./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:43:34,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:43:34,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:43:34,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:43:34,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:43:34,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:43:34,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:43:34,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:43:34,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:43:34,990 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:43:34,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:43:34,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:43:34,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:43:34,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:43:34,991 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:43:34,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:43:34,991 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:43:34,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:43:34,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:43:34,992 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:43:34,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:43:34,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:43:34,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:43:34,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:43:34,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:43:34,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:43:34,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:43:34,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:43:34,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:43:34,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:43:34,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:43:34,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:43:34,994 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2025-03-04 09:43:35,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:43:35,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:43:35,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:43:35,234 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:43:35,234 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:43:35,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-04 09:43:36,373 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97c5643c/97b0bd142a594a04b95ba2df7a0d9d9d/FLAG6e712bf61 [2025-03-04 09:43:36,654 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:43:36,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-04 09:43:36,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97c5643c/97b0bd142a594a04b95ba2df7a0d9d9d/FLAG6e712bf61 [2025-03-04 09:43:36,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97c5643c/97b0bd142a594a04b95ba2df7a0d9d9d [2025-03-04 09:43:36,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:43:36,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:43:36,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:43:36,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:43:36,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:43:36,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:43:36" (1/1) ... [2025-03-04 09:43:36,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e35fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:36, skipping insertion in model container [2025-03-04 09:43:36,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:43:36" (1/1) ... [2025-03-04 09:43:36,972 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:43:37,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:43:37,160 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:43:37,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:43:37,220 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:43:37,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37 WrapperNode [2025-03-04 09:43:37,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:43:37,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:43:37,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:43:37,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:43:37,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,244 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-04 09:43:37,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:43:37,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:43:37,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:43:37,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:43:37,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,260 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 09:43:37,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:43:37,268 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:43:37,268 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:43:37,268 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:43:37,269 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (1/1) ... [2025-03-04 09:43:37,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:43:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:37,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:43:37,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-04 09:43:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-04 09:43:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:43:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:43:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:43:37,318 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:43:37,399 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:43:37,401 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:43:37,566 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:43:37,566 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:43:37,644 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:43:37,644 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:43:37,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:43:37 BoogieIcfgContainer [2025-03-04 09:43:37,644 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:43:37,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:43:37,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:43:37,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:43:37,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:43:36" (1/3) ... [2025-03-04 09:43:37,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdf5936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:43:37, skipping insertion in model container [2025-03-04 09:43:37,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:43:37" (2/3) ... [2025-03-04 09:43:37,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdf5936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:43:37, skipping insertion in model container [2025-03-04 09:43:37,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:43:37" (3/3) ... [2025-03-04 09:43:37,653 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2025-03-04 09:43:37,663 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:43:37,664 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-04 09:43:37,665 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:43:37,706 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:43:37,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-04 09:43:37,760 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-04 09:43:37,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:43:37,765 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. [2025-03-04 09:43:37,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-04 09:43:37,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-04 09:43:37,778 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:43:37,790 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;@59d27c27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:43:37,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 09:43:37,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:43:37,797 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-04 09:43:37,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:43:37,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:37,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:37,798 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)] === [2025-03-04 09:43:37,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:37,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979287, now seen corresponding path program 1 times [2025-03-04 09:43:37,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:37,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863193028] [2025-03-04 09:43:37,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:37,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:43:37,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:43:37,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:37,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863193028] [2025-03-04 09:43:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863193028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:37,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:37,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:43:37,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095708850] [2025-03-04 09:43:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:37,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:43:37,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:38,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:43:38,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:43:38,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:38,004 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) [2025-03-04 09:43:38,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:38,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:38,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:38,113 INFO L124 PetriNetUnfolderBase]: 185/363 cut-off events. [2025-03-04 09:43:38,113 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 09:43:38,114 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. [2025-03-04 09:43:38,119 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-04 09:43:38,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-04 09:43:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:43:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:43:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-04 09:43:38,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-04 09:43:38,132 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-04 09:43:38,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-04 09:43:38,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:43:38,137 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-04 09:43:38,139 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} [2025-03-04 09:43:38,142 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-04 09:43:38,143 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-04 09:43:38,143 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) [2025-03-04 09:43:38,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:38,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:38,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:43:38,145 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)] === [2025-03-04 09:43:38,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979786, now seen corresponding path program 1 times [2025-03-04 09:43:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425169016] [2025-03-04 09:43:38,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:38,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:43:38,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:43:38,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:38,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:38,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:38,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425169016] [2025-03-04 09:43:38,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425169016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:38,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:38,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:43:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235400272] [2025-03-04 09:43:38,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:38,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:43:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:38,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:43:38,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:43:38,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:38,334 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) [2025-03-04 09:43:38,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:38,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:38,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:38,553 INFO L124 PetriNetUnfolderBase]: 328/596 cut-off events. [2025-03-04 09:43:38,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:43:38,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 596 events. 328/596 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2646 event pairs, 45 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1123. Up to 243 conditions per place. [2025-03-04 09:43:38,558 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-03-04 09:43:38,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-03-04 09:43:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:43:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 09:43:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-04 09:43:38,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-03-04 09:43:38,561 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-03-04 09:43:38,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-03-04 09:43:38,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:43:38,562 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-03-04 09:43:38,562 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-03-04 09:43:38,563 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-03-04 09:43:38,563 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-03-04 09:43:38,563 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) [2025-03-04 09:43:38,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:38,563 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:38,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:43:38,563 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)] === [2025-03-04 09:43:38,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1399613595, now seen corresponding path program 1 times [2025-03-04 09:43:38,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:38,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036604603] [2025-03-04 09:43:38,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:38,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:38,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:43:38,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:43:38,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:38,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036604603] [2025-03-04 09:43:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036604603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:43:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248313885] [2025-03-04 09:43:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:38,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:43:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:38,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:43:38,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:43:38,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 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) [2025-03-04 09:43:38,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:38,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:38,858 INFO L124 PetriNetUnfolderBase]: 247/458 cut-off events. [2025-03-04 09:43:38,859 INFO L125 PetriNetUnfolderBase]: For 416/422 co-relation queries the response was YES. [2025-03-04 09:43:38,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 458 events. 247/458 cut-off events. For 416/422 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1883 event pairs, 63 based on Foata normal form. 24/479 useless extension candidates. Maximal degree in co-relation 1174. Up to 190 conditions per place. [2025-03-04 09:43:38,862 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 8 changer transitions 15/54 dead transitions. [2025-03-04 09:43:38,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 294 flow [2025-03-04 09:43:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:43:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 09:43:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-03-04 09:43:38,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-03-04 09:43:38,863 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 6 states and 94 transitions. [2025-03-04 09:43:38,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 294 flow [2025-03-04 09:43:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-04 09:43:38,866 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 144 flow [2025-03-04 09:43:38,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2025-03-04 09:43:38,867 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2025-03-04 09:43:38,867 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 144 flow [2025-03-04 09:43:38,867 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) [2025-03-04 09:43:38,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:38,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:38,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:43:38,867 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)] === [2025-03-04 09:43:38,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1591607260, now seen corresponding path program 1 times [2025-03-04 09:43:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528811034] [2025-03-04 09:43:38,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:38,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:43:38,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:43:38,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:38,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:38,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:38,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528811034] [2025-03-04 09:43:38,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528811034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:38,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:38,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:43:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58506216] [2025-03-04 09:43:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:38,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:43:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:38,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:43:38,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:43:38,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:38,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 144 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) [2025-03-04 09:43:38,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:38,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:38,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:39,149 INFO L124 PetriNetUnfolderBase]: 391/731 cut-off events. [2025-03-04 09:43:39,150 INFO L125 PetriNetUnfolderBase]: For 1184/1190 co-relation queries the response was YES. [2025-03-04 09:43:39,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 731 events. 391/731 cut-off events. For 1184/1190 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3263 event pairs, 89 based on Foata normal form. 33/763 useless extension candidates. Maximal degree in co-relation 2120. Up to 264 conditions per place. [2025-03-04 09:43:39,154 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-03-04 09:43:39,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 518 flow [2025-03-04 09:43:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:43:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:43:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-04 09:43:39,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-04 09:43:39,158 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 144 flow. Second operand 9 states and 144 transitions. [2025-03-04 09:43:39,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 518 flow [2025-03-04 09:43:39,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 476 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-03-04 09:43:39,166 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 240 flow [2025-03-04 09:43:39,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2025-03-04 09:43:39,167 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-03-04 09:43:39,167 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 240 flow [2025-03-04 09:43:39,167 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) [2025-03-04 09:43:39,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:39,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:39,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:43:39,167 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)] === [2025-03-04 09:43:39,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1595175136, now seen corresponding path program 2 times [2025-03-04 09:43:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572024897] [2025-03-04 09:43:39,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:39,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:39,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:43:39,181 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:43:39,181 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 09:43:39,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:39,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572024897] [2025-03-04 09:43:39,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572024897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:39,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:39,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:43:39,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636657564] [2025-03-04 09:43:39,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:39,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:43:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:39,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:43:39,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:43:39,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:39,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 240 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) [2025-03-04 09:43:39,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:39,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:39,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:39,450 INFO L124 PetriNetUnfolderBase]: 328/617 cut-off events. [2025-03-04 09:43:39,451 INFO L125 PetriNetUnfolderBase]: For 1943/1949 co-relation queries the response was YES. [2025-03-04 09:43:39,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 617 events. 328/617 cut-off events. For 1943/1949 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2622 event pairs, 89 based on Foata normal form. 51/667 useless extension candidates. Maximal degree in co-relation 2033. Up to 234 conditions per place. [2025-03-04 09:43:39,454 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 11 changer transitions 28/81 dead transitions. [2025-03-04 09:43:39,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 612 flow [2025-03-04 09:43:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:43:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 09:43:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-03-04 09:43:39,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-03-04 09:43:39,456 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 240 flow. Second operand 8 states and 127 transitions. [2025-03-04 09:43:39,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 612 flow [2025-03-04 09:43:39,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 568 flow, removed 22 selfloop flow, removed 2 redundant places. [2025-03-04 09:43:39,463 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 271 flow [2025-03-04 09:43:39,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2025-03-04 09:43:39,463 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2025-03-04 09:43:39,464 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 271 flow [2025-03-04 09:43:39,464 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) [2025-03-04 09:43:39,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:39,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:39,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:43:39,464 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)] === [2025-03-04 09:43:39,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1774460803, now seen corresponding path program 1 times [2025-03-04 09:43:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:39,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863996777] [2025-03-04 09:43:39,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:39,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:43:39,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:43:39,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:39,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:39,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:39,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863996777] [2025-03-04 09:43:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863996777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:43:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260366633] [2025-03-04 09:43:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:39,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:43:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:39,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:43:39,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:43:39,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:39,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 271 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) [2025-03-04 09:43:39,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:39,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:39,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:39,785 INFO L124 PetriNetUnfolderBase]: 463/869 cut-off events. [2025-03-04 09:43:39,785 INFO L125 PetriNetUnfolderBase]: For 4064/4070 co-relation queries the response was YES. [2025-03-04 09:43:39,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 869 events. 463/869 cut-off events. For 4064/4070 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3939 event pairs, 65 based on Foata normal form. 33/899 useless extension candidates. Maximal degree in co-relation 3157. Up to 181 conditions per place. [2025-03-04 09:43:39,789 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 20 changer transitions 23/101 dead transitions. [2025-03-04 09:43:39,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 821 flow [2025-03-04 09:43:39,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:43:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 09:43:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2025-03-04 09:43:39,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-04 09:43:39,791 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 271 flow. Second operand 11 states and 174 transitions. [2025-03-04 09:43:39,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 821 flow [2025-03-04 09:43:39,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 726 flow, removed 38 selfloop flow, removed 7 redundant places. [2025-03-04 09:43:39,795 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 381 flow [2025-03-04 09:43:39,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=381, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2025-03-04 09:43:39,797 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2025-03-04 09:43:39,797 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 381 flow [2025-03-04 09:43:39,797 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) [2025-03-04 09:43:39,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:39,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:39,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:43:39,798 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)] === [2025-03-04 09:43:39,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1950453345, now seen corresponding path program 2 times [2025-03-04 09:43:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:39,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251068612] [2025-03-04 09:43:39,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:39,805 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:43:39,807 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:43:39,807 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 09:43:39,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:39,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251068612] [2025-03-04 09:43:39,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251068612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:39,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:39,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:43:39,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952624163] [2025-03-04 09:43:39,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:39,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:43:39,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:39,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:43:39,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:43:39,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:39,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 381 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) [2025-03-04 09:43:39,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:39,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:39,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:40,123 INFO L124 PetriNetUnfolderBase]: 400/758 cut-off events. [2025-03-04 09:43:40,124 INFO L125 PetriNetUnfolderBase]: For 5299/5305 co-relation queries the response was YES. [2025-03-04 09:43:40,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 758 events. 400/758 cut-off events. For 5299/5305 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3367 event pairs, 65 based on Foata normal form. 51/806 useless extension candidates. Maximal degree in co-relation 3016. Up to 151 conditions per place. [2025-03-04 09:43:40,128 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 41 selfloop transitions, 20 changer transitions 31/96 dead transitions. [2025-03-04 09:43:40,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 905 flow [2025-03-04 09:43:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:43:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 09:43:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-04 09:43:40,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-03-04 09:43:40,130 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 381 flow. Second operand 10 states and 155 transitions. [2025-03-04 09:43:40,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 905 flow [2025-03-04 09:43:40,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 796 flow, removed 45 selfloop flow, removed 6 redundant places. [2025-03-04 09:43:40,138 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 401 flow [2025-03-04 09:43:40,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2025-03-04 09:43:40,139 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-03-04 09:43:40,139 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 401 flow [2025-03-04 09:43:40,139 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) [2025-03-04 09:43:40,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:40,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:40,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 09:43:40,140 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)] === [2025-03-04 09:43:40,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash 29952673, now seen corresponding path program 3 times [2025-03-04 09:43:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879998943] [2025-03-04 09:43:40,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:43:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:40,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:43:40,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:43:40,148 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 09:43:40,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:40,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879998943] [2025-03-04 09:43:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879998943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:40,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:43:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753717966] [2025-03-04 09:43:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:40,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:43:40,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:40,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:43:40,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:43:40,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:40,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 401 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) [2025-03-04 09:43:40,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:40,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:40,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:40,461 INFO L124 PetriNetUnfolderBase]: 409/764 cut-off events. [2025-03-04 09:43:40,462 INFO L125 PetriNetUnfolderBase]: For 5087/5093 co-relation queries the response was YES. [2025-03-04 09:43:40,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 764 events. 409/764 cut-off events. For 5087/5093 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3435 event pairs, 116 based on Foata normal form. 24/787 useless extension candidates. Maximal degree in co-relation 3041. Up to 363 conditions per place. [2025-03-04 09:43:40,467 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 52 selfloop transitions, 16 changer transitions 25/97 dead transitions. [2025-03-04 09:43:40,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 885 flow [2025-03-04 09:43:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:43:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 09:43:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-04 09:43:40,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-04 09:43:40,471 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 401 flow. Second operand 11 states and 168 transitions. [2025-03-04 09:43:40,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 885 flow [2025-03-04 09:43:40,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 801 flow, removed 26 selfloop flow, removed 8 redundant places. [2025-03-04 09:43:40,480 INFO L231 Difference]: Finished difference. Result has 73 places, 47 transitions, 436 flow [2025-03-04 09:43:40,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=436, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2025-03-04 09:43:40,481 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2025-03-04 09:43:40,481 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 436 flow [2025-03-04 09:43:40,481 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) [2025-03-04 09:43:40,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:40,481 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:40,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 09:43:40,481 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)] === [2025-03-04 09:43:40,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash -20948228, now seen corresponding path program 1 times [2025-03-04 09:43:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:40,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553255748] [2025-03-04 09:43:40,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:40,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:40,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:43:40,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:43:40,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:40,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:40,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553255748] [2025-03-04 09:43:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553255748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:40,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:43:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314506553] [2025-03-04 09:43:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:40,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:43:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:40,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:43:40,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:43:40,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:40,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 436 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) [2025-03-04 09:43:40,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:40,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:40,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:40,783 INFO L124 PetriNetUnfolderBase]: 454/845 cut-off events. [2025-03-04 09:43:40,784 INFO L125 PetriNetUnfolderBase]: For 5959/5965 co-relation queries the response was YES. [2025-03-04 09:43:40,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3437 conditions, 845 events. 454/845 cut-off events. For 5959/5965 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3825 event pairs, 59 based on Foata normal form. 24/866 useless extension candidates. Maximal degree in co-relation 3403. Up to 157 conditions per place. [2025-03-04 09:43:40,788 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 45 selfloop transitions, 26 changer transitions 23/98 dead transitions. [2025-03-04 09:43:40,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 944 flow [2025-03-04 09:43:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:43:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 09:43:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-04 09:43:40,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-03-04 09:43:40,789 INFO L175 Difference]: Start difference. First operand has 73 places, 47 transitions, 436 flow. Second operand 10 states and 155 transitions. [2025-03-04 09:43:40,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 944 flow [2025-03-04 09:43:40,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 885 flow, removed 19 selfloop flow, removed 7 redundant places. [2025-03-04 09:43:40,799 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 521 flow [2025-03-04 09:43:40,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, 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=521, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2025-03-04 09:43:40,800 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2025-03-04 09:43:40,800 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 521 flow [2025-03-04 09:43:40,800 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) [2025-03-04 09:43:40,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:40,800 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:40,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 09:43:40,801 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)] === [2025-03-04 09:43:40,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:40,801 INFO L85 PathProgramCache]: Analyzing trace with hash 51256293, now seen corresponding path program 1 times [2025-03-04 09:43:40,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:40,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31820747] [2025-03-04 09:43:40,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:40,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:43:40,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:43:40,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:40,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:40,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31820747] [2025-03-04 09:43:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31820747] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528526668] [2025-03-04 09:43:40,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:40,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:40,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:43:40,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:43:40,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:43:40,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:43:40,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:40,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:40,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:43:40,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:40,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528526668] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:41,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:41,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-04 09:43:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588211842] [2025-03-04 09:43:41,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:41,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 09:43:41,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:41,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 09:43:41,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-04 09:43:41,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:41,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 50 transitions, 521 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:41,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:41,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:41,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:41,506 INFO L124 PetriNetUnfolderBase]: 598/1121 cut-off events. [2025-03-04 09:43:41,506 INFO L125 PetriNetUnfolderBase]: For 11914/11920 co-relation queries the response was YES. [2025-03-04 09:43:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5134 conditions, 1121 events. 598/1121 cut-off events. For 11914/11920 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4902 event pairs, 161 based on Foata normal form. 69/1189 useless extension candidates. Maximal degree in co-relation 5099. Up to 540 conditions per place. [2025-03-04 09:43:41,512 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 68 selfloop transitions, 17 changer transitions 67/156 dead transitions. [2025-03-04 09:43:41,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 1659 flow [2025-03-04 09:43:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 09:43:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-04 09:43:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2025-03-04 09:43:41,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2025-03-04 09:43:41,514 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 521 flow. Second operand 19 states and 288 transitions. [2025-03-04 09:43:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 1659 flow [2025-03-04 09:43:41,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 1565 flow, removed 30 selfloop flow, removed 7 redundant places. [2025-03-04 09:43:41,528 INFO L231 Difference]: Finished difference. Result has 99 places, 56 transitions, 667 flow [2025-03-04 09:43:41,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=19, PETRI_FLOW=667, PETRI_PLACES=99, PETRI_TRANSITIONS=56} [2025-03-04 09:43:41,528 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2025-03-04 09:43:41,528 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 56 transitions, 667 flow [2025-03-04 09:43:41,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:41,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:41,529 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:41,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:43:41,729 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,SelfDestructingSolverStorable9 [2025-03-04 09:43:41,730 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)] === [2025-03-04 09:43:41,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash -830633115, now seen corresponding path program 2 times [2025-03-04 09:43:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:41,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128653824] [2025-03-04 09:43:41,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:41,736 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 09:43:41,742 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:43:41,742 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:43:41,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:41,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128653824] [2025-03-04 09:43:41,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128653824] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:41,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006579116] [2025-03-04 09:43:41,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:41,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:41,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:41,841 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) [2025-03-04 09:43:41,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:43:41,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 09:43:41,887 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:43:41,887 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:43:41,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:41,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:43:41,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:41,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006579116] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:42,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:42,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-04 09:43:42,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944719620] [2025-03-04 09:43:42,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:42,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 09:43:42,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:42,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 09:43:42,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-04 09:43:42,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:42,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 56 transitions, 667 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:42,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:42,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:42,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:42,568 INFO L124 PetriNetUnfolderBase]: 886/1649 cut-off events. [2025-03-04 09:43:42,568 INFO L125 PetriNetUnfolderBase]: For 41284/41290 co-relation queries the response was YES. [2025-03-04 09:43:42,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 1649 events. 886/1649 cut-off events. For 41284/41290 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8057 event pairs, 74 based on Foata normal form. 78/1726 useless extension candidates. Maximal degree in co-relation 9784. Up to 327 conditions per place. [2025-03-04 09:43:42,580 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 89 selfloop transitions, 47 changer transitions 80/220 dead transitions. [2025-03-04 09:43:42,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 220 transitions, 2977 flow [2025-03-04 09:43:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-04 09:43:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-04 09:43:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 415 transitions. [2025-03-04 09:43:42,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2025-03-04 09:43:42,584 INFO L175 Difference]: Start difference. First operand has 99 places, 56 transitions, 667 flow. Second operand 27 states and 415 transitions. [2025-03-04 09:43:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 220 transitions, 2977 flow [2025-03-04 09:43:42,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 220 transitions, 2369 flow, removed 293 selfloop flow, removed 12 redundant places. [2025-03-04 09:43:42,607 INFO L231 Difference]: Finished difference. Result has 125 places, 72 transitions, 1070 flow [2025-03-04 09:43:42,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1070, PETRI_PLACES=125, PETRI_TRANSITIONS=72} [2025-03-04 09:43:42,609 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2025-03-04 09:43:42,609 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 72 transitions, 1070 flow [2025-03-04 09:43:42,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:42,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:42,610 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:42,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:43:42,814 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,SelfDestructingSolverStorable10 [2025-03-04 09:43:42,814 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)] === [2025-03-04 09:43:42,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1038587948, now seen corresponding path program 1 times [2025-03-04 09:43:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:42,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213523823] [2025-03-04 09:43:42,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:43:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:42,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 09:43:42,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 09:43:42,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:42,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:42,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:42,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213523823] [2025-03-04 09:43:42,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213523823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:42,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:43:42,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 09:43:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31145527] [2025-03-04 09:43:42,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:42,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 09:43:42,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:42,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 09:43:42,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:43:42,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:42,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 72 transitions, 1070 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:42,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:42,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:42,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:43,236 INFO L124 PetriNetUnfolderBase]: 814/1556 cut-off events. [2025-03-04 09:43:43,236 INFO L125 PetriNetUnfolderBase]: For 55022/55028 co-relation queries the response was YES. [2025-03-04 09:43:43,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9951 conditions, 1556 events. 814/1556 cut-off events. For 55022/55028 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7762 event pairs, 285 based on Foata normal form. 33/1586 useless extension candidates. Maximal degree in co-relation 9893. Up to 853 conditions per place. [2025-03-04 09:43:43,249 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 75 selfloop transitions, 24 changer transitions 35/138 dead transitions. [2025-03-04 09:43:43,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 138 transitions, 2166 flow [2025-03-04 09:43:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:43:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 09:43:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 198 transitions. [2025-03-04 09:43:43,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5251989389920424 [2025-03-04 09:43:43,253 INFO L175 Difference]: Start difference. First operand has 125 places, 72 transitions, 1070 flow. Second operand 13 states and 198 transitions. [2025-03-04 09:43:43,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 138 transitions, 2166 flow [2025-03-04 09:43:43,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 138 transitions, 1800 flow, removed 169 selfloop flow, removed 14 redundant places. [2025-03-04 09:43:43,304 INFO L231 Difference]: Finished difference. Result has 120 places, 74 transitions, 942 flow [2025-03-04 09:43:43,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=942, PETRI_PLACES=120, PETRI_TRANSITIONS=74} [2025-03-04 09:43:43,305 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2025-03-04 09:43:43,306 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 74 transitions, 942 flow [2025-03-04 09:43:43,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:43,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:43,307 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:43,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 09:43:43,307 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)] === [2025-03-04 09:43:43,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1683474876, now seen corresponding path program 2 times [2025-03-04 09:43:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330403358] [2025-03-04 09:43:43,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:43,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:43,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-04 09:43:43,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 09:43:43,319 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:43:43,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:43,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330403358] [2025-03-04 09:43:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330403358] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634134977] [2025-03-04 09:43:43,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:43,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:43,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:43,425 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) [2025-03-04 09:43:43,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:43:43,462 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-04 09:43:43,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 09:43:43,473 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:43:43,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:43,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:43:43,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:43,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:43:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634134977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:43:43,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 09:43:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2025-03-04 09:43:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117610251] [2025-03-04 09:43:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:43:43,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 09:43:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:43,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 09:43:43,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:43:43,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:43,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 74 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:43,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:43,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:43,891 INFO L124 PetriNetUnfolderBase]: 850/1640 cut-off events. [2025-03-04 09:43:43,891 INFO L125 PetriNetUnfolderBase]: For 50660/50666 co-relation queries the response was YES. [2025-03-04 09:43:43,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9654 conditions, 1640 events. 850/1640 cut-off events. For 50660/50666 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8440 event pairs, 258 based on Foata normal form. 33/1672 useless extension candidates. Maximal degree in co-relation 9598. Up to 817 conditions per place. [2025-03-04 09:43:43,905 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 75 selfloop transitions, 30 changer transitions 37/146 dead transitions. [2025-03-04 09:43:43,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 146 transitions, 2062 flow [2025-03-04 09:43:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:43:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 09:43:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2025-03-04 09:43:43,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246305418719212 [2025-03-04 09:43:43,906 INFO L175 Difference]: Start difference. First operand has 120 places, 74 transitions, 942 flow. Second operand 14 states and 213 transitions. [2025-03-04 09:43:43,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 146 transitions, 2062 flow [2025-03-04 09:43:43,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 146 transitions, 1936 flow, removed 43 selfloop flow, removed 10 redundant places. [2025-03-04 09:43:43,953 INFO L231 Difference]: Finished difference. Result has 125 places, 78 transitions, 1042 flow [2025-03-04 09:43:43,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1042, PETRI_PLACES=125, PETRI_TRANSITIONS=78} [2025-03-04 09:43:43,954 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2025-03-04 09:43:43,954 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 78 transitions, 1042 flow [2025-03-04 09:43:43,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:43,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:43,954 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:43,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:43:44,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:44,157 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)] === [2025-03-04 09:43:44,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash 36103432, now seen corresponding path program 3 times [2025-03-04 09:43:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446024898] [2025-03-04 09:43:44,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:43:44,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:44,161 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-04 09:43:44,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 09:43:44,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 09:43:44,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:44,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446024898] [2025-03-04 09:43:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446024898] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328303696] [2025-03-04 09:43:44,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:43:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:44,249 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) [2025-03-04 09:43:44,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:43:44,278 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-04 09:43:44,287 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 09:43:44,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 09:43:44,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:44,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:43:44,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:44,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328303696] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:44,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-03-04 09:43:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384956317] [2025-03-04 09:43:44,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:44,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:43:44,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:44,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:43:44,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:43:44,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:44,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 78 transitions, 1042 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) [2025-03-04 09:43:44,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:44,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:44,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:45,067 INFO L124 PetriNetUnfolderBase]: 1282/2410 cut-off events. [2025-03-04 09:43:45,067 INFO L125 PetriNetUnfolderBase]: For 107744/107750 co-relation queries the response was YES. [2025-03-04 09:43:45,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 2410 events. 1282/2410 cut-off events. For 107744/107750 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12554 event pairs, 47 based on Foata normal form. 114/2521 useless extension candidates. Maximal degree in co-relation 16864. Up to 513 conditions per place. [2025-03-04 09:43:45,088 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 102 selfloop transitions, 77 changer transitions 97/280 dead transitions. [2025-03-04 09:43:45,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 280 transitions, 4733 flow [2025-03-04 09:43:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-04 09:43:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-04 09:43:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 477 transitions. [2025-03-04 09:43:45,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5305895439377085 [2025-03-04 09:43:45,090 INFO L175 Difference]: Start difference. First operand has 125 places, 78 transitions, 1042 flow. Second operand 31 states and 477 transitions. [2025-03-04 09:43:45,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 280 transitions, 4733 flow [2025-03-04 09:43:45,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 280 transitions, 4340 flow, removed 173 selfloop flow, removed 11 redundant places. [2025-03-04 09:43:45,140 INFO L231 Difference]: Finished difference. Result has 164 places, 102 transitions, 1979 flow [2025-03-04 09:43:45,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1979, PETRI_PLACES=164, PETRI_TRANSITIONS=102} [2025-03-04 09:43:45,141 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2025-03-04 09:43:45,141 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 102 transitions, 1979 flow [2025-03-04 09:43:45,141 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) [2025-03-04 09:43:45,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:45,141 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:45,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:43:45,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:45,345 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)] === [2025-03-04 09:43:45,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1376358187, now seen corresponding path program 4 times [2025-03-04 09:43:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:45,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852422772] [2025-03-04 09:43:45,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 09:43:45,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:45,350 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-04 09:43:45,354 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 09:43:45,354 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 09:43:45,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:45,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852422772] [2025-03-04 09:43:45,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852422772] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594497917] [2025-03-04 09:43:45,464 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 09:43:45,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:45,466 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) [2025-03-04 09:43:45,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:43:45,495 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-04 09:43:45,504 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 09:43:45,505 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 09:43:45,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:45,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-04 09:43:45,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:45,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594497917] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:45,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-03-04 09:43:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53170435] [2025-03-04 09:43:45,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:45,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 09:43:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:45,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 09:43:45,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2025-03-04 09:43:45,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:45,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 102 transitions, 1979 flow. Second operand has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:45,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:45,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:45,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:46,914 INFO L124 PetriNetUnfolderBase]: 1930/3577 cut-off events. [2025-03-04 09:43:46,914 INFO L125 PetriNetUnfolderBase]: For 319281/319287 co-relation queries the response was YES. [2025-03-04 09:43:46,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32291 conditions, 3577 events. 1930/3577 cut-off events. For 319281/319287 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 19124 event pairs, 60 based on Foata normal form. 177/3753 useless extension candidates. Maximal degree in co-relation 32214. Up to 810 conditions per place. [2025-03-04 09:43:46,945 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 139 selfloop transitions, 120 changer transitions 149/412 dead transitions. [2025-03-04 09:43:46,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 412 transitions, 9569 flow [2025-03-04 09:43:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-04 09:43:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-04 09:43:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 687 transitions. [2025-03-04 09:43:46,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264367816091954 [2025-03-04 09:43:46,948 INFO L175 Difference]: Start difference. First operand has 164 places, 102 transitions, 1979 flow. Second operand 45 states and 687 transitions. [2025-03-04 09:43:46,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 412 transitions, 9569 flow [2025-03-04 09:43:47,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 412 transitions, 7503 flow, removed 1009 selfloop flow, removed 18 redundant places. [2025-03-04 09:43:47,215 INFO L231 Difference]: Finished difference. Result has 209 places, 148 transitions, 3152 flow [2025-03-04 09:43:47,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3152, PETRI_PLACES=209, PETRI_TRANSITIONS=148} [2025-03-04 09:43:47,216 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2025-03-04 09:43:47,216 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 148 transitions, 3152 flow [2025-03-04 09:43:47,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:47,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:47,217 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:47,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:43:47,417 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,SelfDestructingSolverStorable14 [2025-03-04 09:43:47,418 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)] === [2025-03-04 09:43:47,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash -920833341, now seen corresponding path program 5 times [2025-03-04 09:43:47,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:47,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433198962] [2025-03-04 09:43:47,419 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 09:43:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:47,426 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 46 statements into 5 equivalence classes. [2025-03-04 09:43:47,432 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 09:43:47,432 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-03-04 09:43:47,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 09:43:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433198962] [2025-03-04 09:43:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433198962] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928421416] [2025-03-04 09:43:47,606 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 09:43:47,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:47,608 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) [2025-03-04 09:43:47,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:43:47,638 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 46 statements into 5 equivalence classes. [2025-03-04 09:43:47,651 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 46 of 46 statements. [2025-03-04 09:43:47,651 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-03-04 09:43:47,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:47,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 09:43:47,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 09:43:47,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 09:43:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928421416] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:47,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:47,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2025-03-04 09:43:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883777130] [2025-03-04 09:43:47,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:47,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-04 09:43:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:47,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-04 09:43:47,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2025-03-04 09:43:47,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:47,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 148 transitions, 3152 flow. Second operand has 27 states, 27 states have (on average 10.296296296296296) internal successors, (278), 27 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:47,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:47,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:49,648 INFO L124 PetriNetUnfolderBase]: 2839/5180 cut-off events. [2025-03-04 09:43:49,649 INFO L125 PetriNetUnfolderBase]: For 621732/621738 co-relation queries the response was YES. [2025-03-04 09:43:49,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50766 conditions, 5180 events. 2839/5180 cut-off events. For 621732/621738 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 27004 event pairs, 59 based on Foata normal form. 96/5273 useless extension candidates. Maximal degree in co-relation 50672. Up to 1143 conditions per place. [2025-03-04 09:43:49,736 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 165 selfloop transitions, 189 changer transitions 143/501 dead transitions. [2025-03-04 09:43:49,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 501 transitions, 13446 flow [2025-03-04 09:43:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-04 09:43:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2025-03-04 09:43:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 763 transitions. [2025-03-04 09:43:49,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5262068965517241 [2025-03-04 09:43:49,738 INFO L175 Difference]: Start difference. First operand has 209 places, 148 transitions, 3152 flow. Second operand 50 states and 763 transitions. [2025-03-04 09:43:49,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 501 transitions, 13446 flow [2025-03-04 09:43:50,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 501 transitions, 9927 flow, removed 1726 selfloop flow, removed 25 redundant places. [2025-03-04 09:43:50,198 INFO L231 Difference]: Finished difference. Result has 254 places, 219 transitions, 4924 flow [2025-03-04 09:43:50,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4924, PETRI_PLACES=254, PETRI_TRANSITIONS=219} [2025-03-04 09:43:50,199 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2025-03-04 09:43:50,199 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 219 transitions, 4924 flow [2025-03-04 09:43:50,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.296296296296296) internal successors, (278), 27 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:50,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:50,199 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:50,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:43:50,400 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,SelfDestructingSolverStorable15 [2025-03-04 09:43:50,400 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)] === [2025-03-04 09:43:50,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash 816821469, now seen corresponding path program 6 times [2025-03-04 09:43:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:50,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883090942] [2025-03-04 09:43:50,401 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 09:43:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:50,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 11 equivalence classes. [2025-03-04 09:43:50,414 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:43:50,414 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-03-04 09:43:50,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883090942] [2025-03-04 09:43:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883090942] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9584156] [2025-03-04 09:43:50,792 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 09:43:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:50,794 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) [2025-03-04 09:43:50,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:43:50,827 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 11 equivalence classes. [2025-03-04 09:43:50,845 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:43:50,846 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-03-04 09:43:50,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:50,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:43:50,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:50,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:51,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9584156] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:51,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:51,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-03-04 09:43:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432615407] [2025-03-04 09:43:51,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:51,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 09:43:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:51,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 09:43:51,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 09:43:51,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:51,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 219 transitions, 4924 flow. Second operand has 45 states, 45 states have (on average 10.022222222222222) internal successors, (451), 45 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:51,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:51,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:51,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:52,841 INFO L124 PetriNetUnfolderBase]: 2875/5390 cut-off events. [2025-03-04 09:43:52,841 INFO L125 PetriNetUnfolderBase]: For 723517/723523 co-relation queries the response was YES. [2025-03-04 09:43:52,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50850 conditions, 5390 events. 2875/5390 cut-off events. For 723517/723523 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 29768 event pairs, 1175 based on Foata normal form. 51/5440 useless extension candidates. Maximal degree in co-relation 50738. Up to 4140 conditions per place. [2025-03-04 09:43:52,881 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 273 selfloop transitions, 31 changer transitions 81/389 dead transitions. [2025-03-04 09:43:52,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 389 transitions, 9898 flow [2025-03-04 09:43:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-04 09:43:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-04 09:43:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 452 transitions. [2025-03-04 09:43:52,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5027808676307007 [2025-03-04 09:43:52,883 INFO L175 Difference]: Start difference. First operand has 254 places, 219 transitions, 4924 flow. Second operand 31 states and 452 transitions. [2025-03-04 09:43:52,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 389 transitions, 9898 flow [2025-03-04 09:43:53,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 389 transitions, 7958 flow, removed 869 selfloop flow, removed 30 redundant places. [2025-03-04 09:43:53,881 INFO L231 Difference]: Finished difference. Result has 263 places, 233 transitions, 4304 flow [2025-03-04 09:43:53,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4304, PETRI_PLACES=263, PETRI_TRANSITIONS=233} [2025-03-04 09:43:53,882 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2025-03-04 09:43:53,882 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 233 transitions, 4304 flow [2025-03-04 09:43:53,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.022222222222222) internal successors, (451), 45 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:53,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:53,882 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:53,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:43:54,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:54,084 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)] === [2025-03-04 09:43:54,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1297646191, now seen corresponding path program 7 times [2025-03-04 09:43:54,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:54,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570511439] [2025-03-04 09:43:54,085 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 09:43:54,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:54,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-04 09:43:54,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:43:54,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:54,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570511439] [2025-03-04 09:43:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570511439] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626068517] [2025-03-04 09:43:54,496 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 09:43:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:54,498 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) [2025-03-04 09:43:54,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:43:54,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-04 09:43:54,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:43:54,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:43:54,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:54,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:43:54,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:54,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626068517] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:55,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:55,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-03-04 09:43:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895793174] [2025-03-04 09:43:55,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:55,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 09:43:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:55,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 09:43:55,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 09:43:55,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:55,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 233 transitions, 4304 flow. Second operand has 45 states, 45 states have (on average 10.044444444444444) internal successors, (452), 45 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:55,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:55,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:55,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:43:57,319 INFO L124 PetriNetUnfolderBase]: 3289/6313 cut-off events. [2025-03-04 09:43:57,320 INFO L125 PetriNetUnfolderBase]: For 738919/738925 co-relation queries the response was YES. [2025-03-04 09:43:57,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55990 conditions, 6313 events. 3289/6313 cut-off events. For 738919/738925 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 36772 event pairs, 934 based on Foata normal form. 69/6381 useless extension candidates. Maximal degree in co-relation 55872. Up to 3412 conditions per place. [2025-03-04 09:43:57,369 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 310 selfloop transitions, 110 changer transitions 143/567 dead transitions. [2025-03-04 09:43:57,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 567 transitions, 12634 flow [2025-03-04 09:43:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-04 09:43:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-04 09:43:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 829 transitions. [2025-03-04 09:43:57,374 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5015124016938899 [2025-03-04 09:43:57,374 INFO L175 Difference]: Start difference. First operand has 263 places, 233 transitions, 4304 flow. Second operand 57 states and 829 transitions. [2025-03-04 09:43:57,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 567 transitions, 12634 flow [2025-03-04 09:43:58,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 567 transitions, 12074 flow, removed 263 selfloop flow, removed 16 redundant places. [2025-03-04 09:43:58,466 INFO L231 Difference]: Finished difference. Result has 323 places, 275 transitions, 5671 flow [2025-03-04 09:43:58,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4000, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5671, PETRI_PLACES=323, PETRI_TRANSITIONS=275} [2025-03-04 09:43:58,467 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2025-03-04 09:43:58,467 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 275 transitions, 5671 flow [2025-03-04 09:43:58,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.044444444444444) internal successors, (452), 45 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:58,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:43:58,467 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:43:58,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 09:43:58,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 09:43:58,668 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)] === [2025-03-04 09:43:58,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:43:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 820081613, now seen corresponding path program 8 times [2025-03-04 09:43:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:43:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859429444] [2025-03-04 09:43:58,669 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:43:58,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-03-04 09:43:58,696 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:43:58,696 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:43:58,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:59,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:43:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859429444] [2025-03-04 09:43:59,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859429444] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:43:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012005967] [2025-03-04 09:43:59,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:43:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:43:59,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:43:59,180 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) [2025-03-04 09:43:59,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:43:59,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 67 statements into 2 equivalence classes. [2025-03-04 09:43:59,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:43:59,225 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:43:59,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:43:59,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:43:59,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:43:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:59,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:43:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:43:59,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012005967] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:43:59,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:43:59,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2025-03-04 09:43:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26735497] [2025-03-04 09:43:59,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:43:59,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-04 09:43:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:43:59,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-04 09:43:59,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2025-03-04 09:43:59,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:43:59,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 275 transitions, 5671 flow. Second operand has 46 states, 46 states have (on average 10.065217391304348) internal successors, (463), 46 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:43:59,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:43:59,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:43:59,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:02,578 INFO L124 PetriNetUnfolderBase]: 3973/7897 cut-off events. [2025-03-04 09:44:02,578 INFO L125 PetriNetUnfolderBase]: For 1137400/1137406 co-relation queries the response was YES. [2025-03-04 09:44:02,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75821 conditions, 7897 events. 3973/7897 cut-off events. For 1137400/1137406 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 50078 event pairs, 672 based on Foata normal form. 69/7965 useless extension candidates. Maximal degree in co-relation 75683. Up to 2698 conditions per place. [2025-03-04 09:44:02,659 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 283 selfloop transitions, 219 changer transitions 143/649 dead transitions. [2025-03-04 09:44:02,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 649 transitions, 15736 flow [2025-03-04 09:44:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-04 09:44:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-04 09:44:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 835 transitions. [2025-03-04 09:44:02,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5051421657592257 [2025-03-04 09:44:02,661 INFO L175 Difference]: Start difference. First operand has 323 places, 275 transitions, 5671 flow. Second operand 57 states and 835 transitions. [2025-03-04 09:44:02,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 649 transitions, 15736 flow [2025-03-04 09:44:05,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 649 transitions, 14702 flow, removed 456 selfloop flow, removed 26 redundant places. [2025-03-04 09:44:05,014 INFO L231 Difference]: Finished difference. Result has 369 places, 353 transitions, 8008 flow [2025-03-04 09:44:05,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=8008, PETRI_PLACES=369, PETRI_TRANSITIONS=353} [2025-03-04 09:44:05,014 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2025-03-04 09:44:05,014 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 353 transitions, 8008 flow [2025-03-04 09:44:05,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.065217391304348) internal successors, (463), 46 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:05,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:05,015 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:05,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:44:05,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:05,215 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)] === [2025-03-04 09:44:05,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1219853233, now seen corresponding path program 9 times [2025-03-04 09:44:05,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:05,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382666873] [2025-03-04 09:44:05,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:44:05,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:05,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 6 equivalence classes. [2025-03-04 09:44:05,227 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:05,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-04 09:44:05,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382666873] [2025-03-04 09:44:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382666873] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:44:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547990942] [2025-03-04 09:44:05,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:44:05,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:05,484 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) [2025-03-04 09:44:05,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:44:05,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 6 equivalence classes. [2025-03-04 09:44:05,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:05,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-04 09:44:05,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:05,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:44:05,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:05,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:44:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:06,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547990942] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:44:06,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:44:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-03-04 09:44:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217811552] [2025-03-04 09:44:06,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:44:06,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 09:44:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:06,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 09:44:06,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1682, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 09:44:06,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:06,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 353 transitions, 8008 flow. Second operand has 45 states, 45 states have (on average 10.022222222222222) internal successors, (451), 45 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:06,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:06,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:06,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:09,079 INFO L124 PetriNetUnfolderBase]: 4621/9382 cut-off events. [2025-03-04 09:44:09,080 INFO L125 PetriNetUnfolderBase]: For 1619630/1619636 co-relation queries the response was YES. [2025-03-04 09:44:09,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96746 conditions, 9382 events. 4621/9382 cut-off events. For 1619630/1619636 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 62950 event pairs, 420 based on Foata normal form. 69/9450 useless extension candidates. Maximal degree in co-relation 96591. Up to 2337 conditions per place. [2025-03-04 09:44:09,178 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 248 selfloop transitions, 331 changer transitions 143/726 dead transitions. [2025-03-04 09:44:09,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 726 transitions, 18865 flow [2025-03-04 09:44:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-04 09:44:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-04 09:44:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 841 transitions. [2025-03-04 09:44:09,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2025-03-04 09:44:09,180 INFO L175 Difference]: Start difference. First operand has 369 places, 353 transitions, 8008 flow. Second operand 57 states and 841 transitions. [2025-03-04 09:44:09,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 726 transitions, 18865 flow [2025-03-04 09:44:14,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 726 transitions, 17080 flow, removed 809 selfloop flow, removed 24 redundant places. [2025-03-04 09:44:14,281 INFO L231 Difference]: Finished difference. Result has 409 places, 428 transitions, 10138 flow [2025-03-04 09:44:14,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7011, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=10138, PETRI_PLACES=409, PETRI_TRANSITIONS=428} [2025-03-04 09:44:14,281 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2025-03-04 09:44:14,281 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 428 transitions, 10138 flow [2025-03-04 09:44:14,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.022222222222222) internal successors, (451), 45 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:14,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:14,282 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:14,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:44:14,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:14,482 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)] === [2025-03-04 09:44:14,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash -799568325, now seen corresponding path program 10 times [2025-03-04 09:44:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854627852] [2025-03-04 09:44:14,484 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 09:44:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:14,487 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-03-04 09:44:14,492 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:14,492 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 09:44:14,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 1 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854627852] [2025-03-04 09:44:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854627852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:44:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950715499] [2025-03-04 09:44:14,784 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 09:44:14,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:14,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:14,786 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) [2025-03-04 09:44:14,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:44:14,821 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-03-04 09:44:14,835 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:14,836 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 09:44:14,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:14,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:44:14,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 1 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:14,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:44:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950715499] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:44:15,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:44:15,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2025-03-04 09:44:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293146762] [2025-03-04 09:44:15,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:44:15,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-04 09:44:15,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:15,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-04 09:44:15,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2025-03-04 09:44:15,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:15,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 428 transitions, 10138 flow. Second operand has 46 states, 46 states have (on average 10.043478260869565) internal successors, (462), 46 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:15,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:15,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:15,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:18,815 INFO L124 PetriNetUnfolderBase]: 5134/10525 cut-off events. [2025-03-04 09:44:18,815 INFO L125 PetriNetUnfolderBase]: For 1960229/1960235 co-relation queries the response was YES. [2025-03-04 09:44:18,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111819 conditions, 10525 events. 5134/10525 cut-off events. For 1960229/1960235 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 73267 event pairs, 222 based on Foata normal form. 69/10593 useless extension candidates. Maximal degree in co-relation 111656. Up to 2631 conditions per place. [2025-03-04 09:44:18,950 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 220 selfloop transitions, 419 changer transitions 143/786 dead transitions. [2025-03-04 09:44:18,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 786 transitions, 21003 flow [2025-03-04 09:44:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-04 09:44:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-04 09:44:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 847 transitions. [2025-03-04 09:44:18,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5124016938898972 [2025-03-04 09:44:18,952 INFO L175 Difference]: Start difference. First operand has 409 places, 428 transitions, 10138 flow. Second operand 57 states and 847 transitions. [2025-03-04 09:44:18,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 786 transitions, 21003 flow [2025-03-04 09:44:26,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 786 transitions, 19147 flow, removed 845 selfloop flow, removed 25 redundant places. [2025-03-04 09:44:26,263 INFO L231 Difference]: Finished difference. Result has 448 places, 484 transitions, 11917 flow [2025-03-04 09:44:26,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9078, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=11917, PETRI_PLACES=448, PETRI_TRANSITIONS=484} [2025-03-04 09:44:26,264 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2025-03-04 09:44:26,264 INFO L471 AbstractCegarLoop]: Abstraction has has 448 places, 484 transitions, 11917 flow [2025-03-04 09:44:26,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.043478260869565) internal successors, (462), 46 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:26,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:26,265 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:26,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:44:26,465 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,SelfDestructingSolverStorable20 [2025-03-04 09:44:26,465 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)] === [2025-03-04 09:44:26,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1688834957, now seen corresponding path program 11 times [2025-03-04 09:44:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31631869] [2025-03-04 09:44:26,466 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 09:44:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:26,470 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 10 equivalence classes. [2025-03-04 09:44:26,474 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:26,475 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-04 09:44:26,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31631869] [2025-03-04 09:44:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31631869] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:44:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513687340] [2025-03-04 09:44:26,716 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 09:44:26,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:26,718 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) [2025-03-04 09:44:26,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:44:26,747 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 10 equivalence classes. [2025-03-04 09:44:26,763 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:26,763 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-04 09:44:26,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:26,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:44:26,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:26,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:44:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513687340] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:44:27,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:44:27,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-03-04 09:44:27,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560322705] [2025-03-04 09:44:27,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:44:27,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 09:44:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:27,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 09:44:27,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 09:44:27,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 484 transitions, 11917 flow. Second operand has 45 states, 45 states have (on average 10.044444444444444) internal successors, (452), 45 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:30,959 INFO L124 PetriNetUnfolderBase]: 5521/11338 cut-off events. [2025-03-04 09:44:30,959 INFO L125 PetriNetUnfolderBase]: For 2221266/2221272 co-relation queries the response was YES. [2025-03-04 09:44:31,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122920 conditions, 11338 events. 5521/11338 cut-off events. For 2221266/2221272 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 80320 event pairs, 126 based on Foata normal form. 69/11406 useless extension candidates. Maximal degree in co-relation 122748. Up to 2817 conditions per place. [2025-03-04 09:44:31,116 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 206 selfloop transitions, 474 changer transitions 143/827 dead transitions. [2025-03-04 09:44:31,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 827 transitions, 22594 flow [2025-03-04 09:44:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-04 09:44:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-04 09:44:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 853 transitions. [2025-03-04 09:44:31,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5160314579552329 [2025-03-04 09:44:31,118 INFO L175 Difference]: Start difference. First operand has 448 places, 484 transitions, 11917 flow. Second operand 57 states and 853 transitions. [2025-03-04 09:44:31,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 827 transitions, 22594 flow [2025-03-04 09:44:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 827 transitions, 20581 flow, removed 855 selfloop flow, removed 29 redundant places. [2025-03-04 09:44:37,730 INFO L231 Difference]: Finished difference. Result has 486 places, 523 transitions, 13446 flow [2025-03-04 09:44:37,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10818, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=13446, PETRI_PLACES=486, PETRI_TRANSITIONS=523} [2025-03-04 09:44:37,731 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 456 predicate places. [2025-03-04 09:44:37,731 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 523 transitions, 13446 flow [2025-03-04 09:44:37,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.044444444444444) internal successors, (452), 45 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:37,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:37,732 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:37,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 09:44:37,932 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,SelfDestructingSolverStorable21 [2025-03-04 09:44:37,932 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)] === [2025-03-04 09:44:37,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1822028719, now seen corresponding path program 12 times [2025-03-04 09:44:37,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:37,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416631200] [2025-03-04 09:44:37,934 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 09:44:37,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:37,939 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 9 equivalence classes. [2025-03-04 09:44:37,950 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:37,950 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-04 09:44:37,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:38,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:38,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416631200] [2025-03-04 09:44:38,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416631200] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:44:38,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896161333] [2025-03-04 09:44:38,195 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 09:44:38,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:38,199 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) [2025-03-04 09:44:38,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:44:38,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 9 equivalence classes. [2025-03-04 09:44:38,252 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:44:38,252 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-04 09:44:38,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:38,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:44:38,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:38,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:44:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896161333] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:44:38,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:44:38,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2025-03-04 09:44:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613290745] [2025-03-04 09:44:38,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:44:38,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-04 09:44:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:38,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-04 09:44:38,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1691, Unknown=0, NotChecked=0, Total=2070 [2025-03-04 09:44:38,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:38,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 523 transitions, 13446 flow. Second operand has 46 states, 46 states have (on average 10.065217391304348) internal successors, (463), 46 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:38,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:42,789 INFO L124 PetriNetUnfolderBase]: 5782/11845 cut-off events. [2025-03-04 09:44:42,790 INFO L125 PetriNetUnfolderBase]: For 2419579/2419585 co-relation queries the response was YES. [2025-03-04 09:44:42,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131428 conditions, 11845 events. 5782/11845 cut-off events. For 2419579/2419585 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 84287 event pairs, 88 based on Foata normal form. 78/11922 useless extension candidates. Maximal degree in co-relation 131244. Up to 2925 conditions per place. [2025-03-04 09:44:42,934 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 204 selfloop transitions, 504 changer transitions 148/860 dead transitions. [2025-03-04 09:44:42,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 860 transitions, 24520 flow [2025-03-04 09:44:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-03-04 09:44:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2025-03-04 09:44:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 875 transitions. [2025-03-04 09:44:42,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5202140309155767 [2025-03-04 09:44:42,940 INFO L175 Difference]: Start difference. First operand has 486 places, 523 transitions, 13446 flow. Second operand 58 states and 875 transitions. [2025-03-04 09:44:42,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 860 transitions, 24520 flow [2025-03-04 09:44:48,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 860 transitions, 22153 flow, removed 924 selfloop flow, removed 36 redundant places. [2025-03-04 09:44:48,918 INFO L231 Difference]: Finished difference. Result has 519 places, 546 transitions, 14599 flow [2025-03-04 09:44:48,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=12031, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=14599, PETRI_PLACES=519, PETRI_TRANSITIONS=546} [2025-03-04 09:44:48,919 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2025-03-04 09:44:48,919 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 546 transitions, 14599 flow [2025-03-04 09:44:48,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.065217391304348) internal successors, (463), 46 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:48,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:48,920 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:48,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:44:49,120 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,SelfDestructingSolverStorable22 [2025-03-04 09:44:49,120 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)] === [2025-03-04 09:44:49,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -203185646, now seen corresponding path program 13 times [2025-03-04 09:44:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101780352] [2025-03-04 09:44:49,121 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 09:44:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:49,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-04 09:44:49,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-04 09:44:49,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:49,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:44:49,129 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:44:49,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-04 09:44:49,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-04 09:44:49,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:49,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:44:49,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:44:49,154 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:44:49,155 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-04 09:44:49,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-04 09:44:49,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-04 09:44:49,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-04 09:44:49,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-04 09:44:49,157 INFO L422 BasicCegarLoop]: Path program histogram: [13, 3, 2, 2, 1, 1, 1, 1] [2025-03-04 09:44:49,224 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 09:44:49,224 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:44:49,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:44:49 BasicIcfg [2025-03-04 09:44:49,227 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:44:49,228 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:44:49,228 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:44:49,228 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:44:49,229 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:43:37" (3/4) ... [2025-03-04 09:44:49,231 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 09:44:49,232 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:44:49,233 INFO L158 Benchmark]: Toolchain (without parser) took 72289.42ms. Allocated memory was 142.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 111.3MB in the beginning and 1.1GB in the end (delta: -979.7MB). Peak memory consumption was 678.3MB. Max. memory is 16.1GB. [2025-03-04 09:44:49,233 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:44:49,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.06ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 92.0MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:44:49,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.92ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 90.5MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:44:49,233 INFO L158 Benchmark]: Boogie Preprocessor took 22.55ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 89.5MB in the end (delta: 962.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:44:49,233 INFO L158 Benchmark]: IcfgBuilder took 376.44ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 70.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:44:49,234 INFO L158 Benchmark]: TraceAbstraction took 71581.50ms. Allocated memory was 142.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 69.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 628.0MB. Max. memory is 16.1GB. [2025-03-04 09:44:49,235 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 1.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 300.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:44:49,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.06ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 92.0MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.92ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 90.5MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.55ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 89.5MB in the end (delta: 962.9kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 376.44ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 70.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 71581.50ms. Allocated memory was 142.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 69.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 628.0MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 1.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 300.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, argc=51, i=3, id1=2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, argc=51, i=3, id1=2, id2=3, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, i=7, id1=2, id2=3, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=25, id1=2, id2=3, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 71.4s, OverallIterations: 24, TraceHistogramMax: 10, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 59.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8937 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8931 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 467 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9630 IncrementalHoareTripleChecker+Invalid, 10097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 467 mSolverCounterUnsat, 3 mSDtfsCounter, 9630 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2010 GetRequests, 1040 SyntacticMatches, 3 SemanticMatches, 967 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21632 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14599occurred in iteration=23, InterpolantAutomatonStates: 649, 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, 0.4s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1474 NumberOfCodeBlocks, 1474 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 1962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8976 SizeOfPredicates, 178 NumberOfNonLiveVariables, 1818 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 48 InterpolantComputations, 11 PerfectInterpolantSequences, 7/3413 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-04 09:44:49,249 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:44:51,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:44:51,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:44:51,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:44:51,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:44:51,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:44:51,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:44:51,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:44:51,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:44:51,459 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:44:51,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:44:51,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:44:51,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:44:51,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:44:51,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:44:51,461 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:44:51,462 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:44:51,463 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:44:51,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:44:51,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:44:51,463 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2025-03-04 09:44:51,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:44:51,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:44:51,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:44:51,776 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:44:51,776 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:44:51,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-04 09:44:52,995 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7abc8b/845c9bf2cee54033b35fa2f6840e5cf1/FLAGc6915ce8c [2025-03-04 09:44:53,254 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:44:53,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-04 09:44:53,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7abc8b/845c9bf2cee54033b35fa2f6840e5cf1/FLAGc6915ce8c [2025-03-04 09:44:53,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e7abc8b/845c9bf2cee54033b35fa2f6840e5cf1 [2025-03-04 09:44:53,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:44:53,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:44:53,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:44:53,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:44:53,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:44:53,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:53,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f708bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53, skipping insertion in model container [2025-03-04 09:44:53,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:53,622 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:44:53,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:44:53,922 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:44:53,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:44:53,999 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:44:53,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53 WrapperNode [2025-03-04 09:44:53,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:44:54,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:44:54,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:44:54,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:44:54,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,036 INFO L138 Inliner]: procedures = 169, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2025-03-04 09:44:54,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:44:54,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:44:54,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:44:54,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:44:54,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,059 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 09:44:54,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:44:54,079 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:44:54,079 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:44:54,079 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:44:54,080 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (1/1) ... [2025-03-04 09:44:54,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:44:54,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:54,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:44:54,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:44:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-04 09:44:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-04 09:44:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-04 09:44:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-04 09:44:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:44:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:44:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:44:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:44:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:44:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:44:54,131 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:44:54,227 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:44:54,229 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:44:54,370 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:44:54,371 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:44:54,494 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:44:54,494 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:44:54,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:44:54 BoogieIcfgContainer [2025-03-04 09:44:54,494 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:44:54,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:44:54,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:44:54,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:44:54,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:44:53" (1/3) ... [2025-03-04 09:44:54,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:44:54, skipping insertion in model container [2025-03-04 09:44:54,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:53" (2/3) ... [2025-03-04 09:44:54,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:44:54, skipping insertion in model container [2025-03-04 09:44:54,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:44:54" (3/3) ... [2025-03-04 09:44:54,503 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2025-03-04 09:44:54,513 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:44:54,515 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-04 09:44:54,515 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:44:54,548 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:44:54,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-04 09:44:54,589 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-04 09:44:54,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:54,599 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. [2025-03-04 09:44:54,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-04 09:44:54,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-04 09:44:54,614 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:44:54,623 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;@2de884f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:44:54,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 09:44:54,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:44:54,629 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-04 09:44:54,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:54,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:54,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:54,630 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)] === [2025-03-04 09:44:54,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1483129001, now seen corresponding path program 1 times [2025-03-04 09:44:54,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:54,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107622232] [2025-03-04 09:44:54,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:54,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:54,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:44:54,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:44:54,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:44:54,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:44:54,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:54,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:54,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 09:44:54,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:54,770 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:54,771 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107622232] [2025-03-04 09:44:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107622232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:54,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:54,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:44:54,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3671443] [2025-03-04 09:44:54,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:54,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:44:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:54,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:44:54,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:44:54,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:54,807 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) [2025-03-04 09:44:54,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:54,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:54,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:54,934 INFO L124 PetriNetUnfolderBase]: 185/363 cut-off events. [2025-03-04 09:44:54,936 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 09:44:54,937 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. [2025-03-04 09:44:54,941 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-04 09:44:54,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-04 09:44:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:44:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:44:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-04 09:44:54,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-04 09:44:54,953 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-04 09:44:54,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-04 09:44:54,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:54,959 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-04 09:44:54,961 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} [2025-03-04 09:44:54,964 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-04 09:44:54,965 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-04 09:44:54,965 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) [2025-03-04 09:44:54,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:54,965 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:54,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:44:55,169 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 [2025-03-04 09:44:55,169 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)] === [2025-03-04 09:44:55,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1483128502, now seen corresponding path program 1 times [2025-03-04 09:44:55,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:55,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883510465] [2025-03-04 09:44:55,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:55,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:55,173 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) [2025-03-04 09:44:55,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:44:55,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:44:55,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:44:55,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:55,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:55,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:44:55,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:55,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:55,295 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:55,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883510465] [2025-03-04 09:44:55,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883510465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:55,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:55,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:44:55,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704475223] [2025-03-04 09:44:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:55,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:44:55,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:55,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:44:55,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:44:55,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:55,300 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) [2025-03-04 09:44:55,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:55,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:55,588 INFO L124 PetriNetUnfolderBase]: 328/596 cut-off events. [2025-03-04 09:44:55,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:55,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 596 events. 328/596 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2646 event pairs, 45 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1123. Up to 243 conditions per place. [2025-03-04 09:44:55,595 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-03-04 09:44:55,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-03-04 09:44:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:44:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 09:44:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-04 09:44:55,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-03-04 09:44:55,599 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-03-04 09:44:55,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-03-04 09:44:55,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:44:55,602 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-03-04 09:44:55,603 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-03-04 09:44:55,604 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-03-04 09:44:55,604 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-03-04 09:44:55,604 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) [2025-03-04 09:44:55,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:55,605 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:55,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:44:55,805 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 [2025-03-04 09:44:55,806 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)] === [2025-03-04 09:44:55,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash 284669415, now seen corresponding path program 1 times [2025-03-04 09:44:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127539171] [2025-03-04 09:44:55,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:55,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:55,810 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) [2025-03-04 09:44:55,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:44:55,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:44:55,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:44:55,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:55,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:55,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:44:55,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:55,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:55,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127539171] [2025-03-04 09:44:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127539171] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:44:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518495189] [2025-03-04 09:44:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:55,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:44:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:55,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:44:55,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:44:55,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:55,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 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) [2025-03-04 09:44:55,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:55,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:55,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:56,136 INFO L124 PetriNetUnfolderBase]: 247/458 cut-off events. [2025-03-04 09:44:56,138 INFO L125 PetriNetUnfolderBase]: For 414/420 co-relation queries the response was YES. [2025-03-04 09:44:56,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 458 events. 247/458 cut-off events. For 414/420 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1851 event pairs, 48 based on Foata normal form. 18/475 useless extension candidates. Maximal degree in co-relation 1174. Up to 190 conditions per place. [2025-03-04 09:44:56,141 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2025-03-04 09:44:56,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 316 flow [2025-03-04 09:44:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:44:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:44:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2025-03-04 09:44:56,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2025-03-04 09:44:56,148 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 7 states and 110 transitions. [2025-03-04 09:44:56,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 316 flow [2025-03-04 09:44:56,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:56,154 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 143 flow [2025-03-04 09:44:56,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2025-03-04 09:44:56,156 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2025-03-04 09:44:56,156 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 143 flow [2025-03-04 09:44:56,157 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) [2025-03-04 09:44:56,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:56,157 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:56,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:44:56,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:56,358 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)] === [2025-03-04 09:44:56,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 92675750, now seen corresponding path program 1 times [2025-03-04 09:44:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889011652] [2025-03-04 09:44:56,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:56,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:56,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:56,363 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) [2025-03-04 09:44:56,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:44:56,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:44:56,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:44:56,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:56,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:56,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:44:56,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:56,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:56,466 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:56,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889011652] [2025-03-04 09:44:56,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889011652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:56,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:56,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:44:56,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183114439] [2025-03-04 09:44:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:56,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:44:56,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:56,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:44:56,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:44:56,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:56,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 143 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) [2025-03-04 09:44:56,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:56,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:56,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:56,681 INFO L124 PetriNetUnfolderBase]: 391/731 cut-off events. [2025-03-04 09:44:56,681 INFO L125 PetriNetUnfolderBase]: For 1182/1188 co-relation queries the response was YES. [2025-03-04 09:44:56,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 731 events. 391/731 cut-off events. For 1182/1188 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3253 event pairs, 89 based on Foata normal form. 33/763 useless extension candidates. Maximal degree in co-relation 2104. Up to 264 conditions per place. [2025-03-04 09:44:56,685 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-03-04 09:44:56,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 517 flow [2025-03-04 09:44:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:44:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:44:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-04 09:44:56,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-04 09:44:56,687 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 143 flow. Second operand 9 states and 144 transitions. [2025-03-04 09:44:56,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 517 flow [2025-03-04 09:44:56,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 478 flow, removed 17 selfloop flow, removed 3 redundant places. [2025-03-04 09:44:56,693 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 236 flow [2025-03-04 09:44:56,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2025-03-04 09:44:56,695 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2025-03-04 09:44:56,695 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 236 flow [2025-03-04 09:44:56,695 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) [2025-03-04 09:44:56,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:56,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:56,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:44:56,895 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 [2025-03-04 09:44:56,896 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)] === [2025-03-04 09:44:56,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash 89107874, now seen corresponding path program 2 times [2025-03-04 09:44:56,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:56,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125087874] [2025-03-04 09:44:56,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:44:56,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:56,900 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) [2025-03-04 09:44:56,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:44:56,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:44:56,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:44:56,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 09:44:56,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:56,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:44:56,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:56,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:56,990 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125087874] [2025-03-04 09:44:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125087874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:56,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:56,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:44:56,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767914389] [2025-03-04 09:44:56,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:56,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:44:56,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:56,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:44:56,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:44:56,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:56,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 236 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) [2025-03-04 09:44:56,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:56,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:56,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:57,215 INFO L124 PetriNetUnfolderBase]: 346/661 cut-off events. [2025-03-04 09:44:57,215 INFO L125 PetriNetUnfolderBase]: For 2134/2140 co-relation queries the response was YES. [2025-03-04 09:44:57,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 661 events. 346/661 cut-off events. For 2134/2140 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2921 event pairs, 82 based on Foata normal form. 45/705 useless extension candidates. Maximal degree in co-relation 2172. Up to 273 conditions per place. [2025-03-04 09:44:57,220 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 12 changer transitions 30/86 dead transitions. [2025-03-04 09:44:57,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 655 flow [2025-03-04 09:44:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:44:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:44:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-04 09:44:57,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-03-04 09:44:57,223 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 236 flow. Second operand 9 states and 140 transitions. [2025-03-04 09:44:57,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 655 flow [2025-03-04 09:44:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 595 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:57,232 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 278 flow [2025-03-04 09:44:57,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2025-03-04 09:44:57,232 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-03-04 09:44:57,234 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 278 flow [2025-03-04 09:44:57,234 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) [2025-03-04 09:44:57,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:57,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:57,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:44:57,434 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 [2025-03-04 09:44:57,435 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)] === [2025-03-04 09:44:57,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 146694531, now seen corresponding path program 1 times [2025-03-04 09:44:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989238833] [2025-03-04 09:44:57,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:57,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:57,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:57,438 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) [2025-03-04 09:44:57,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:44:57,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:44:57,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:44:57,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:57,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:57,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:44:57,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:57,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:57,551 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989238833] [2025-03-04 09:44:57,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989238833] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:57,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:57,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:44:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609777954] [2025-03-04 09:44:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:57,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:44:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:57,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:44:57,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:44:57,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:57,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 278 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) [2025-03-04 09:44:57,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:57,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:57,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:57,835 INFO L124 PetriNetUnfolderBase]: 526/1004 cut-off events. [2025-03-04 09:44:57,836 INFO L125 PetriNetUnfolderBase]: For 4650/4656 co-relation queries the response was YES. [2025-03-04 09:44:57,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1004 events. 526/1004 cut-off events. For 4650/4656 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4920 event pairs, 116 based on Foata normal form. 27/1030 useless extension candidates. Maximal degree in co-relation 3642. Up to 331 conditions per place. [2025-03-04 09:44:57,843 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 15 changer transitions 25/108 dead transitions. [2025-03-04 09:44:57,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 884 flow [2025-03-04 09:44:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 09:44:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 09:44:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2025-03-04 09:44:57,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2025-03-04 09:44:57,845 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 278 flow. Second operand 12 states and 190 transitions. [2025-03-04 09:44:57,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 884 flow [2025-03-04 09:44:57,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 838 flow, removed 17 selfloop flow, removed 4 redundant places. [2025-03-04 09:44:57,851 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 382 flow [2025-03-04 09:44:57,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=382, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2025-03-04 09:44:57,852 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2025-03-04 09:44:57,852 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 382 flow [2025-03-04 09:44:57,852 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) [2025-03-04 09:44:57,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:57,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:57,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:44:58,053 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 [2025-03-04 09:44:58,053 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)] === [2025-03-04 09:44:58,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1157274665, now seen corresponding path program 2 times [2025-03-04 09:44:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:58,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711829076] [2025-03-04 09:44:58,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:44:58,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:58,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:58,056 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) [2025-03-04 09:44:58,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:44:58,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:44:58,100 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:44:58,100 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 09:44:58,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:58,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:44:58,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:58,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:58,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711829076] [2025-03-04 09:44:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711829076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:58,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:58,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:44:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479930833] [2025-03-04 09:44:58,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:58,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:44:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:58,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:44:58,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:44:58,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:58,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 382 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) [2025-03-04 09:44:58,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:58,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:58,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:58,399 INFO L124 PetriNetUnfolderBase]: 481/936 cut-off events. [2025-03-04 09:44:58,400 INFO L125 PetriNetUnfolderBase]: For 7976/7982 co-relation queries the response was YES. [2025-03-04 09:44:58,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 936 events. 481/936 cut-off events. For 7976/7982 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4615 event pairs, 126 based on Foata normal form. 45/980 useless extension candidates. Maximal degree in co-relation 3864. Up to 340 conditions per place. [2025-03-04 09:44:58,406 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 53 selfloop transitions, 15 changer transitions 29/101 dead transitions. [2025-03-04 09:44:58,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 1009 flow [2025-03-04 09:44:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:44:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 09:44:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2025-03-04 09:44:58,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2025-03-04 09:44:58,408 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 382 flow. Second operand 10 states and 158 transitions. [2025-03-04 09:44:58,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 1009 flow [2025-03-04 09:44:58,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 836 flow, removed 76 selfloop flow, removed 8 redundant places. [2025-03-04 09:44:58,420 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 387 flow [2025-03-04 09:44:58,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2025-03-04 09:44:58,422 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2025-03-04 09:44:58,422 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 387 flow [2025-03-04 09:44:58,423 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) [2025-03-04 09:44:58,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:58,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:58,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:44:58,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:58,624 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)] === [2025-03-04 09:44:58,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1853511785, now seen corresponding path program 3 times [2025-03-04 09:44:58,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:58,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167622202] [2025-03-04 09:44:58,625 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:44:58,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:58,627 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) [2025-03-04 09:44:58,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:44:58,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:44:58,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:44:58,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 09:44:58,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:58,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:44:58,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:58,740 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:58,740 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:58,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167622202] [2025-03-04 09:44:58,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167622202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:58,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:58,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:44:58,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294345274] [2025-03-04 09:44:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:58,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:44:58,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:58,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:44:58,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:44:58,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:58,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 387 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) [2025-03-04 09:44:58,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:58,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:58,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:58,970 INFO L124 PetriNetUnfolderBase]: 436/842 cut-off events. [2025-03-04 09:44:58,970 INFO L125 PetriNetUnfolderBase]: For 6421/6427 co-relation queries the response was YES. [2025-03-04 09:44:58,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 842 events. 436/842 cut-off events. For 6421/6427 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4073 event pairs, 152 based on Foata normal form. 33/874 useless extension candidates. Maximal degree in co-relation 3327. Up to 555 conditions per place. [2025-03-04 09:44:58,989 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 9 changer transitions 29/96 dead transitions. [2025-03-04 09:44:58,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 875 flow [2025-03-04 09:44:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:44:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 09:44:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2025-03-04 09:44:58,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2025-03-04 09:44:58,990 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 387 flow. Second operand 10 states and 153 transitions. [2025-03-04 09:44:58,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 875 flow [2025-03-04 09:44:58,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 828 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-03-04 09:44:58,998 INFO L231 Difference]: Finished difference. Result has 80 places, 50 transitions, 413 flow [2025-03-04 09:44:58,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=413, PETRI_PLACES=80, PETRI_TRANSITIONS=50} [2025-03-04 09:44:59,000 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2025-03-04 09:44:59,001 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 50 transitions, 413 flow [2025-03-04 09:44:59,001 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) [2025-03-04 09:44:59,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:59,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:59,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 09:44:59,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:59,205 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)] === [2025-03-04 09:44:59,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1597813599, now seen corresponding path program 4 times [2025-03-04 09:44:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233850616] [2025-03-04 09:44:59,206 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 09:44:59,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:59,209 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) [2025-03-04 09:44:59,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:44:59,241 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-04 09:44:59,247 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:44:59,248 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 09:44:59,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:59,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:44:59,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:59,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:44:59,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:44:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233850616] [2025-03-04 09:44:59,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233850616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:59,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:59,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:44:59,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896815755] [2025-03-04 09:44:59,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:59,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:44:59,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:44:59,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:44:59,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:44:59,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:44:59,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 50 transitions, 413 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) [2025-03-04 09:44:59,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:59,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:44:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:59,526 INFO L124 PetriNetUnfolderBase]: 463/890 cut-off events. [2025-03-04 09:44:59,527 INFO L125 PetriNetUnfolderBase]: For 7762/7768 co-relation queries the response was YES. [2025-03-04 09:44:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 890 events. 463/890 cut-off events. For 7762/7768 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4365 event pairs, 152 based on Foata normal form. 18/907 useless extension candidates. Maximal degree in co-relation 3603. Up to 456 conditions per place. [2025-03-04 09:44:59,532 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 16 changer transitions 21/95 dead transitions. [2025-03-04 09:44:59,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 95 transitions, 911 flow [2025-03-04 09:44:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:44:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:44:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-04 09:44:59,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-03-04 09:44:59,533 INFO L175 Difference]: Start difference. First operand has 80 places, 50 transitions, 413 flow. Second operand 9 states and 140 transitions. [2025-03-04 09:44:59,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 95 transitions, 911 flow [2025-03-04 09:44:59,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 839 flow, removed 29 selfloop flow, removed 8 redundant places. [2025-03-04 09:44:59,543 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 472 flow [2025-03-04 09:44:59,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=472, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2025-03-04 09:44:59,544 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-03-04 09:44:59,544 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 472 flow [2025-03-04 09:44:59,544 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) [2025-03-04 09:44:59,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:59,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:59,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:44:59,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:59,745 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)] === [2025-03-04 09:44:59,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash 979589608, now seen corresponding path program 1 times [2025-03-04 09:44:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:44:59,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171764213] [2025-03-04 09:44:59,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:59,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:44:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:59,748 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) [2025-03-04 09:44:59,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:44:59,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:44:59,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:44:59,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:59,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:59,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:44:59,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:44:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:59,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:45:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:00,002 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171764213] [2025-03-04 09:45:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171764213] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:45:00,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:45:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-03-04 09:45:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805170161] [2025-03-04 09:45:00,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:45:00,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 09:45:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:00,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 09:45:00,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-04 09:45:00,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:45:00,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 472 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:00,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:00,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:45:00,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:00,698 INFO L124 PetriNetUnfolderBase]: 697/1288 cut-off events. [2025-03-04 09:45:00,698 INFO L125 PetriNetUnfolderBase]: For 15157/15163 co-relation queries the response was YES. [2025-03-04 09:45:00,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5886 conditions, 1288 events. 697/1288 cut-off events. For 15157/15163 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6106 event pairs, 36 based on Foata normal form. 51/1338 useless extension candidates. Maximal degree in co-relation 5849. Up to 219 conditions per place. [2025-03-04 09:45:00,707 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 69 selfloop transitions, 43 changer transitions 60/176 dead transitions. [2025-03-04 09:45:00,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 176 transitions, 1786 flow [2025-03-04 09:45:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 09:45:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-04 09:45:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 323 transitions. [2025-03-04 09:45:00,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2025-03-04 09:45:00,709 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 472 flow. Second operand 21 states and 323 transitions. [2025-03-04 09:45:00,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 176 transitions, 1786 flow [2025-03-04 09:45:00,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1697 flow, removed 34 selfloop flow, removed 6 redundant places. [2025-03-04 09:45:00,725 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 897 flow [2025-03-04 09:45:00,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=897, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2025-03-04 09:45:00,726 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2025-03-04 09:45:00,726 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 897 flow [2025-03-04 09:45:00,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:00,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:00,727 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:45:00,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:45:00,927 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 [2025-03-04 09:45:00,928 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)] === [2025-03-04 09:45:00,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1762401677, now seen corresponding path program 1 times [2025-03-04 09:45:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998754651] [2025-03-04 09:45:00,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:00,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:00,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:00,931 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) [2025-03-04 09:45:00,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:45:00,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:45:00,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:45:00,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:00,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:00,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:45:00,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:45:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:01,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:45:01,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998754651] [2025-03-04 09:45:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998754651] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:01,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:45:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317889011] [2025-03-04 09:45:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:01,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:45:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:01,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:45:01,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:45:01,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:45:01,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 897 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) [2025-03-04 09:45:01,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:01,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:45:01,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:01,378 INFO L124 PetriNetUnfolderBase]: 679/1286 cut-off events. [2025-03-04 09:45:01,378 INFO L125 PetriNetUnfolderBase]: For 19364/19370 co-relation queries the response was YES. [2025-03-04 09:45:01,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 1286 events. 679/1286 cut-off events. For 19364/19370 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6464 event pairs, 239 based on Foata normal form. 33/1318 useless extension candidates. Maximal degree in co-relation 6138. Up to 828 conditions per place. [2025-03-04 09:45:01,386 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 73 selfloop transitions, 15 changer transitions 31/123 dead transitions. [2025-03-04 09:45:01,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 1585 flow [2025-03-04 09:45:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:45:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 09:45:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-04 09:45:01,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-04 09:45:01,388 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 897 flow. Second operand 11 states and 168 transitions. [2025-03-04 09:45:01,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 1585 flow [2025-03-04 09:45:01,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1171 flow, removed 188 selfloop flow, removed 14 redundant places. [2025-03-04 09:45:01,420 INFO L231 Difference]: Finished difference. Result has 99 places, 71 transitions, 676 flow [2025-03-04 09:45:01,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=676, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2025-03-04 09:45:01,420 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2025-03-04 09:45:01,420 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 676 flow [2025-03-04 09:45:01,421 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) [2025-03-04 09:45:01,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:01,421 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:45:01,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:45:01,622 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 [2025-03-04 09:45:01,622 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)] === [2025-03-04 09:45:01,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:01,623 INFO L85 PathProgramCache]: Analyzing trace with hash 860098855, now seen corresponding path program 2 times [2025-03-04 09:45:01,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:01,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376799295] [2025-03-04 09:45:01,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:45:01,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:01,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:01,626 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) [2025-03-04 09:45:01,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:45:01,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 09:45:01,673 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:45:01,673 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:45:01,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:01,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:45:01,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:45:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:01,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:45:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:01,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376799295] [2025-03-04 09:45:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376799295] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:45:01,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:45:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-03-04 09:45:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670618394] [2025-03-04 09:45:01,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:45:01,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 09:45:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:01,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 09:45:01,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-04 09:45:01,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:45:01,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 676 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:01,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:01,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:45:01,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:02,892 INFO L124 PetriNetUnfolderBase]: 1210/2256 cut-off events. [2025-03-04 09:45:02,892 INFO L125 PetriNetUnfolderBase]: For 34086/34092 co-relation queries the response was YES. [2025-03-04 09:45:02,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11035 conditions, 2256 events. 1210/2256 cut-off events. For 34086/34092 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12176 event pairs, 82 based on Foata normal form. 69/2324 useless extension candidates. Maximal degree in co-relation 10993. Up to 475 conditions per place. [2025-03-04 09:45:02,907 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 129 selfloop transitions, 50 changer transitions 59/242 dead transitions. [2025-03-04 09:45:02,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 242 transitions, 2760 flow [2025-03-04 09:45:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-04 09:45:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-04 09:45:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 421 transitions. [2025-03-04 09:45:02,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5376756066411239 [2025-03-04 09:45:02,911 INFO L175 Difference]: Start difference. First operand has 99 places, 71 transitions, 676 flow. Second operand 27 states and 421 transitions. [2025-03-04 09:45:02,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 242 transitions, 2760 flow [2025-03-04 09:45:02,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 242 transitions, 2561 flow, removed 87 selfloop flow, removed 8 redundant places. [2025-03-04 09:45:02,935 INFO L231 Difference]: Finished difference. Result has 131 places, 93 transitions, 1241 flow [2025-03-04 09:45:02,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1241, PETRI_PLACES=131, PETRI_TRANSITIONS=93} [2025-03-04 09:45:02,937 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2025-03-04 09:45:02,937 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 93 transitions, 1241 flow [2025-03-04 09:45:02,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:02,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:02,938 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:45:02,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 09:45:03,142 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 [2025-03-04 09:45:03,142 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)] === [2025-03-04 09:45:03,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 853905203, now seen corresponding path program 3 times [2025-03-04 09:45:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566487831] [2025-03-04 09:45:03,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:45:03,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:03,145 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) [2025-03-04 09:45:03,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:45:03,175 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:45:03,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:45:03,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 09:45:03,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:03,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:45:03,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:45:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:03,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:45:03,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566487831] [2025-03-04 09:45:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566487831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:03,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:03,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:45:03,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652039579] [2025-03-04 09:45:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:03,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:45:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:03,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:45:03,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:45:03,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-04 09:45:03,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 93 transitions, 1241 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) [2025-03-04 09:45:03,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:03,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-04 09:45:03,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:03,610 INFO L124 PetriNetUnfolderBase]: 1075/2087 cut-off events. [2025-03-04 09:45:03,610 INFO L125 PetriNetUnfolderBase]: For 55759/55765 co-relation queries the response was YES. [2025-03-04 09:45:03,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 2087 events. 1075/2087 cut-off events. For 55759/55765 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11680 event pairs, 426 based on Foata normal form. 81/2167 useless extension candidates. Maximal degree in co-relation 11238. Up to 1194 conditions per place. [2025-03-04 09:45:03,625 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 93 selfloop transitions, 22 changer transitions 40/159 dead transitions. [2025-03-04 09:45:03,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 159 transitions, 2315 flow [2025-03-04 09:45:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:45:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 09:45:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2025-03-04 09:45:03,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5391849529780565 [2025-03-04 09:45:03,626 INFO L175 Difference]: Start difference. First operand has 131 places, 93 transitions, 1241 flow. Second operand 11 states and 172 transitions. [2025-03-04 09:45:03,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 159 transitions, 2315 flow [2025-03-04 09:45:03,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 159 transitions, 1780 flow, removed 254 selfloop flow, removed 13 redundant places. [2025-03-04 09:45:03,676 INFO L231 Difference]: Finished difference. Result has 126 places, 96 transitions, 1046 flow [2025-03-04 09:45:03,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1046, PETRI_PLACES=126, PETRI_TRANSITIONS=96} [2025-03-04 09:45:03,677 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2025-03-04 09:45:03,677 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 96 transitions, 1046 flow [2025-03-04 09:45:03,677 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) [2025-03-04 09:45:03,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:03,677 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:45:03,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0