./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix004.oepc.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/mix004.oepc.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 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:46:58,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:46:58,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:46:58,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:46:58,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:46:58,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:46:58,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:46:58,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:46:58,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:46:58,755 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:46:58,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:46:58,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:46:58,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:46:58,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:46:58,755 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:46:58,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:46:58,756 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:46:58,757 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:46:58,757 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:46:58,757 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:46:58,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:46:58,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:46:58,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:46:58,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:46:58,758 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 -> 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 [2025-03-04 09:46:59,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:46:59,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:46:59,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:46:59,035 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:46:59,035 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:46:59,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2025-03-04 09:47:00,192 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5432bee2/5abc56d3677b44018e99de6435144f92/FLAG88f55615a [2025-03-04 09:47:00,459 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:47:00,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2025-03-04 09:47:00,474 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5432bee2/5abc56d3677b44018e99de6435144f92/FLAG88f55615a [2025-03-04 09:47:00,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5432bee2/5abc56d3677b44018e99de6435144f92 [2025-03-04 09:47:00,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:47:00,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:47:00,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:47:00,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:47:00,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:47:00,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:47:00" (1/1) ... [2025-03-04 09:47:00,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad99d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:00, skipping insertion in model container [2025-03-04 09:47:00,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:47:00" (1/1) ... [2025-03-04 09:47:00,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:47:01,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:47:01,076 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:47:01,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:47:01,167 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:47:01,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01 WrapperNode [2025-03-04 09:47:01,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:47:01,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:47:01,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:47:01,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:47:01,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,211 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 134 [2025-03-04 09:47:01,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:47:01,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:47:01,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:47:01,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:47:01,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,241 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 09:47:01,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,250 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:47:01,267 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:47:01,267 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:47:01,267 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:47:01,268 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (1/1) ... [2025-03-04 09:47:01,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:47:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:47:01,302 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 09:47:01,306 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 09:47:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:47:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:47:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 09:47:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 09:47:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 09:47:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 09:47:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 09:47:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 09:47:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-04 09:47:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-04 09:47:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:47:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:47:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:47:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:47:01,326 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 09:47:01,456 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:47:01,457 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:47:01,736 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:47:01,736 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:47:01,934 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:47:01,935 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:47:01,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:47:01 BoogieIcfgContainer [2025-03-04 09:47:01,935 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:47:01,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:47:01,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:47:01,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:47:01,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:47:00" (1/3) ... [2025-03-04 09:47:01,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfcc4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:47:01, skipping insertion in model container [2025-03-04 09:47:01,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:47:01" (2/3) ... [2025-03-04 09:47:01,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfcc4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:47:01, skipping insertion in model container [2025-03-04 09:47:01,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:47:01" (3/3) ... [2025-03-04 09:47:01,944 INFO L128 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2025-03-04 09:47:01,955 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:47:01,956 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix004.oepc.i that has 5 procedures, 54 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-04 09:47:01,957 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:47:02,004 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:47:02,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 126 flow [2025-03-04 09:47:02,062 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2025-03-04 09:47:02,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:47:02,071 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 102 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 09:47:02,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 126 flow [2025-03-04 09:47:02,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 114 flow [2025-03-04 09:47:02,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:47:02,097 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;@58d6514c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:47:02,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-04 09:47:02,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:47:02,104 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-04 09:47:02,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:47:02,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:47:02,106 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-04 09:47:02,106 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:47:02,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:47:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash 14078188, now seen corresponding path program 1 times [2025-03-04 09:47:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:47:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705310092] [2025-03-04 09:47:02,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:47:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:47:02,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:47:02,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:47:02,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:47:02,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:47:02,494 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 09:47:02,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:47:02,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705310092] [2025-03-04 09:47:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705310092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:47:02,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:47:02,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:47:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811102347] [2025-03-04 09:47:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:47:02,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:47:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:47:02,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:47:02,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:47:02,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 09:47:02,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 09:47:02,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:47:02,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 09:47:02,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:47:07,965 INFO L124 PetriNetUnfolderBase]: 59279/78610 cut-off events. [2025-03-04 09:47:07,965 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2025-03-04 09:47:08,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156714 conditions, 78610 events. 59279/78610 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 2189. Compared 487565 event pairs, 7349 based on Foata normal form. 3528/82090 useless extension candidates. Maximal degree in co-relation 156702. Up to 67121 conditions per place. [2025-03-04 09:47:08,456 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 67 selfloop transitions, 2 changer transitions 2/79 dead transitions. [2025-03-04 09:47:08,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 321 flow [2025-03-04 09:47:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:47:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:47:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-03-04 09:47:08,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2025-03-04 09:47:08,468 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 112 transitions. [2025-03-04 09:47:08,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 321 flow [2025-03-04 09:47:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 314 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 09:47:08,480 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 104 flow [2025-03-04 09:47:08,481 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 09:47:08,484 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2025-03-04 09:47:08,486 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 104 flow [2025-03-04 09:47:08,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 09:47:08,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:47:08,487 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 09:47:08,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:47:08,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:47:08,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:47:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1423490624, now seen corresponding path program 1 times [2025-03-04 09:47:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:47:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594524301] [2025-03-04 09:47:08,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:47:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:47:08,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:47:08,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:47:08,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:47:08,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:47:08,571 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 09:47:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:47:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594524301] [2025-03-04 09:47:08,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594524301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:47:08,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:47:08,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:47:08,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118413562] [2025-03-04 09:47:08,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:47:08,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:47:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:47:08,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:47:08,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:47:08,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:47:08,577 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 09:47:08,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:47:08,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:47:08,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:47:12,758 INFO L124 PetriNetUnfolderBase]: 53315/74867 cut-off events. [2025-03-04 09:47:12,758 INFO L125 PetriNetUnfolderBase]: For 2744/2744 co-relation queries the response was YES. [2025-03-04 09:47:12,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147985 conditions, 74867 events. 53315/74867 cut-off events. For 2744/2744 co-relation queries the response was YES. Maximal size of possible extension queue 2220. Compared 497990 event pairs, 53315 based on Foata normal form. 1764/76344 useless extension candidates. Maximal degree in co-relation 147975. Up to 69780 conditions per place. [2025-03-04 09:47:13,154 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 36 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2025-03-04 09:47:13,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 178 flow [2025-03-04 09:47:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:47:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:47:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-03-04 09:47:13,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-03-04 09:47:13,156 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 72 transitions. [2025-03-04 09:47:13,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 178 flow [2025-03-04 09:47:13,158 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 09:47:13,158 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 98 flow [2025-03-04 09:47:13,158 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 09:47:13,159 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2025-03-04 09:47:13,159 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 98 flow [2025-03-04 09:47:13,159 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 09:47:13,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:47:13,159 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 09:47:13,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:47:13,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:47:13,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:47:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1423489958, now seen corresponding path program 1 times [2025-03-04 09:47:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:47:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855564670] [2025-03-04 09:47:13,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:47:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:47:13,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:47:13,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:47:13,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:47:13,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:47:13,605 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 09:47:13,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:47:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855564670] [2025-03-04 09:47:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855564670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:47:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:47:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:47:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709261830] [2025-03-04 09:47:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:47:13,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:47:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:47:13,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:47:13,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:47:13,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:47:13,609 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 09:47:13,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:47:13,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:47:13,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:47:18,960 INFO L124 PetriNetUnfolderBase]: 69203/94407 cut-off events. [2025-03-04 09:47:18,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:47:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185897 conditions, 94407 events. 69203/94407 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 611187 event pairs, 35807 based on Foata normal form. 0/92652 useless extension candidates. Maximal degree in co-relation 185891. Up to 61525 conditions per place. [2025-03-04 09:47:19,362 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 50 selfloop transitions, 5 changer transitions 88/149 dead transitions. [2025-03-04 09:47:19,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 149 transitions, 600 flow [2025-03-04 09:47:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:47:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 09:47:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2025-03-04 09:47:19,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295454545454545 [2025-03-04 09:47:19,364 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 98 flow. Second operand 8 states and 233 transitions. [2025-03-04 09:47:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 149 transitions, 600 flow [2025-03-04 09:47:19,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 149 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:47:19,367 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 152 flow [2025-03-04 09:47:19,368 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=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2025-03-04 09:47:19,368 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2025-03-04 09:47:19,368 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 152 flow [2025-03-04 09:47:19,368 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 09:47:19,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:47:19,369 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 09:47:19,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:47:19,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:47:19,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:47:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1129351779, now seen corresponding path program 1 times [2025-03-04 09:47:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:47:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602623001] [2025-03-04 09:47:19,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:47:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:47:19,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:47:19,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:47:19,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:47:19,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:47:19,565 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 09:47:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:47:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602623001] [2025-03-04 09:47:19,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602623001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:47:19,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:47:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:47:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815048133] [2025-03-04 09:47:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:47:19,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:47:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:47:19,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:47:19,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:47:19,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:47:19,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 09:47:19,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:47:19,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:47:19,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:47:24,472 INFO L124 PetriNetUnfolderBase]: 52299/71463 cut-off events. [2025-03-04 09:47:24,473 INFO L125 PetriNetUnfolderBase]: For 52562/52562 co-relation queries the response was YES. [2025-03-04 09:47:24,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179555 conditions, 71463 events. 52299/71463 cut-off events. For 52562/52562 co-relation queries the response was YES. Maximal size of possible extension queue 2035. Compared 443784 event pairs, 10959 based on Foata normal form. 1708/73158 useless extension candidates. Maximal degree in co-relation 179543. Up to 43585 conditions per place. [2025-03-04 09:47:24,942 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 58 selfloop transitions, 3 changer transitions 79/146 dead transitions. [2025-03-04 09:47:24,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 146 transitions, 742 flow [2025-03-04 09:47:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:47:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:47:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2025-03-04 09:47:24,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2025-03-04 09:47:24,945 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 152 flow. Second operand 7 states and 215 transitions. [2025-03-04 09:47:24,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 146 transitions, 742 flow [2025-03-04 09:47:26,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 146 transitions, 729 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-04 09:47:26,338 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 162 flow [2025-03-04 09:47:26,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2025-03-04 09:47:26,338 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2025-03-04 09:47:26,338 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 162 flow [2025-03-04 09:47:26,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 09:47:26,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:47:26,339 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 09:47:26,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:47:26,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-04 09:47:26,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:47:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1355665623, now seen corresponding path program 1 times [2025-03-04 09:47:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:47:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685691248] [2025-03-04 09:47:26,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:47:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:47:26,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:47:26,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:47:26,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:47:26,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:47:26,508 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 09:47:26,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:47:26,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685691248] [2025-03-04 09:47:26,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685691248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:47:26,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:47:26,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:47:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559694715] [2025-03-04 09:47:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:47:26,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:47:26,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:47:26,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:47:26,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:47:26,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-03-04 09:47:26,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 09:47:26,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:47:26,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-03-04 09:47:26,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand