./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix026.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/mix026.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 a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:01:54,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:01:54,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:01:54,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:01:54,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:01:54,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:01:54,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:01:54,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:01:54,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:01:54,784 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:01:54,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:01:54,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:01:54,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:01:54,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:01:54,786 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:01:54,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:01:54,786 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:01:54,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:01:54,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:01:54,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:01:54,787 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:01:54,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:01:54,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:01:54,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:01:54,788 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 -> a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 [2025-03-09 01:01:55,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:01:55,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:01:55,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:01:55,053 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:01:55,054 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:01:55,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2025-03-09 01:01:56,171 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c9169cc/86e3eb48a67b42d4a458469a0a240797/FLAG0d4619412 [2025-03-09 01:01:56,528 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:01:56,529 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2025-03-09 01:01:56,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c9169cc/86e3eb48a67b42d4a458469a0a240797/FLAG0d4619412 [2025-03-09 01:01:56,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c9169cc/86e3eb48a67b42d4a458469a0a240797 [2025-03-09 01:01:56,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:01:56,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:01:56,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:01:56,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:01:56,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:01:56,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:01:56" (1/1) ... [2025-03-09 01:01:56,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3243bdaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:56, skipping insertion in model container [2025-03-09 01:01:56,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:01:56" (1/1) ... [2025-03-09 01:01:56,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:01:57,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:01:57,036 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:01:57,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:01:57,104 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:01:57,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57 WrapperNode [2025-03-09 01:01:57,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:01:57,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:01:57,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:01:57,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:01:57,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,141 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2025-03-09 01:01:57,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:01:57,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:01:57,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:01:57,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:01:57,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,168 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 01:01:57,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,174 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:01:57,183 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:01:57,183 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:01:57,183 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:01:57,183 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (1/1) ... [2025-03-09 01:01:57,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:01:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:01:57,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 01:01:57,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 01:01:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 01:01:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-09 01:01:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-09 01:01:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-09 01:01:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-09 01:01:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 01:01:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:01:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:01:57,239 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:01:57,348 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:01:57,350 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:01:57,618 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:01:57,618 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:01:57,791 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:01:57,792 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:01:57,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:01:57 BoogieIcfgContainer [2025-03-09 01:01:57,793 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:01:57,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:01:57,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:01:57,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:01:57,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:01:56" (1/3) ... [2025-03-09 01:01:57,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b553b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:01:57, skipping insertion in model container [2025-03-09 01:01:57,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:01:57" (2/3) ... [2025-03-09 01:01:57,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b553b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:01:57, skipping insertion in model container [2025-03-09 01:01:57,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:01:57" (3/3) ... [2025-03-09 01:01:57,802 INFO L128 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2025-03-09 01:01:57,814 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:01:57,818 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix026.oepc.i that has 5 procedures, 53 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-03-09 01:01:57,818 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:01:57,873 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 01:01:57,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 54 transitions, 124 flow [2025-03-09 01:01:57,928 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2025-03-09 01:01:57,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:01:57,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2025-03-09 01:01:57,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 54 transitions, 124 flow [2025-03-09 01:01:57,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 50 transitions, 112 flow [2025-03-09 01:01:57,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:01:57,956 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;@2ab106e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:01:57,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-09 01:01:57,960 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:01:57,961 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-09 01:01:57,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:01:57,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:01:57,962 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-09 01:01:57,962 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:01:57,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:01:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash 13860746, now seen corresponding path program 1 times [2025-03-09 01:01:57,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:01:57,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448979101] [2025-03-09 01:01:57,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:01:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:01:58,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 01:01:58,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 01:01:58,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:01:58,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:01:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:01:58,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:01:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448979101] [2025-03-09 01:01:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448979101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:01:58,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:01:58,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:01:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083941203] [2025-03-09 01:01:58,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:01:58,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:01:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:01:58,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:01:58,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:01:58,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2025-03-09 01:01:58,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 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) [2025-03-09 01:01:58,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:01:58,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2025-03-09 01:01:58,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:02:03,088 INFO L124 PetriNetUnfolderBase]: 50459/66898 cut-off events. [2025-03-09 01:02:03,089 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2025-03-09 01:02:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133518 conditions, 66898 events. 50459/66898 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 1925. Compared 409867 event pairs, 6239 based on Foata normal form. 2988/69838 useless extension candidates. Maximal degree in co-relation 133506. Up to 57251 conditions per place. [2025-03-09 01:02:03,489 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 65 selfloop transitions, 2 changer transitions 2/77 dead transitions. [2025-03-09 01:02:03,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 313 flow [2025-03-09 01:02:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:02:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:02:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-03-09 01:02:03,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2025-03-09 01:02:03,503 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 110 transitions. [2025-03-09 01:02:03,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 313 flow [2025-03-09 01:02:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 306 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:02:03,511 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 102 flow [2025-03-09 01:02:03,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2025-03-09 01:02:03,516 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2025-03-09 01:02:03,516 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 102 flow [2025-03-09 01:02:03,516 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) [2025-03-09 01:02:03,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:02:03,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:02:03,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:02:03,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:02:03,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:02:03,519 INFO L85 PathProgramCache]: Analyzing trace with hash 928064886, now seen corresponding path program 1 times [2025-03-09 01:02:03,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:02:03,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925665002] [2025-03-09 01:02:03,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:02:03,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:02:03,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 01:02:03,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:02:03,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:02:03,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:02:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:02:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:02:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925665002] [2025-03-09 01:02:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925665002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:02:03,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:02:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:02:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84588681] [2025-03-09 01:02:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:02:03,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:02:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:02:03,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:02:03,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:02:03,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-09 01:02:03,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 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) [2025-03-09 01:02:03,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:02:03,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-09 01:02:03,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:02:07,854 INFO L124 PetriNetUnfolderBase]: 45383/63227 cut-off events. [2025-03-09 01:02:07,855 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2025-03-09 01:02:08,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125611 conditions, 63227 events. 45383/63227 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 408726 event pairs, 45383 based on Foata normal form. 1512/64452 useless extension candidates. Maximal degree in co-relation 125601. Up to 59508 conditions per place. [2025-03-09 01:02:08,182 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 35 selfloop transitions, 1 changer transitions 1/44 dead transitions. [2025-03-09 01:02:08,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 44 transitions, 174 flow [2025-03-09 01:02:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:02:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:02:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-09 01:02:08,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2025-03-09 01:02:08,183 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 71 transitions. [2025-03-09 01:02:08,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 44 transitions, 174 flow [2025-03-09 01:02:08,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:02:08,186 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 96 flow [2025-03-09 01:02:08,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-03-09 01:02:08,186 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2025-03-09 01:02:08,186 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 96 flow [2025-03-09 01:02:08,187 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) [2025-03-09 01:02:08,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:02:08,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:02:08,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:02:08,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:02:08,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:02:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 928065703, now seen corresponding path program 1 times [2025-03-09 01:02:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:02:08,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371572283] [2025-03-09 01:02:08,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:02:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:02:08,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 01:02:08,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:02:08,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:02:08,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:02:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:02:08,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:02:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371572283] [2025-03-09 01:02:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371572283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:02:08,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:02:08,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:02:08,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127393229] [2025-03-09 01:02:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:02:08,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:02:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:02:08,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:02:08,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:02:08,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-09 01:02:08,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 96 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) [2025-03-09 01:02:08,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:02:08,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-09 01:02:08,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:02:13,063 INFO L124 PetriNetUnfolderBase]: 53483/72623 cut-off events. [2025-03-09 01:02:13,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:02:13,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143561 conditions, 72623 events. 53483/72623 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2120. Compared 447718 event pairs, 9851 based on Foata normal form. 0/71472 useless extension candidates. Maximal degree in co-relation 143555. Up to 37153 conditions per place. [2025-03-09 01:02:13,567 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 53 selfloop transitions, 2 changer transitions 97/158 dead transitions. [2025-03-09 01:02:13,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 158 transitions, 630 flow [2025-03-09 01:02:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:02:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:02:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2025-03-09 01:02:13,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2025-03-09 01:02:13,570 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 96 flow. Second operand 8 states and 242 transitions. [2025-03-09 01:02:13,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 158 transitions, 630 flow [2025-03-09 01:02:13,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 158 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:02:13,574 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 109 flow [2025-03-09 01:02:13,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=109, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2025-03-09 01:02:13,575 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2025-03-09 01:02:13,575 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 109 flow [2025-03-09 01:02:13,576 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) [2025-03-09 01:02:13,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:02:13,576 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] [2025-03-09 01:02:13,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:02:13,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:02:13,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:02:13,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1707354385, now seen corresponding path program 1 times [2025-03-09 01:02:13,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:02:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883013198] [2025-03-09 01:02:13,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:02:13,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:02:13,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:02:13,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:02:13,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:02:13,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:02:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:02:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:02:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883013198] [2025-03-09 01:02:13,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883013198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:02:13,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:02:13,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:02:13,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077766840] [2025-03-09 01:02:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:02:13,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:02:13,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:02:13,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:02:13,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:02:13,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2025-03-09 01:02:13,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:13,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:02:13,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2025-03-09 01:02:13,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:02:16,763 INFO L124 PetriNetUnfolderBase]: 33511/46615 cut-off events. [2025-03-09 01:02:16,763 INFO L125 PetriNetUnfolderBase]: For 2856/2856 co-relation queries the response was YES. [2025-03-09 01:02:16,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98595 conditions, 46615 events. 33511/46615 cut-off events. For 2856/2856 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 289876 event pairs, 4407 based on Foata normal form. 1512/48080 useless extension candidates. Maximal degree in co-relation 98583. Up to 26017 conditions per place. [2025-03-09 01:02:17,101 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 75 selfloop transitions, 6 changer transitions 1/88 dead transitions. [2025-03-09 01:02:17,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 377 flow [2025-03-09 01:02:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:02:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:02:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-03-09 01:02:17,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-03-09 01:02:17,103 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 109 flow. Second operand 4 states and 132 transitions. [2025-03-09 01:02:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 377 flow [2025-03-09 01:02:17,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 361 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-09 01:02:17,467 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 139 flow [2025-03-09 01:02:17,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2025-03-09 01:02:17,468 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2025-03-09 01:02:17,468 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 139 flow [2025-03-09 01:02:17,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:17,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:02:17,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:02:17,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:02:17,469 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:02:17,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:02:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1569017368, now seen corresponding path program 1 times [2025-03-09 01:02:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:02:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240481542] [2025-03-09 01:02:17,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:02:17,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:02:17,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 01:02:17,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:02:17,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:02:17,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:02:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:02:17,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:02:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240481542] [2025-03-09 01:02:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240481542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:02:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:02:17,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:02:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157008009] [2025-03-09 01:02:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:02:17,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:02:17,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:02:17,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:02:17,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:02:17,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2025-03-09 01:02:17,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:17,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:02:17,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2025-03-09 01:02:17,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:02:20,107 INFO L124 PetriNetUnfolderBase]: 22087/30967 cut-off events. [2025-03-09 01:02:20,108 INFO L125 PetriNetUnfolderBase]: For 6264/6264 co-relation queries the response was YES. [2025-03-09 01:02:20,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71177 conditions, 30967 events. 22087/30967 cut-off events. For 6264/6264 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 182335 event pairs, 2563 based on Foata normal form. 1192/32112 useless extension candidates. Maximal degree in co-relation 71167. Up to 12193 conditions per place. [2025-03-09 01:02:20,249 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 97 selfloop transitions, 10 changer transitions 1/114 dead transitions. [2025-03-09 01:02:20,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 114 transitions, 523 flow [2025-03-09 01:02:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:02:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:02:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2025-03-09 01:02:20,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-03-09 01:02:20,250 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 139 flow. Second operand 5 states and 170 transitions. [2025-03-09 01:02:20,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 114 transitions, 523 flow [2025-03-09 01:02:20,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 114 transitions, 512 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-09 01:02:20,265 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 191 flow [2025-03-09 01:02:20,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2025-03-09 01:02:20,267 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2025-03-09 01:02:20,267 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 191 flow [2025-03-09 01:02:20,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:20,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:02:20,268 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:02:20,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:02:20,268 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:02:20,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:02:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1427472130, now seen corresponding path program 1 times [2025-03-09 01:02:20,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:02:20,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909230793] [2025-03-09 01:02:20,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:02:20,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:02:20,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:02:20,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:02:20,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:02:20,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:02:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:02:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:02:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909230793] [2025-03-09 01:02:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909230793] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:02:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:02:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 01:02:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003589991] [2025-03-09 01:02:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:02:20,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:02:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:02:20,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:02:20,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:02:20,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-09 01:02:20,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:20,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:02:20,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-09 01:02:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:02:24,400 INFO L124 PetriNetUnfolderBase]: 39069/54074 cut-off events. [2025-03-09 01:02:24,401 INFO L125 PetriNetUnfolderBase]: For 33416/33416 co-relation queries the response was YES. [2025-03-09 01:02:24,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137030 conditions, 54074 events. 39069/54074 cut-off events. For 33416/33416 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 334032 event pairs, 12896 based on Foata normal form. 284/54331 useless extension candidates. Maximal degree in co-relation 137018. Up to 25668 conditions per place. [2025-03-09 01:02:24,666 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 122 selfloop transitions, 13 changer transitions 83/224 dead transitions. [2025-03-09 01:02:24,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 224 transitions, 1301 flow [2025-03-09 01:02:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:02:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:02:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 294 transitions. [2025-03-09 01:02:24,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2025-03-09 01:02:24,668 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 191 flow. Second operand 10 states and 294 transitions. [2025-03-09 01:02:24,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 224 transitions, 1301 flow [2025-03-09 01:02:24,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 224 transitions, 1184 flow, removed 23 selfloop flow, removed 4 redundant places. [2025-03-09 01:02:24,850 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 248 flow [2025-03-09 01:02:24,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2025-03-09 01:02:24,851 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2025-03-09 01:02:24,851 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 248 flow [2025-03-09 01:02:24,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:24,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:02:24,851 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:02:24,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:02:24,852 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-09 01:02:24,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:02:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 674389292, now seen corresponding path program 2 times [2025-03-09 01:02:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:02:24,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356247671] [2025-03-09 01:02:24,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:02:24,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:02:24,865 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:02:24,913 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:02:24,913 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:02:24,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:02:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:02:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:02:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356247671] [2025-03-09 01:02:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356247671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:02:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:02:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:02:25,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576987781] [2025-03-09 01:02:25,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:02:25,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:02:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:02:25,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:02:25,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:02:25,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2025-03-09 01:02:25,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:02:25,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:02:25,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2025-03-09 01:02:25,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand