00:56:06,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:56:06,051 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:56:06,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:56:06,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:56:06,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:56:06,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263dd408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06, skipping insertion in model container [2025-03-09 00:56:06,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:56:06,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:56:06,273 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:56:06,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:56:06,324 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:56:06,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06 WrapperNode [2025-03-09 00:56:06,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:56:06,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:56:06,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:56:06,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:56:06,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,348 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-09 00:56:06,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:56:06,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:56:06,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:56:06,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:56:06,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,367 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]. [2025-03-09 00:56:06,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,370 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:56:06,374 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:56:06,374 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:56:06,375 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:56:06,375 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (1/1) ... [2025-03-09 00:56:06,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:56:06,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:06,399 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) [2025-03-09 00:56:06,402 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 [2025-03-09 00:56:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 00:56:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 00:56:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 00:56:06,420 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 00:56:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 00:56:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:56:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 00:56:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 00:56:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:56:06,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:56:06,421 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 00:56:06,504 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:56:06,506 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:56:06,612 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 00:56:06,612 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:56:06,663 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:56:06,663 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:56:06,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:56:06 BoogieIcfgContainer [2025-03-09 00:56:06,663 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:56:06,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:56:06,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:56:06,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:56:06,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:56:06" (1/3) ... [2025-03-09 00:56:06,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcd8c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:56:06, skipping insertion in model container [2025-03-09 00:56:06,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:56:06" (2/3) ... [2025-03-09 00:56:06,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcd8c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:56:06, skipping insertion in model container [2025-03-09 00:56:06,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:56:06" (3/3) ... [2025-03-09 00:56:06,671 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2025-03-09 00:56:06,681 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:56:06,682 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-1.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-09 00:56:06,683 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 00:56:06,719 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:56:06,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-09 00:56:06,772 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-09 00:56:06,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:56:06,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-09 00:56:06,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-09 00:56:06,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-09 00:56:06,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:56:06,796 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;@3b03f2b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:56:06,796 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-09 00:56:06,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:56:06,803 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-09 00:56:06,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:56:06,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:06,804 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:06,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:06,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979287, now seen corresponding path program 1 times [2025-03-09 00:56:06,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413065260] [2025-03-09 00:56:06,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:06,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:56:06,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:56:06,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:06,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:07,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413065260] [2025-03-09 00:56:07,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413065260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:07,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:07,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 00:56:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664765845] [2025-03-09 00:56:07,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:07,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:56:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:07,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:56:07,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:56:07,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:07,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:07,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:07,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:07,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:07,153 INFO L124 PetriNetUnfolderBase]: 185/363 cut-off events. [2025-03-09 00:56:07,154 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 00:56:07,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 363 events. 185/363 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1602 event pairs, 135 based on Foata normal form. 32/390 useless extension candidates. Maximal degree in co-relation 657. Up to 290 conditions per place. [2025-03-09 00:56:07,159 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-09 00:56:07,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-09 00:56:07,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:56:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 00:56:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-09 00:56:07,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-09 00:56:07,170 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-09 00:56:07,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-09 00:56:07,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 00:56:07,174 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-09 00:56:07,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-03-09 00:56:07,181 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-09 00:56:07,182 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-09 00:56:07,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:07,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:07,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:07,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 00:56:07,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:07,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979786, now seen corresponding path program 1 times [2025-03-09 00:56:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:07,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027205359] [2025-03-09 00:56:07,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:07,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:07,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:56:07,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:56:07,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:07,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027205359] [2025-03-09 00:56:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027205359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:07,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:56:07,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652214008] [2025-03-09 00:56:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:07,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:56:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:07,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:56:07,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:56:07,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:07,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:07,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:07,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:07,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:07,590 INFO L124 PetriNetUnfolderBase]: 273/491 cut-off events. [2025-03-09 00:56:07,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:56:07,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 491 events. 273/491 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2024 event pairs, 45 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 925. Up to 181 conditions per place. [2025-03-09 00:56:07,593 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2025-03-09 00:56:07,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2025-03-09 00:56:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:56:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 00:56:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2025-03-09 00:56:07,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-03-09 00:56:07,595 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2025-03-09 00:56:07,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2025-03-09 00:56:07,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 00:56:07,596 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2025-03-09 00:56:07,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2025-03-09 00:56:07,597 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-03-09 00:56:07,597 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2025-03-09 00:56:07,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:07,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:07,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:07,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 00:56:07,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:07,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1591607260, now seen corresponding path program 1 times [2025-03-09 00:56:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:07,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440273005] [2025-03-09 00:56:07,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:07,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:56:07,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:56:07,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:07,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440273005] [2025-03-09 00:56:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440273005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:07,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 00:56:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101918539] [2025-03-09 00:56:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:07,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:56:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:07,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:56:07,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:56:07,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:07,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:07,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:07,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:07,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:07,924 INFO L124 PetriNetUnfolderBase]: 382/707 cut-off events. [2025-03-09 00:56:07,924 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2025-03-09 00:56:07,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 707 events. 382/707 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3107 event pairs, 65 based on Foata normal form. 33/739 useless extension candidates. Maximal degree in co-relation 1594. Up to 246 conditions per place. [2025-03-09 00:56:07,931 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2025-03-09 00:56:07,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2025-03-09 00:56:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 00:56:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 00:56:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-09 00:56:07,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-09 00:56:07,935 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2025-03-09 00:56:07,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2025-03-09 00:56:07,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-09 00:56:07,939 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2025-03-09 00:56:07,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2025-03-09 00:56:07,941 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-03-09 00:56:07,941 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2025-03-09 00:56:07,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:07,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:07,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:07,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 00:56:07,942 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:07,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:07,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1595175136, now seen corresponding path program 2 times [2025-03-09 00:56:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:07,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796988975] [2025-03-09 00:56:07,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:07,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:07,948 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:56:07,950 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:56:07,950 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 00:56:07,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796988975] [2025-03-09 00:56:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796988975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:08,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:08,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 00:56:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198635786] [2025-03-09 00:56:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:08,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:56:08,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:08,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:56:08,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:56:08,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:08,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:08,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:08,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:08,191 INFO L124 PetriNetUnfolderBase]: 328/614 cut-off events. [2025-03-09 00:56:08,191 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2025-03-09 00:56:08,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 614 events. 328/614 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2617 event pairs, 65 based on Foata normal form. 57/670 useless extension candidates. Maximal degree in co-relation 1726. Up to 234 conditions per place. [2025-03-09 00:56:08,194 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2025-03-09 00:56:08,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2025-03-09 00:56:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:56:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 00:56:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-03-09 00:56:08,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-03-09 00:56:08,196 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2025-03-09 00:56:08,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2025-03-09 00:56:08,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-09 00:56:08,199 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2025-03-09 00:56:08,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2025-03-09 00:56:08,200 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-03-09 00:56:08,200 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2025-03-09 00:56:08,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:08,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:08,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 00:56:08,201 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:08,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 29952673, now seen corresponding path program 1 times [2025-03-09 00:56:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769881962] [2025-03-09 00:56:08,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:08,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 00:56:08,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 00:56:08,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:08,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:08,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769881962] [2025-03-09 00:56:08,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769881962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:08,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:08,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:56:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880495916] [2025-03-09 00:56:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:08,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:56:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:08,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:56:08,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:56:08,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:08,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:08,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:08,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:08,513 INFO L124 PetriNetUnfolderBase]: 337/626 cut-off events. [2025-03-09 00:56:08,513 INFO L125 PetriNetUnfolderBase]: For 1712/1724 co-relation queries the response was YES. [2025-03-09 00:56:08,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 626 events. 337/626 cut-off events. For 1712/1724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2657 event pairs, 68 based on Foata normal form. 30/655 useless extension candidates. Maximal degree in co-relation 1929. Up to 237 conditions per place. [2025-03-09 00:56:08,517 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2025-03-09 00:56:08,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2025-03-09 00:56:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 00:56:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 00:56:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-09 00:56:08,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-09 00:56:08,518 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2025-03-09 00:56:08,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2025-03-09 00:56:08,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-09 00:56:08,523 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2025-03-09 00:56:08,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-03-09 00:56:08,524 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-03-09 00:56:08,524 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2025-03-09 00:56:08,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:08,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:08,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 00:56:08,525 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:08,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1774460803, now seen corresponding path program 2 times [2025-03-09 00:56:08,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:08,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908492619] [2025-03-09 00:56:08,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:08,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:08,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-09 00:56:08,533 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 00:56:08,533 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 00:56:08,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908492619] [2025-03-09 00:56:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908492619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:08,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:56:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205532819] [2025-03-09 00:56:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:08,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:56:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:08,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:56:08,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:56:08,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:08,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:08,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:08,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:08,837 INFO L124 PetriNetUnfolderBase]: 508/938 cut-off events. [2025-03-09 00:56:08,838 INFO L125 PetriNetUnfolderBase]: For 3237/3255 co-relation queries the response was YES. [2025-03-09 00:56:08,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3083 conditions, 938 events. 508/938 cut-off events. For 3237/3255 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4321 event pairs, 53 based on Foata normal form. 45/980 useless extension candidates. Maximal degree in co-relation 3059. Up to 253 conditions per place. [2025-03-09 00:56:08,845 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 57 selfloop transitions, 20 changer transitions 23/104 dead transitions. [2025-03-09 00:56:08,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 774 flow [2025-03-09 00:56:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 00:56:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 00:56:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2025-03-09 00:56:08,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-09 00:56:08,847 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 174 transitions. [2025-03-09 00:56:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 774 flow [2025-03-09 00:56:08,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 708 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-03-09 00:56:08,853 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 379 flow [2025-03-09 00:56:08,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2025-03-09 00:56:08,856 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2025-03-09 00:56:08,856 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 379 flow [2025-03-09 00:56:08,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:08,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:08,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 00:56:08,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:08,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1950453345, now seen corresponding path program 3 times [2025-03-09 00:56:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338918581] [2025-03-09 00:56:08,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:56:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:08,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-03-09 00:56:08,868 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 00:56:08,868 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 00:56:08,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338918581] [2025-03-09 00:56:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338918581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:08,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:56:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133865654] [2025-03-09 00:56:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:08,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:56:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:08,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:56:08,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:56:08,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:08,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:08,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:08,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:08,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:09,167 INFO L124 PetriNetUnfolderBase]: 445/836 cut-off events. [2025-03-09 00:56:09,167 INFO L125 PetriNetUnfolderBase]: For 4864/4882 co-relation queries the response was YES. [2025-03-09 00:56:09,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 836 events. 445/836 cut-off events. For 4864/4882 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3772 event pairs, 71 based on Foata normal form. 63/896 useless extension candidates. Maximal degree in co-relation 3134. Up to 223 conditions per place. [2025-03-09 00:56:09,171 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 20 changer transitions 31/99 dead transitions. [2025-03-09 00:56:09,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 899 flow [2025-03-09 00:56:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:56:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 00:56:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-09 00:56:09,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-03-09 00:56:09,172 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 379 flow. Second operand 10 states and 155 transitions. [2025-03-09 00:56:09,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 899 flow [2025-03-09 00:56:09,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 830 flow, removed 25 selfloop flow, removed 5 redundant places. [2025-03-09 00:56:09,180 INFO L231 Difference]: Finished difference. Result has 73 places, 47 transitions, 427 flow [2025-03-09 00:56:09,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2025-03-09 00:56:09,180 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2025-03-09 00:56:09,180 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 427 flow [2025-03-09 00:56:09,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:09,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:09,181 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:09,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 00:56:09,181 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:09,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1345523814, now seen corresponding path program 1 times [2025-03-09 00:56:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:09,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725344340] [2025-03-09 00:56:09,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:09,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:56:09,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:56:09,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:09,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725344340] [2025-03-09 00:56:09,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725344340] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:09,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:09,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:56:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238965722] [2025-03-09 00:56:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:09,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:56:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:09,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:56:09,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:56:09,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:09,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:09,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:09,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:09,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:09,522 INFO L124 PetriNetUnfolderBase]: 454/845 cut-off events. [2025-03-09 00:56:09,522 INFO L125 PetriNetUnfolderBase]: For 5578/5596 co-relation queries the response was YES. [2025-03-09 00:56:09,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 845 events. 454/845 cut-off events. For 5578/5596 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3810 event pairs, 59 based on Foata normal form. 36/878 useless extension candidates. Maximal degree in co-relation 3284. Up to 157 conditions per place. [2025-03-09 00:56:09,527 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 45 selfloop transitions, 26 changer transitions 23/98 dead transitions. [2025-03-09 00:56:09,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 921 flow [2025-03-09 00:56:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:56:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 00:56:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-09 00:56:09,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-03-09 00:56:09,529 INFO L175 Difference]: Start difference. First operand has 73 places, 47 transitions, 427 flow. Second operand 10 states and 155 transitions. [2025-03-09 00:56:09,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 921 flow [2025-03-09 00:56:09,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 839 flow, removed 25 selfloop flow, removed 8 redundant places. [2025-03-09 00:56:09,541 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 501 flow [2025-03-09 00:56:09,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=501, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2025-03-09 00:56:09,542 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2025-03-09 00:56:09,543 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 501 flow [2025-03-09 00:56:09,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:09,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:09,543 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:09,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 00:56:09,544 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:09,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1611396395, now seen corresponding path program 1 times [2025-03-09 00:56:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360128019] [2025-03-09 00:56:09,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:09,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:56:09,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:56:09,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:09,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:09,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360128019] [2025-03-09 00:56:09,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360128019] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:09,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:09,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:56:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612172153] [2025-03-09 00:56:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:09,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:56:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:09,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:56:09,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:56:09,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:09,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 501 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:09,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:09,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:09,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:09,876 INFO L124 PetriNetUnfolderBase]: 490/917 cut-off events. [2025-03-09 00:56:09,876 INFO L125 PetriNetUnfolderBase]: For 7027/7045 co-relation queries the response was YES. [2025-03-09 00:56:09,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3767 conditions, 917 events. 490/917 cut-off events. For 7027/7045 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4218 event pairs, 161 based on Foata normal form. 45/961 useless extension candidates. Maximal degree in co-relation 3734. Up to 540 conditions per place. [2025-03-09 00:56:09,882 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 13 changer transitions 31/104 dead transitions. [2025-03-09 00:56:09,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 1047 flow [2025-03-09 00:56:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 00:56:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 00:56:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-09 00:56:09,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-09 00:56:09,883 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 501 flow. Second operand 11 states and 168 transitions. [2025-03-09 00:56:09,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 1047 flow [2025-03-09 00:56:09,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 104 transitions, 969 flow, removed 22 selfloop flow, removed 7 redundant places. [2025-03-09 00:56:09,895 INFO L231 Difference]: Finished difference. Result has 81 places, 52 transitions, 519 flow [2025-03-09 00:56:09,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=519, PETRI_PLACES=81, PETRI_TRANSITIONS=52} [2025-03-09 00:56:09,896 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-03-09 00:56:09,896 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 52 transitions, 519 flow [2025-03-09 00:56:09,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:09,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:09,897 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:09,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 00:56:09,897 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:09,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash -833258891, now seen corresponding path program 2 times [2025-03-09 00:56:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:09,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964408031] [2025-03-09 00:56:09,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:09,904 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:56:09,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:56:09,909 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 00:56:09,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964408031] [2025-03-09 00:56:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964408031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:10,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:10,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:56:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159667283] [2025-03-09 00:56:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:10,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:56:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:10,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:56:10,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:56:10,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:10,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 52 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:10,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:10,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:10,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:10,286 INFO L124 PetriNetUnfolderBase]: 643/1211 cut-off events. [2025-03-09 00:56:10,286 INFO L125 PetriNetUnfolderBase]: For 12283/12301 co-relation queries the response was YES. [2025-03-09 00:56:10,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 1211 events. 643/1211 cut-off events. For 12283/12301 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5898 event pairs, 134 based on Foata normal form. 45/1255 useless extension candidates. Maximal degree in co-relation 5327. Up to 465 conditions per place. [2025-03-09 00:56:10,294 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 23 changer transitions 31/134 dead transitions. [2025-03-09 00:56:10,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 134 transitions, 1387 flow [2025-03-09 00:56:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 00:56:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 00:56:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2025-03-09 00:56:10,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-09 00:56:10,296 INFO L175 Difference]: Start difference. First operand has 81 places, 52 transitions, 519 flow. Second operand 15 states and 232 transitions. [2025-03-09 00:56:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 134 transitions, 1387 flow [2025-03-09 00:56:10,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 1219 flow, removed 73 selfloop flow, removed 8 redundant places. [2025-03-09 00:56:10,310 INFO L231 Difference]: Finished difference. Result has 91 places, 58 transitions, 635 flow [2025-03-09 00:56:10,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=635, PETRI_PLACES=91, PETRI_TRANSITIONS=58} [2025-03-09 00:56:10,311 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2025-03-09 00:56:10,311 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 58 transitions, 635 flow [2025-03-09 00:56:10,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:10,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:10,312 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:10,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 00:56:10,312 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:10,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -836826767, now seen corresponding path program 3 times [2025-03-09 00:56:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:10,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785078585] [2025-03-09 00:56:10,313 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:56:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:10,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:56:10,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:56:10,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 00:56:10,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:10,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:10,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785078585] [2025-03-09 00:56:10,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785078585] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:10,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:56:10,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:56:10,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900790286] [2025-03-09 00:56:10,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:10,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:56:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:10,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:56:10,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:56:10,412 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:10,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 58 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:10,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:10,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:10,673 INFO L124 PetriNetUnfolderBase]: 580/1094 cut-off events. [2025-03-09 00:56:10,674 INFO L125 PetriNetUnfolderBase]: For 12793/12811 co-relation queries the response was YES. [2025-03-09 00:56:10,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 1094 events. 580/1094 cut-off events. For 12793/12811 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5248 event pairs, 140 based on Foata normal form. 63/1156 useless extension candidates. Maximal degree in co-relation 4976. Up to 435 conditions per place. [2025-03-09 00:56:10,680 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 24 changer transitions 39/131 dead transitions. [2025-03-09 00:56:10,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 1443 flow [2025-03-09 00:56:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 00:56:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 00:56:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 215 transitions. [2025-03-09 00:56:10,682 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295566502463054 [2025-03-09 00:56:10,682 INFO L175 Difference]: Start difference. First operand has 91 places, 58 transitions, 635 flow. Second operand 14 states and 215 transitions. [2025-03-09 00:56:10,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 1443 flow [2025-03-09 00:56:10,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1275 flow, removed 68 selfloop flow, removed 10 redundant places. [2025-03-09 00:56:10,699 INFO L231 Difference]: Finished difference. Result has 96 places, 59 transitions, 638 flow [2025-03-09 00:56:10,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=638, PETRI_PLACES=96, PETRI_TRANSITIONS=59} [2025-03-09 00:56:10,700 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2025-03-09 00:56:10,700 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 59 transitions, 638 flow [2025-03-09 00:56:10,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:10,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:10,701 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:10,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 00:56:10,701 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:10,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1779029952, now seen corresponding path program 1 times [2025-03-09 00:56:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:10,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725693852] [2025-03-09 00:56:10,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:10,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 00:56:10,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 00:56:10,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:10,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:10,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:10,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725693852] [2025-03-09 00:56:10,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725693852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:10,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432922117] [2025-03-09 00:56:10,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:56:10,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:10,793 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) [2025-03-09 00:56:10,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:56:10,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 00:56:10,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 00:56:10,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:10,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:10,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 00:56:10,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:10,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:11,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432922117] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:11,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:11,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-03-09 00:56:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175910968] [2025-03-09 00:56:11,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:11,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:56:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:11,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:56:11,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:56:11,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:11,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 59 transitions, 638 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:11,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:11,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:11,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:11,576 INFO L124 PetriNetUnfolderBase]: 877/1649 cut-off events. [2025-03-09 00:56:11,577 INFO L125 PetriNetUnfolderBase]: For 24500/24518 co-relation queries the response was YES. [2025-03-09 00:56:11,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8250 conditions, 1649 events. 877/1649 cut-off events. For 24500/24518 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8074 event pairs, 65 based on Foata normal form. 81/1727 useless extension candidates. Maximal degree in co-relation 8208. Up to 312 conditions per place. [2025-03-09 00:56:11,591 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 91 selfloop transitions, 46 changer transitions 67/208 dead transitions. [2025-03-09 00:56:11,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 208 transitions, 2376 flow [2025-03-09 00:56:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 00:56:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-09 00:56:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 384 transitions. [2025-03-09 00:56:11,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296551724137931 [2025-03-09 00:56:11,593 INFO L175 Difference]: Start difference. First operand has 96 places, 59 transitions, 638 flow. Second operand 25 states and 384 transitions. [2025-03-09 00:56:11,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 208 transitions, 2376 flow [2025-03-09 00:56:11,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 208 transitions, 2192 flow, removed 72 selfloop flow, removed 12 redundant places. [2025-03-09 00:56:11,624 INFO L231 Difference]: Finished difference. Result has 120 places, 69 transitions, 965 flow [2025-03-09 00:56:11,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=965, PETRI_PLACES=120, PETRI_TRANSITIONS=69} [2025-03-09 00:56:11,624 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2025-03-09 00:56:11,624 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 69 transitions, 965 flow [2025-03-09 00:56:11,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:11,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:11,625 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:11,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:56:11,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-09 00:56:11,826 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:11,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash -230915460, now seen corresponding path program 2 times [2025-03-09 00:56:11,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:11,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364931999] [2025-03-09 00:56:11,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:11,832 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 00:56:11,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 00:56:11,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:56:11,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:11,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:11,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364931999] [2025-03-09 00:56:11,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364931999] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:11,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465337828] [2025-03-09 00:56:11,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:11,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:11,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:11,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:56:11,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 00:56:11,959 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 00:56:11,960 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:56:11,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:11,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 00:56:11,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:11,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465337828] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:12,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-03-09 00:56:12,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49853805] [2025-03-09 00:56:12,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:12,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 00:56:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:12,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 00:56:12,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-03-09 00:56:12,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:12,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 69 transitions, 965 flow. Second operand has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:12,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:12,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:12,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:12,713 INFO L124 PetriNetUnfolderBase]: 994/1880 cut-off events. [2025-03-09 00:56:12,713 INFO L125 PetriNetUnfolderBase]: For 59840/59858 co-relation queries the response was YES. [2025-03-09 00:56:12,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11660 conditions, 1880 events. 994/1880 cut-off events. For 59840/59858 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9276 event pairs, 38 based on Foata normal form. 117/1996 useless extension candidates. Maximal degree in co-relation 11606. Up to 378 conditions per place. [2025-03-09 00:56:12,728 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 88 selfloop transitions, 62 changer transitions 89/243 dead transitions. [2025-03-09 00:56:12,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 243 transitions, 3656 flow [2025-03-09 00:56:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 00:56:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 00:56:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 429 transitions. [2025-03-09 00:56:12,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5283251231527094 [2025-03-09 00:56:12,730 INFO L175 Difference]: Start difference. First operand has 120 places, 69 transitions, 965 flow. Second operand 28 states and 429 transitions. [2025-03-09 00:56:12,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 243 transitions, 3656 flow [2025-03-09 00:56:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 243 transitions, 2932 flow, removed 328 selfloop flow, removed 19 redundant places. [2025-03-09 00:56:12,780 INFO L231 Difference]: Finished difference. Result has 138 places, 86 transitions, 1341 flow [2025-03-09 00:56:12,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1341, PETRI_PLACES=138, PETRI_TRANSITIONS=86} [2025-03-09 00:56:12,780 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2025-03-09 00:56:12,780 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 86 transitions, 1341 flow [2025-03-09 00:56:12,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:12,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:12,781 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:12,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 00:56:12,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 00:56:12,985 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:12,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1515904808, now seen corresponding path program 3 times [2025-03-09 00:56:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459932434] [2025-03-09 00:56:12,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:56:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:12,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-03-09 00:56:12,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 00:56:13,000 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-09 00:56:13,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459932434] [2025-03-09 00:56:13,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459932434] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542033386] [2025-03-09 00:56:13,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:56:13,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:13,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:13,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:56:13,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-03-09 00:56:13,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 00:56:13,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-09 00:56:13,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:13,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 00:56:13,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:13,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542033386] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:13,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:13,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2025-03-09 00:56:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545698349] [2025-03-09 00:56:13,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:13,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 00:56:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:13,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 00:56:13,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2025-03-09 00:56:13,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:13,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 86 transitions, 1341 flow. Second operand has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:13,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:13,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:13,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:14,254 INFO L124 PetriNetUnfolderBase]: 1408/2613 cut-off events. [2025-03-09 00:56:14,254 INFO L125 PetriNetUnfolderBase]: For 101564/101570 co-relation queries the response was YES. [2025-03-09 00:56:14,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17557 conditions, 2613 events. 1408/2613 cut-off events. For 101564/101570 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13259 event pairs, 42 based on Foata normal form. 60/2672 useless extension candidates. Maximal degree in co-relation 17496. Up to 546 conditions per place. [2025-03-09 00:56:14,279 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 113 selfloop transitions, 96 changer transitions 91/304 dead transitions. [2025-03-09 00:56:14,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 304 transitions, 4982 flow [2025-03-09 00:56:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-09 00:56:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-09 00:56:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 519 transitions. [2025-03-09 00:56:14,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.526369168356998 [2025-03-09 00:56:14,281 INFO L175 Difference]: Start difference. First operand has 138 places, 86 transitions, 1341 flow. Second operand 34 states and 519 transitions. [2025-03-09 00:56:14,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 304 transitions, 4982 flow [2025-03-09 00:56:14,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 304 transitions, 4104 flow, removed 402 selfloop flow, removed 20 redundant places. [2025-03-09 00:56:14,366 INFO L231 Difference]: Finished difference. Result has 160 places, 120 transitions, 1999 flow [2025-03-09 00:56:14,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1999, PETRI_PLACES=160, PETRI_TRANSITIONS=120} [2025-03-09 00:56:14,367 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2025-03-09 00:56:14,367 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 120 transitions, 1999 flow [2025-03-09 00:56:14,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:14,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:14,367 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:14,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:56:14,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:14,572 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:14,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1351637643, now seen corresponding path program 4 times [2025-03-09 00:56:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:14,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616170858] [2025-03-09 00:56:14,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 00:56:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:14,581 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-03-09 00:56:14,588 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:14,588 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 00:56:14,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:14,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:14,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616170858] [2025-03-09 00:56:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616170858] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:14,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388433962] [2025-03-09 00:56:14,787 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 00:56:14,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:14,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:14,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:14,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:56:14,818 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-03-09 00:56:14,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:14,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 00:56:14,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:14,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:14,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:14,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388433962] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:15,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2025-03-09 00:56:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961731230] [2025-03-09 00:56:15,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:15,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:56:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:15,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:56:15,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:56:15,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:15,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 120 transitions, 1999 flow. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:15,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:15,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:15,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:15,551 INFO L124 PetriNetUnfolderBase]: 1390/2640 cut-off events. [2025-03-09 00:56:15,552 INFO L125 PetriNetUnfolderBase]: For 125943/125949 co-relation queries the response was YES. [2025-03-09 00:56:15,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17658 conditions, 2640 events. 1390/2640 cut-off events. For 125943/125949 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13914 event pairs, 465 based on Foata normal form. 33/2670 useless extension candidates. Maximal degree in co-relation 17592. Up to 1609 conditions per place. [2025-03-09 00:56:15,574 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 131 selfloop transitions, 36 changer transitions 47/218 dead transitions. [2025-03-09 00:56:15,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 218 transitions, 3845 flow [2025-03-09 00:56:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 00:56:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 00:56:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 282 transitions. [2025-03-09 00:56:15,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5117967332123412 [2025-03-09 00:56:15,577 INFO L175 Difference]: Start difference. First operand has 160 places, 120 transitions, 1999 flow. Second operand 19 states and 282 transitions. [2025-03-09 00:56:15,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 218 transitions, 3845 flow [2025-03-09 00:56:15,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 218 transitions, 3276 flow, removed 261 selfloop flow, removed 17 redundant places. [2025-03-09 00:56:15,706 INFO L231 Difference]: Finished difference. Result has 160 places, 124 transitions, 1834 flow [2025-03-09 00:56:15,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1834, PETRI_PLACES=160, PETRI_TRANSITIONS=124} [2025-03-09 00:56:15,707 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2025-03-09 00:56:15,707 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 124 transitions, 1834 flow [2025-03-09 00:56:15,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:15,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:15,708 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:15,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:56:15,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 00:56:15,912 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:15,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:15,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1561410247, now seen corresponding path program 5 times [2025-03-09 00:56:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208710518] [2025-03-09 00:56:15,913 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 00:56:15,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:15,918 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 3 equivalence classes. [2025-03-09 00:56:15,925 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:15,925 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 00:56:15,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:16,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:16,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208710518] [2025-03-09 00:56:16,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208710518] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:16,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457999413] [2025-03-09 00:56:16,096 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 00:56:16,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:16,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:16,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:16,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:56:16,127 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 3 equivalence classes. [2025-03-09 00:56:16,138 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:16,138 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 00:56:16,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:16,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:16,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:16,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457999413] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:16,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2025-03-09 00:56:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513539724] [2025-03-09 00:56:16,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:16,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 00:56:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:16,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 00:56:16,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-03-09 00:56:16,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:16,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 124 transitions, 1834 flow. Second operand has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:16,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:16,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:16,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:16,936 INFO L124 PetriNetUnfolderBase]: 1552/3018 cut-off events. [2025-03-09 00:56:16,936 INFO L125 PetriNetUnfolderBase]: For 128079/128085 co-relation queries the response was YES. [2025-03-09 00:56:16,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19009 conditions, 3018 events. 1552/3018 cut-off events. For 128079/128085 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 16835 event pairs, 378 based on Foata normal form. 33/3050 useless extension candidates. Maximal degree in co-relation 18946. Up to 1435 conditions per place. [2025-03-09 00:56:16,955 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 131 selfloop transitions, 63 changer transitions 53/251 dead transitions. [2025-03-09 00:56:16,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 251 transitions, 4019 flow [2025-03-09 00:56:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 00:56:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-09 00:56:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 327 transitions. [2025-03-09 00:56:16,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.512539184952978 [2025-03-09 00:56:16,960 INFO L175 Difference]: Start difference. First operand has 160 places, 124 transitions, 1834 flow. Second operand 22 states and 327 transitions. [2025-03-09 00:56:16,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 251 transitions, 4019 flow [2025-03-09 00:56:17,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 251 transitions, 3831 flow, removed 70 selfloop flow, removed 12 redundant places. [2025-03-09 00:56:17,075 INFO L231 Difference]: Finished difference. Result has 178 places, 143 transitions, 2348 flow [2025-03-09 00:56:17,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2348, PETRI_PLACES=178, PETRI_TRANSITIONS=143} [2025-03-09 00:56:17,076 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2025-03-09 00:56:17,079 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 143 transitions, 2348 flow [2025-03-09 00:56:17,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:17,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:17,080 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:56:17,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 00:56:17,280 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:17,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:17,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1031473857, now seen corresponding path program 6 times [2025-03-09 00:56:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:17,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126826253] [2025-03-09 00:56:17,281 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 00:56:17,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:17,284 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 4 equivalence classes. [2025-03-09 00:56:17,291 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:17,291 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-09 00:56:17,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126826253] [2025-03-09 00:56:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126826253] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032200525] [2025-03-09 00:56:17,439 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 00:56:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:17,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:17,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:56:17,474 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 4 equivalence classes. [2025-03-09 00:56:17,486 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:17,486 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-09 00:56:17,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:17,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:17,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:17,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032200525] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:17,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2025-03-09 00:56:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604147100] [2025-03-09 00:56:17,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:17,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:56:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:17,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:56:17,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:56:17,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:17,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 143 transitions, 2348 flow. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:17,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:17,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:17,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:18,178 INFO L124 PetriNetUnfolderBase]: 1624/3186 cut-off events. [2025-03-09 00:56:18,178 INFO L125 PetriNetUnfolderBase]: For 153437/153443 co-relation queries the response was YES. [2025-03-09 00:56:18,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21031 conditions, 3186 events. 1624/3186 cut-off events. For 153437/153443 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 18031 event pairs, 315 based on Foata normal form. 33/3216 useless extension candidates. Maximal degree in co-relation 20959. Up to 1153 conditions per place. [2025-03-09 00:56:18,202 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 117 selfloop transitions, 84 changer transitions 51/256 dead transitions. [2025-03-09 00:56:18,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 256 transitions, 4468 flow [2025-03-09 00:56:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 00:56:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 00:56:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 313 transitions. [2025-03-09 00:56:18,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5139573070607554 [2025-03-09 00:56:18,203 INFO L175 Difference]: Start difference. First operand has 178 places, 143 transitions, 2348 flow. Second operand 21 states and 313 transitions. [2025-03-09 00:56:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 256 transitions, 4468 flow [2025-03-09 00:56:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 256 transitions, 4202 flow, removed 111 selfloop flow, removed 11 redundant places. [2025-03-09 00:56:18,455 INFO L231 Difference]: Finished difference. Result has 191 places, 151 transitions, 2620 flow [2025-03-09 00:56:18,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2620, PETRI_PLACES=191, PETRI_TRANSITIONS=151} [2025-03-09 00:56:18,456 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2025-03-09 00:56:18,456 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 151 transitions, 2620 flow [2025-03-09 00:56:18,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:18,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:18,456 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:18,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:56:18,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 00:56:18,658 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:18,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1289043299, now seen corresponding path program 7 times [2025-03-09 00:56:18,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:18,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401122657] [2025-03-09 00:56:18,658 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 00:56:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:18,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 00:56:18,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:18,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:18,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:18,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401122657] [2025-03-09 00:56:18,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401122657] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568650681] [2025-03-09 00:56:18,818 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 00:56:18,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:18,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:18,820 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:18,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:56:18,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 00:56:18,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:18,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:18,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:18,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:18,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:18,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568650681] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:19,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:19,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2025-03-09 00:56:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223495087] [2025-03-09 00:56:19,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:19,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 00:56:19,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:19,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 00:56:19,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-09 00:56:19,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:19,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 151 transitions, 2620 flow. Second operand has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:19,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:19,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:19,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:19,743 INFO L124 PetriNetUnfolderBase]: 1750/3477 cut-off events. [2025-03-09 00:56:19,743 INFO L125 PetriNetUnfolderBase]: For 175558/175564 co-relation queries the response was YES. [2025-03-09 00:56:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23417 conditions, 3477 events. 1750/3477 cut-off events. For 175558/175564 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20479 event pairs, 246 based on Foata normal form. 33/3509 useless extension candidates. Maximal degree in co-relation 23341. Up to 997 conditions per place. [2025-03-09 00:56:19,773 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 119 selfloop transitions, 106 changer transitions 57/286 dead transitions. [2025-03-09 00:56:19,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 286 transitions, 5088 flow [2025-03-09 00:56:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 00:56:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 00:56:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 359 transitions. [2025-03-09 00:56:19,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158045977011494 [2025-03-09 00:56:19,775 INFO L175 Difference]: Start difference. First operand has 191 places, 151 transitions, 2620 flow. Second operand 24 states and 359 transitions. [2025-03-09 00:56:19,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 286 transitions, 5088 flow [2025-03-09 00:56:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 286 transitions, 4722 flow, removed 140 selfloop flow, removed 13 redundant places. [2025-03-09 00:56:19,999 INFO L231 Difference]: Finished difference. Result has 208 places, 166 transitions, 3138 flow [2025-03-09 00:56:19,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3138, PETRI_PLACES=208, PETRI_TRANSITIONS=166} [2025-03-09 00:56:20,000 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2025-03-09 00:56:20,000 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 166 transitions, 3138 flow [2025-03-09 00:56:20,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:20,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:20,000 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:20,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 00:56:20,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:20,200 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:20,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash -914303887, now seen corresponding path program 8 times [2025-03-09 00:56:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787556861] [2025-03-09 00:56:20,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:20,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:20,204 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-09 00:56:20,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:20,207 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:56:20,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:20,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787556861] [2025-03-09 00:56:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787556861] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824283062] [2025-03-09 00:56:20,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:20,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:20,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:20,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:56:20,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-09 00:56:20,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:20,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:56:20,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:20,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:20,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:20,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:20,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824283062] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:20,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:20,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2025-03-09 00:56:20,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804173715] [2025-03-09 00:56:20,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:20,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:56:20,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:20,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:56:20,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:56:20,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:20,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 166 transitions, 3138 flow. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:20,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:20,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:20,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:21,128 INFO L124 PetriNetUnfolderBase]: 1858/3723 cut-off events. [2025-03-09 00:56:21,128 INFO L125 PetriNetUnfolderBase]: For 190644/190650 co-relation queries the response was YES. [2025-03-09 00:56:21,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25424 conditions, 3723 events. 1858/3723 cut-off events. For 190644/190650 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22594 event pairs, 237 based on Foata normal form. 33/3753 useless extension candidates. Maximal degree in co-relation 25341. Up to 859 conditions per place. [2025-03-09 00:56:21,154 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 115 selfloop transitions, 122 changer transitions 55/296 dead transitions. [2025-03-09 00:56:21,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 296 transitions, 5638 flow [2025-03-09 00:56:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 00:56:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-09 00:56:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 345 transitions. [2025-03-09 00:56:21,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2025-03-09 00:56:21,156 INFO L175 Difference]: Start difference. First operand has 208 places, 166 transitions, 3138 flow. Second operand 23 states and 345 transitions. [2025-03-09 00:56:21,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 296 transitions, 5638 flow [2025-03-09 00:56:21,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 296 transitions, 5257 flow, removed 134 selfloop flow, removed 16 redundant places. [2025-03-09 00:56:21,460 INFO L231 Difference]: Finished difference. Result has 220 places, 179 transitions, 3590 flow [2025-03-09 00:56:21,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3590, PETRI_PLACES=220, PETRI_TRANSITIONS=179} [2025-03-09 00:56:21,461 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2025-03-09 00:56:21,461 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 179 transitions, 3590 flow [2025-03-09 00:56:21,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:21,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:21,461 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:21,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:56:21,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:21,662 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:21,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1804726085, now seen corresponding path program 9 times [2025-03-09 00:56:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:21,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226789068] [2025-03-09 00:56:21,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:56:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:21,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 40 statements into 3 equivalence classes. [2025-03-09 00:56:21,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:21,673 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-09 00:56:21,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:21,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:21,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226789068] [2025-03-09 00:56:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226789068] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:21,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533234828] [2025-03-09 00:56:21,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:56:21,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:21,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:21,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:21,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:56:21,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 40 statements into 3 equivalence classes. [2025-03-09 00:56:21,864 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:21,864 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-09 00:56:21,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:21,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:21,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:21,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:22,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533234828] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:22,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:22,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2025-03-09 00:56:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830551186] [2025-03-09 00:56:22,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:22,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 00:56:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:22,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 00:56:22,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-03-09 00:56:22,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:22,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 179 transitions, 3590 flow. Second operand has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:22,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:22,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:22,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:22,799 INFO L124 PetriNetUnfolderBase]: 1948/3927 cut-off events. [2025-03-09 00:56:22,799 INFO L125 PetriNetUnfolderBase]: For 216923/216929 co-relation queries the response was YES. [2025-03-09 00:56:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27560 conditions, 3927 events. 1948/3927 cut-off events. For 216923/216929 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 24279 event pairs, 174 based on Foata normal form. 33/3959 useless extension candidates. Maximal degree in co-relation 27471. Up to 900 conditions per place. [2025-03-09 00:56:22,825 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 117 selfloop transitions, 140 changer transitions 61/322 dead transitions. [2025-03-09 00:56:22,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 322 transitions, 6242 flow [2025-03-09 00:56:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 00:56:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-09 00:56:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 391 transitions. [2025-03-09 00:56:22,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185676392572944 [2025-03-09 00:56:22,827 INFO L175 Difference]: Start difference. First operand has 220 places, 179 transitions, 3590 flow. Second operand 26 states and 391 transitions. [2025-03-09 00:56:22,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 322 transitions, 6242 flow [2025-03-09 00:56:23,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 322 transitions, 5762 flow, removed 169 selfloop flow, removed 16 redundant places. [2025-03-09 00:56:23,138 INFO L231 Difference]: Finished difference. Result has 234 places, 190 transitions, 3973 flow [2025-03-09 00:56:23,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3973, PETRI_PLACES=234, PETRI_TRANSITIONS=190} [2025-03-09 00:56:23,138 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2025-03-09 00:56:23,138 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 190 transitions, 3973 flow [2025-03-09 00:56:23,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:23,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:23,138 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:23,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 00:56:23,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:23,339 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:23,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 689287621, now seen corresponding path program 10 times [2025-03-09 00:56:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79537489] [2025-03-09 00:56:23,340 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 00:56:23,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:23,343 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-03-09 00:56:23,345 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:23,345 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 00:56:23,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:23,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79537489] [2025-03-09 00:56:23,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79537489] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461606684] [2025-03-09 00:56:23,470 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 00:56:23,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:23,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:23,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:23,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:56:23,501 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-03-09 00:56:23,511 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:23,511 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 00:56:23,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:23,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:23,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:23,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461606684] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:23,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:23,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2025-03-09 00:56:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242941322] [2025-03-09 00:56:23,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:23,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:56:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:23,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:56:23,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:56:23,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:23,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 190 transitions, 3973 flow. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:23,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:23,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:24,309 INFO L124 PetriNetUnfolderBase]: 2020/4089 cut-off events. [2025-03-09 00:56:24,309 INFO L125 PetriNetUnfolderBase]: For 234172/234178 co-relation queries the response was YES. [2025-03-09 00:56:24,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29103 conditions, 4089 events. 2020/4089 cut-off events. For 234172/234178 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25649 event pairs, 153 based on Foata normal form. 33/4119 useless extension candidates. Maximal degree in co-relation 29009. Up to 936 conditions per place. [2025-03-09 00:56:24,338 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 113 selfloop transitions, 152 changer transitions 59/328 dead transitions. [2025-03-09 00:56:24,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 328 transitions, 6671 flow [2025-03-09 00:56:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 00:56:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-09 00:56:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 377 transitions. [2025-03-09 00:56:24,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-03-09 00:56:24,339 INFO L175 Difference]: Start difference. First operand has 234 places, 190 transitions, 3973 flow. Second operand 25 states and 377 transitions. [2025-03-09 00:56:24,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 328 transitions, 6671 flow [2025-03-09 00:56:24,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 328 transitions, 6163 flow, removed 163 selfloop flow, removed 20 redundant places. [2025-03-09 00:56:24,687 INFO L231 Difference]: Finished difference. Result has 242 places, 199 transitions, 4296 flow [2025-03-09 00:56:24,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4296, PETRI_PLACES=242, PETRI_TRANSITIONS=199} [2025-03-09 00:56:24,688 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2025-03-09 00:56:24,688 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 199 transitions, 4296 flow [2025-03-09 00:56:24,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:24,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:24,688 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:24,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 00:56:24,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-09 00:56:24,888 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:24,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash 155700545, now seen corresponding path program 11 times [2025-03-09 00:56:24,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:24,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206848534] [2025-03-09 00:56:24,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 00:56:24,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:24,892 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 4 equivalence classes. [2025-03-09 00:56:24,895 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:24,895 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-09 00:56:24,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:25,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:25,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206848534] [2025-03-09 00:56:25,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206848534] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:25,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282480088] [2025-03-09 00:56:25,047 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 00:56:25,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:25,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:25,050 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:56:25,079 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 4 equivalence classes. [2025-03-09 00:56:25,091 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:25,091 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-09 00:56:25,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:25,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:25,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:25,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282480088] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:25,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:25,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2025-03-09 00:56:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622934977] [2025-03-09 00:56:25,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:25,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 00:56:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:25,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 00:56:25,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2025-03-09 00:56:25,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:25,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 199 transitions, 4296 flow. Second operand has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:25,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:25,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:25,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:26,094 INFO L124 PetriNetUnfolderBase]: 2119/4296 cut-off events. [2025-03-09 00:56:26,094 INFO L125 PetriNetUnfolderBase]: For 253519/253525 co-relation queries the response was YES. [2025-03-09 00:56:26,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30838 conditions, 4296 events. 2119/4296 cut-off events. For 253519/253525 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 27212 event pairs, 84 based on Foata normal form. 33/4328 useless extension candidates. Maximal degree in co-relation 30740. Up to 978 conditions per place. [2025-03-09 00:56:26,130 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 118 selfloop transitions, 168 changer transitions 63/353 dead transitions. [2025-03-09 00:56:26,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 353 transitions, 7141 flow [2025-03-09 00:56:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 00:56:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 00:56:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 423 transitions. [2025-03-09 00:56:26,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.520935960591133 [2025-03-09 00:56:26,132 INFO L175 Difference]: Start difference. First operand has 242 places, 199 transitions, 4296 flow. Second operand 28 states and 423 transitions. [2025-03-09 00:56:26,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 353 transitions, 7141 flow [2025-03-09 00:56:26,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 353 transitions, 6595 flow, removed 164 selfloop flow, removed 20 redundant places. [2025-03-09 00:56:26,565 INFO L231 Difference]: Finished difference. Result has 253 places, 209 transitions, 4598 flow [2025-03-09 00:56:26,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4598, PETRI_PLACES=253, PETRI_TRANSITIONS=209} [2025-03-09 00:56:26,566 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2025-03-09 00:56:26,566 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 209 transitions, 4598 flow [2025-03-09 00:56:26,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:26,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:26,566 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:26,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 00:56:26,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-09 00:56:26,767 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:26,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:26,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1214405775, now seen corresponding path program 12 times [2025-03-09 00:56:26,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:26,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343246613] [2025-03-09 00:56:26,767 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 00:56:26,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:26,770 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 6 equivalence classes. [2025-03-09 00:56:26,775 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:26,775 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-09 00:56:26,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343246613] [2025-03-09 00:56:26,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343246613] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054852959] [2025-03-09 00:56:26,880 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 00:56:26,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:26,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:26,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:56:26,909 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 6 equivalence classes. [2025-03-09 00:56:26,921 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:26,922 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-09 00:56:26,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:26,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:26,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:26,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:27,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054852959] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:27,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:27,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2025-03-09 00:56:27,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743962212] [2025-03-09 00:56:27,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:27,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:56:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:27,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:56:27,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:56:27,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:27,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 209 transitions, 4598 flow. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:27,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:27,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:27,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:27,908 INFO L124 PetriNetUnfolderBase]: 2290/4617 cut-off events. [2025-03-09 00:56:27,909 INFO L125 PetriNetUnfolderBase]: For 291494/291500 co-relation queries the response was YES. [2025-03-09 00:56:27,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34228 conditions, 4617 events. 2290/4617 cut-off events. For 291494/291500 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 29392 event pairs, 81 based on Foata normal form. 33/4647 useless extension candidates. Maximal degree in co-relation 34126. Up to 1044 conditions per place. [2025-03-09 00:56:27,949 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 127 selfloop transitions, 176 changer transitions 55/362 dead transitions. [2025-03-09 00:56:27,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 362 transitions, 7694 flow [2025-03-09 00:56:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 00:56:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-09 00:56:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 413 transitions. [2025-03-09 00:56:27,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5274584929757343 [2025-03-09 00:56:27,950 INFO L175 Difference]: Start difference. First operand has 253 places, 209 transitions, 4598 flow. Second operand 27 states and 413 transitions. [2025-03-09 00:56:27,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 362 transitions, 7694 flow [2025-03-09 00:56:28,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 362 transitions, 7133 flow, removed 179 selfloop flow, removed 21 redundant places. [2025-03-09 00:56:28,454 INFO L231 Difference]: Finished difference. Result has 262 places, 217 transitions, 4989 flow [2025-03-09 00:56:28,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4195, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4989, PETRI_PLACES=262, PETRI_TRANSITIONS=217} [2025-03-09 00:56:28,455 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2025-03-09 00:56:28,455 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 217 transitions, 4989 flow [2025-03-09 00:56:28,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:28,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:28,455 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:28,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 00:56:28,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-09 00:56:28,656 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:28,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -22242259, now seen corresponding path program 13 times [2025-03-09 00:56:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283891256] [2025-03-09 00:56:28,656 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 00:56:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:28,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 00:56:28,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:28,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:28,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283891256] [2025-03-09 00:56:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283891256] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259833469] [2025-03-09 00:56:28,763 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 00:56:28,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:28,765 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:28,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:56:28,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 00:56:28,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 00:56:28,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:56:28,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:28,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:56:28,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:28,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:56:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:56:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259833469] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:56:28,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:56:28,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2025-03-09 00:56:28,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164139263] [2025-03-09 00:56:28,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:56:28,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 00:56:28,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:28,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 00:56:28,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-03-09 00:56:28,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:28,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 217 transitions, 4989 flow. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:28,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:28,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:28,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:29,983 INFO L124 PetriNetUnfolderBase]: 2236/4533 cut-off events. [2025-03-09 00:56:29,983 INFO L125 PetriNetUnfolderBase]: For 305913/305919 co-relation queries the response was YES. [2025-03-09 00:56:30,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34219 conditions, 4533 events. 2236/4533 cut-off events. For 305913/305919 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28936 event pairs, 78 based on Foata normal form. 51/4583 useless extension candidates. Maximal degree in co-relation 34112. Up to 1020 conditions per place. [2025-03-09 00:56:30,027 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 118 selfloop transitions, 179 changer transitions 67/368 dead transitions. [2025-03-09 00:56:30,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 368 transitions, 8003 flow [2025-03-09 00:56:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 00:56:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 00:56:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2025-03-09 00:56:30,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2025-03-09 00:56:30,028 INFO L175 Difference]: Start difference. First operand has 262 places, 217 transitions, 4989 flow. Second operand 28 states and 425 transitions. [2025-03-09 00:56:30,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 368 transitions, 8003 flow [2025-03-09 00:56:30,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 368 transitions, 7267 flow, removed 234 selfloop flow, removed 22 redundant places. [2025-03-09 00:56:30,594 INFO L231 Difference]: Finished difference. Result has 269 places, 219 transitions, 5025 flow [2025-03-09 00:56:30,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4487, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5025, PETRI_PLACES=269, PETRI_TRANSITIONS=219} [2025-03-09 00:56:30,595 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2025-03-09 00:56:30,595 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 219 transitions, 5025 flow [2025-03-09 00:56:30,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:30,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:56:30,595 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:56:30,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 00:56:30,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-09 00:56:30,796 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 00:56:30,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:56:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -978396808, now seen corresponding path program 14 times [2025-03-09 00:56:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:56:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251133267] [2025-03-09 00:56:30,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:56:30,800 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-09 00:56:30,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 00:56:30,803 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:56:30,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 00:56:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:56:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251133267] [2025-03-09 00:56:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251133267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:56:30,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131520196] [2025-03-09 00:56:30,838 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:56:30,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:30,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:56:30,839 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:56:30,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:56:30,865 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-09 00:56:30,874 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 00:56:30,874 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:56:30,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:56:30,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:56:30,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:56:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 00:56:30,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:56:30,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131520196] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:56:30,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 00:56:30,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2025-03-09 00:56:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522815224] [2025-03-09 00:56:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:56:30,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:56:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:56:30,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:56:30,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:56:30,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-09 00:56:30,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 219 transitions, 5025 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:30,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:56:30,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-09 00:56:30,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:56:32,047 INFO L124 PetriNetUnfolderBase]: 5493/9890 cut-off events. [2025-03-09 00:56:32,047 INFO L125 PetriNetUnfolderBase]: For 491581/491586 co-relation queries the response was YES. [2025-03-09 00:56:32,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62209 conditions, 9890 events. 5493/9890 cut-off events. For 491581/491586 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 68814 event pairs, 189 based on Foata normal form. 1/9047 useless extension candidates. Maximal degree in co-relation 62105. Up to 2676 conditions per place. [2025-03-09 00:56:32,141 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 0 selfloop transitions, 0 changer transitions 693/693 dead transitions. [2025-03-09 00:56:32,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 693 transitions, 15587 flow [2025-03-09 00:56:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:56:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 00:56:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2025-03-09 00:56:32,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 00:56:32,142 INFO L175 Difference]: Start difference. First operand has 269 places, 219 transitions, 5025 flow. Second operand 8 states and 145 transitions. [2025-03-09 00:56:32,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 693 transitions, 15587 flow [2025-03-09 00:56:32,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 693 transitions, 13660 flow, removed 277 selfloop flow, removed 33 redundant places. [2025-03-09 00:56:32,909 INFO L231 Difference]: Finished difference. Result has 236 places, 0 transitions, 0 flow [2025-03-09 00:56:32,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3631, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=236, PETRI_TRANSITIONS=0} [2025-03-09 00:56:32,910 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2025-03-09 00:56:32,910 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 0 transitions, 0 flow [2025-03-09 00:56:32,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:56:32,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-09 00:56:32,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-09 00:56:32,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-09 00:56:32,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-09 00:56:32,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:56:33,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:56:33,113 INFO L422 BasicCegarLoop]: Path program histogram: [14, 3, 3, 2, 1, 1, 1] [2025-03-09 00:56:33,116 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 00:56:33,116 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 00:56:33,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 12:56:33 BasicIcfg [2025-03-09 00:56:33,119 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 00:56:33,119 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 00:56:33,119 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 00:56:33,119 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 00:56:33,120 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:56:06" (3/4) ... [2025-03-09 00:56:33,121 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 00:56:33,123 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-03-09 00:56:33,123 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-03-09 00:56:33,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-03-09 00:56:33,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-09 00:56:33,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-09 00:56:33,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 00:56:33,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 00:56:33,172 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 00:56:33,172 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 00:56:33,172 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 00:56:33,174 INFO L158 Benchmark]: Toolchain (without parser) took 27122.29ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 105.3MB in the beginning and 656.5MB in the end (delta: -551.2MB). Peak memory consumption was 402.2MB. Max. memory is 16.1GB. [2025-03-09 00:56:33,174 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 201.3MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:56:33,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.45ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 86.7MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:56:33,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.30ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 84.6MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 00:56:33,176 INFO L158 Benchmark]: Boogie Preprocessor took 24.13ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:56:33,176 INFO L158 Benchmark]: IcfgBuilder took 288.72ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 65.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:56:33,176 INFO L158 Benchmark]: TraceAbstraction took 26453.97ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 64.7MB in the beginning and 659.1MB in the end (delta: -594.5MB). Peak memory consumption was 884.6MB. Max. memory is 16.1GB. [2025-03-09 00:56:33,176 INFO L158 Benchmark]: Witness Printer took 53.47ms. Allocated memory is still 1.1GB. Free memory was 659.1MB in the beginning and 656.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:56:33,177 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 201.3MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.45ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 86.7MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.30ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 84.6MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.13ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 288.72ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 65.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 26453.97ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 64.7MB in the beginning and 659.1MB in the end (delta: -594.5MB). Peak memory consumption was 884.6MB. Max. memory is 16.1GB. * Witness Printer took 53.47ms. Allocated memory is still 1.1GB. Free memory was 659.1MB in the beginning and 656.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 41 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.4s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4789 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4781 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 301 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6559 IncrementalHoareTripleChecker+Invalid, 6860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 301 mSolverCounterUnsat, 4 mSDtfsCounter, 6559 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1522 GetRequests, 912 SyntacticMatches, 54 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3926 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5025occurred in iteration=24, InterpolantAutomatonStates: 446, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1212 NumberOfCodeBlocks, 1212 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 1638 ConstructedInterpolants, 0 QuantifiedInterpolants, 6796 SizeOfPredicates, 129 NumberOfNonLiveVariables, 1699 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 52 InterpolantComputations, 12 PerfectInterpolantSequences, 118/1144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 00:56:33,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE