./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix014.opt.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-wmm/mix014.opt.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 615dc0a4278e77a094a63ed4629507c6f8d1cda73abba57cd69e8912d83fe5fd --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:47:54,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:47:54,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:47:54,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:47:54,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:47:54,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:47:54,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:47:54,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:47:54,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:47:54,579 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:47:54,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:47:54,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:47:54,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:47:54,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:47:54,580 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:47:54,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:47:54,581 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:47:54,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:47:54,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:47:54,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:47:54,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:47:54,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:47:54,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:47:54,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:47:54,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:47:54,582 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 -> 615dc0a4278e77a094a63ed4629507c6f8d1cda73abba57cd69e8912d83fe5fd [2025-03-04 09:47:54,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:47:54,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:47:54,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:47:54,821 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:47:54,821 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:47:54,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix014.opt.i [2025-03-04 09:47:55,987 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfd4df50/70300196ba5848a1a6e44799931b136f/FLAG4fabc2565 [2025-03-04 09:47:56,242 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:47:56,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i [2025-03-04 09:47:56,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfd4df50/70300196ba5848a1a6e44799931b136f/FLAG4fabc2565 [2025-03-04 09:47:56,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfd4df50/70300196ba5848a1a6e44799931b136f [2025-03-04 09:47:56,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:47:56,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:47:56,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:47:56,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:47:56,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:47:56,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:56,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e60115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56, skipping insertion in model container [2025-03-04 09:47:56,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:56,593 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:47:56,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:47:56,883 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:47:56,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:47:56,955 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:47:56,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56 WrapperNode [2025-03-04 09:47:56,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:47:56,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:47:56,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:47:56,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:47:56,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:56,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:56,990 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 155 [2025-03-04 09:47:56,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:47:56,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:47:56,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:47:56,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:47:56,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:56,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,016 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 09:47:57,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,021 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:47:57,035 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:47:57,035 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:47:57,035 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:47:57,036 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (1/1) ... [2025-03-04 09:47:57,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:47:57,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:47:57,064 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 09:47:57,067 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 09:47:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:47:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 09:47:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 09:47:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 09:47:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-04 09:47:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:47:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:47:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:47:57,089 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 09:47:57,208 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:47:57,209 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:47:57,526 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:47:57,526 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:47:57,732 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:47:57,732 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:47:57,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:47:57 BoogieIcfgContainer [2025-03-04 09:47:57,733 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:47:57,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:47:57,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:47:57,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:47:57,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:47:56" (1/3) ... [2025-03-04 09:47:57,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3e05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:47:57, skipping insertion in model container [2025-03-04 09:47:57,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:56" (2/3) ... [2025-03-04 09:47:57,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3e05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:47:57, skipping insertion in model container [2025-03-04 09:47:57,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:47:57" (3/3) ... [2025-03-04 09:47:57,741 INFO L128 eAbstractionObserver]: Analyzing ICFG mix014.opt.i [2025-03-04 09:47:57,752 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:47:57,753 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix014.opt.i that has 5 procedures, 54 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-04 09:47:57,754 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:47:57,804 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:47:57,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 126 flow [2025-03-04 09:47:57,866 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2025-03-04 09:47:57,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:47:57,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2025-03-04 09:47:57,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 126 flow [2025-03-04 09:47:57,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 114 flow [2025-03-04 09:47:57,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:47:57,900 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;@598c9f2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:47:57,901 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-04 09:47:57,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:47:57,913 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-03-04 09:47:57,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:47:57,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:47:57,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:47:57,914 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:47:57,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:47:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1681243737, now seen corresponding path program 1 times [2025-03-04 09:47:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:47:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432139704] [2025-03-04 09:47:57,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:47:57,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:47:57,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:47:58,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:47:58,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:47:58,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:47:58,364 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 09:47:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:47:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432139704] [2025-03-04 09:47:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432139704] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:47:58,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:47:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:47:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885776713] [2025-03-04 09:47:58,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:47:58,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:47:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:47:58,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:47:58,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:47:58,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 09:47:58,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 09:47:58,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:47:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 09:47:58,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:48:03,104 INFO L124 PetriNetUnfolderBase]: 59301/78597 cut-off events. [2025-03-04 09:48:03,104 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2025-03-04 09:48:03,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156747 conditions, 78597 events. 59301/78597 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 465745 event pairs, 7533 based on Foata normal form. 3528/82054 useless extension candidates. Maximal degree in co-relation 156735. Up to 66889 conditions per place. [2025-03-04 09:48:03,484 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 60 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2025-03-04 09:48:03,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 284 flow [2025-03-04 09:48:03,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:48:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:48:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-03-04 09:48:03,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-03-04 09:48:03,498 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 105 transitions. [2025-03-04 09:48:03,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 284 flow [2025-03-04 09:48:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 09:48:03,512 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 104 flow [2025-03-04 09:48:03,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2025-03-04 09:48:03,518 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2025-03-04 09:48:03,518 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 104 flow [2025-03-04 09:48:03,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 09:48:03,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:48:03,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:48:03,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:48:03,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:48:03,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:48:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 325888517, now seen corresponding path program 1 times [2025-03-04 09:48:03,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:48:03,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558676442] [2025-03-04 09:48:03,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:48:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:48:03,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:48:03,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:48:03,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:48:03,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:48:03,604 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 09:48:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:48:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558676442] [2025-03-04 09:48:03,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558676442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:48:03,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:48:03,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:48:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800864844] [2025-03-04 09:48:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:48:03,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:48:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:48:03,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:48:03,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:48:03,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:48:03,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 09:48:03,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:48:03,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:48:03,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:48:07,338 INFO L124 PetriNetUnfolderBase]: 53337/74145 cut-off events. [2025-03-04 09:48:07,338 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2025-03-04 09:48:07,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146833 conditions, 74145 events. 53337/74145 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 484208 event pairs, 53337 based on Foata normal form. 1764/75586 useless extension candidates. Maximal degree in co-relation 146823. Up to 69814 conditions per place. [2025-03-04 09:48:07,727 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 36 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2025-03-04 09:48:07,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 178 flow [2025-03-04 09:48:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:48:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:48:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-03-04 09:48:07,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-03-04 09:48:07,730 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 72 transitions. [2025-03-04 09:48:07,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 178 flow [2025-03-04 09:48:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:48:07,745 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 98 flow [2025-03-04 09:48:07,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2025-03-04 09:48:07,745 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2025-03-04 09:48:07,745 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 98 flow [2025-03-04 09:48:07,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 09:48:07,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:48:07,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:48:07,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:48:07,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:48:07,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:48:07,746 INFO L85 PathProgramCache]: Analyzing trace with hash 325889119, now seen corresponding path program 1 times [2025-03-04 09:48:07,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:48:07,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629770155] [2025-03-04 09:48:07,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:48:07,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:48:07,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:48:07,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:48:07,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:48:07,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:48:08,001 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 09:48:08,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:48:08,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629770155] [2025-03-04 09:48:08,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629770155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:48:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:48:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:48:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612124785] [2025-03-04 09:48:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:48:08,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:48:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:48:08,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:48:08,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:48:08,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:48:08,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:48:08,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:48:08,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:48:08,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:48:16,056 INFO L124 PetriNetUnfolderBase]: 113469/153085 cut-off events. [2025-03-04 09:48:16,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:48:16,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303489 conditions, 153085 events. 113469/153085 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 1030393 event pairs, 31135 based on Foata normal form. 0/150019 useless extension candidates. Maximal degree in co-relation 303483. Up to 67133 conditions per place. [2025-03-04 09:48:16,944 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 61 selfloop transitions, 8 changer transitions 137/212 dead transitions. [2025-03-04 09:48:16,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 212 transitions, 850 flow [2025-03-04 09:48:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:48:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:48:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 307 transitions. [2025-03-04 09:48:16,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6202020202020202 [2025-03-04 09:48:16,946 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 98 flow. Second operand 9 states and 307 transitions. [2025-03-04 09:48:16,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 212 transitions, 850 flow [2025-03-04 09:48:16,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 212 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:48:16,951 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 207 flow [2025-03-04 09:48:16,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=207, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2025-03-04 09:48:16,951 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2025-03-04 09:48:16,952 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 207 flow [2025-03-04 09:48:16,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:48:16,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:48:16,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:48:16,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:48:16,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:48:16,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:48:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -744169794, now seen corresponding path program 1 times [2025-03-04 09:48:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:48:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001541768] [2025-03-04 09:48:16,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:48:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:48:16,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:48:16,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:48:16,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:48:16,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:48:17,109 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 09:48:17,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:48:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001541768] [2025-03-04 09:48:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001541768] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:48:17,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:48:17,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:48:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920443814] [2025-03-04 09:48:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:48:17,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:48:17,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:48:17,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:48:17,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:48:17,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:48:17,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 09:48:17,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:48:17,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:48:17,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:48:24,498 INFO L124 PetriNetUnfolderBase]: 84493/116227 cut-off events. [2025-03-04 09:48:24,498 INFO L125 PetriNetUnfolderBase]: For 130663/130666 co-relation queries the response was YES. [2025-03-04 09:48:24,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323788 conditions, 116227 events. 84493/116227 cut-off events. For 130663/130666 co-relation queries the response was YES. Maximal size of possible extension queue 3142. Compared 770709 event pairs, 22089 based on Foata normal form. 2800/118965 useless extension candidates. Maximal degree in co-relation 323773. Up to 71201 conditions per place. [2025-03-04 09:48:25,302 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 65 selfloop transitions, 3 changer transitions 99/173 dead transitions. [2025-03-04 09:48:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 173 transitions, 1105 flow [2025-03-04 09:48:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:48:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:48:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2025-03-04 09:48:25,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2025-03-04 09:48:25,304 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 207 flow. Second operand 7 states and 215 transitions. [2025-03-04 09:48:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 173 transitions, 1105 flow [2025-03-04 09:48:26,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 173 transitions, 961 flow, removed 35 selfloop flow, removed 4 redundant places. [2025-03-04 09:48:26,901 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 192 flow [2025-03-04 09:48:26,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2025-03-04 09:48:26,902 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2025-03-04 09:48:26,902 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 192 flow [2025-03-04 09:48:26,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 09:48:26,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:48:26,902 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:48:26,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:48:26,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:48:26,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:48:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -806928513, now seen corresponding path program 1 times [2025-03-04 09:48:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:48:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061961114] [2025-03-04 09:48:26,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:48:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:48:26,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:48:26,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:48:26,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:48:26,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:48:27,102 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 09:48:27,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:48:27,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061961114] [2025-03-04 09:48:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061961114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:48:27,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:48:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:48:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970484454] [2025-03-04 09:48:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:48:27,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:48:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:48:27,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:48:27,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:48:27,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:48:27,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:48:27,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:48:27,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:48:27,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand