./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix039.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/mix039.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 4df22382a468f75ea1bc6624bacd8789c0b9b9f8aa1bc2866cf2715dcbc507bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:19:07,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:19:07,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:19:08,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:19:08,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:19:08,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:19:08,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:19:08,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:19:08,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:19:08,017 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:19:08,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:19:08,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:19:08,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:19:08,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:19:08,017 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:19:08,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:19:08,018 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:19:08,019 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:19:08,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:19:08,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:19:08,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:19:08,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:19:08,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:19:08,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:19:08,020 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-jdk21/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 -> 4df22382a468f75ea1bc6624bacd8789c0b9b9f8aa1bc2866cf2715dcbc507bc [2025-02-08 08:19:08,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:19:08,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:19:08,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:19:08,264 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:19:08,264 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:19:08,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix039.opt.i [2025-02-08 08:19:09,511 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/04e039f8b/728bc99f33fb4e948fbb1a58854e5b78/FLAG8ec80a1bc [2025-02-08 08:19:09,851 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:19:09,853 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix039.opt.i [2025-02-08 08:19:09,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/04e039f8b/728bc99f33fb4e948fbb1a58854e5b78/FLAG8ec80a1bc [2025-02-08 08:19:09,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/04e039f8b/728bc99f33fb4e948fbb1a58854e5b78 [2025-02-08 08:19:09,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:19:09,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:19:09,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:19:09,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:19:09,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:19:09,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:19:09" (1/1) ... [2025-02-08 08:19:09,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6b090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:09, skipping insertion in model container [2025-02-08 08:19:09,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:19:09" (1/1) ... [2025-02-08 08:19:09,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:19:10,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:19:10,232 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:19:10,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:19:10,328 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:19:10,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10 WrapperNode [2025-02-08 08:19:10,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:19:10,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:19:10,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:19:10,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:19:10,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,360 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2025-02-08 08:19:10,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:19:10,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:19:10,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:19:10,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:19:10,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,382 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]. [2025-02-08 08:19:10,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,387 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:19:10,397 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:19:10,397 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:19:10,397 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:19:10,398 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (1/1) ... [2025-02-08 08:19:10,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:19:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:19:10,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:19:10,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:19:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:19:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:19:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 08:19:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 08:19:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 08:19:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 08:19:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 08:19:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 08:19:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 08:19:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 08:19:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:19:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:19:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:19:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:19:10,472 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:19:10,607 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:19:10,608 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:19:10,902 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:19:10,902 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:19:11,080 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:19:11,081 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:19:11,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:19:11 BoogieIcfgContainer [2025-02-08 08:19:11,081 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:19:11,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:19:11,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:19:11,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:19:11,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:19:09" (1/3) ... [2025-02-08 08:19:11,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a15f3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:19:11, skipping insertion in model container [2025-02-08 08:19:11,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:19:10" (2/3) ... [2025-02-08 08:19:11,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a15f3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:19:11, skipping insertion in model container [2025-02-08 08:19:11,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:19:11" (3/3) ... [2025-02-08 08:19:11,089 INFO L128 eAbstractionObserver]: Analyzing ICFG mix039.opt.i [2025-02-08 08:19:11,103 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:19:11,104 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix039.opt.i that has 5 procedures, 54 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-02-08 08:19:11,104 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:19:11,147 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:19:11,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 126 flow [2025-02-08 08:19:11,201 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2025-02-08 08:19:11,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:19:11,210 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 114 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. [2025-02-08 08:19:11,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 126 flow [2025-02-08 08:19:11,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 114 flow [2025-02-08 08:19:11,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:19:11,226 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;@61794415, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:19:11,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-08 08:19:11,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:19:11,236 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-02-08 08:19:11,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:19:11,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:19:11,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:19:11,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:19:11,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:19:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 326414930, now seen corresponding path program 1 times [2025-02-08 08:19:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:19:11,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868660905] [2025-02-08 08:19:11,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:19:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:19:11,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:19:11,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:19:11,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:19:11,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:19:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:19:11,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:19:11,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868660905] [2025-02-08 08:19:11,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868660905] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:19:11,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:19:11,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:19:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628591949] [2025-02-08 08:19:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:19:11,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:19:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:19:11,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:19:11,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:19:11,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-02-08 08:19:11,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:19:11,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:19:11,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-02-08 08:19:11,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:19:16,411 INFO L124 PetriNetUnfolderBase]: 57803/76511 cut-off events. [2025-02-08 08:19:16,411 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2025-02-08 08:19:16,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152635 conditions, 76511 events. 57803/76511 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 2139. Compared 451912 event pairs, 6395 based on Foata normal form. 3456/79896 useless extension candidates. Maximal degree in co-relation 152623. Up to 66529 conditions per place. [2025-02-08 08:19:16,863 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 59 selfloop transitions, 2 changer transitions 2/71 dead transitions. [2025-02-08 08:19:16,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 280 flow [2025-02-08 08:19:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:19:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:19:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-08 08:19:16,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2025-02-08 08:19:16,874 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 104 transitions. [2025-02-08 08:19:16,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 280 flow [2025-02-08 08:19:16,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:19:16,882 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 104 flow [2025-02-08 08:19:16,884 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} [2025-02-08 08:19:16,886 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2025-02-08 08:19:16,886 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 104 flow [2025-02-08 08:19:16,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:19:16,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:19:16,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:19:16,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:19:16,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:19:16,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:19:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 887060593, now seen corresponding path program 1 times [2025-02-08 08:19:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:19:16,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234869820] [2025-02-08 08:19:16,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:19:16,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:19:16,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 08:19:16,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 08:19:16,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:19:16,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:19:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:19:16,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:19:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234869820] [2025-02-08 08:19:16,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234869820] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:19:16,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:19:16,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:19:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214021851] [2025-02-08 08:19:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:19:16,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:19:16,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:19:16,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:19:16,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:19:16,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-08 08:19:16,959 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) [2025-02-08 08:19:16,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:19:16,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-08 08:19:16,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:19:20,473 INFO L124 PetriNetUnfolderBase]: 51971/71759 cut-off events. [2025-02-08 08:19:20,474 INFO L125 PetriNetUnfolderBase]: For 1944/1944 co-relation queries the response was YES. [2025-02-08 08:19:20,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142265 conditions, 71759 events. 51971/71759 cut-off events. For 1944/1944 co-relation queries the response was YES. Maximal size of possible extension queue 2152. Compared 462013 event pairs, 51971 based on Foata normal form. 1728/73200 useless extension candidates. Maximal degree in co-relation 142255. Up to 68040 conditions per place. [2025-02-08 08:19:20,970 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 36 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2025-02-08 08:19:20,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 178 flow [2025-02-08 08:19:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:19:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:19:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-02-08 08:19:20,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-02-08 08:19:20,976 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 72 transitions. [2025-02-08 08:19:20,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 178 flow [2025-02-08 08:19:20,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:19:20,990 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 98 flow [2025-02-08 08:19:20,991 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} [2025-02-08 08:19:20,991 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2025-02-08 08:19:20,992 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 98 flow [2025-02-08 08:19:20,992 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) [2025-02-08 08:19:20,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:19:20,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:19:20,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:19:20,992 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:19:20,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:19:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash 887061712, now seen corresponding path program 1 times [2025-02-08 08:19:20,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:19:20,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520363035] [2025-02-08 08:19:20,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:19:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:19:21,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 08:19:21,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 08:19:21,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:19:21,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:19:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:19:21,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:19:21,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520363035] [2025-02-08 08:19:21,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520363035] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:19:21,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:19:21,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:19:21,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382932818] [2025-02-08 08:19:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:19:21,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:19:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:19:21,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:19:21,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:19:21,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-08 08:19:21,263 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) [2025-02-08 08:19:21,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:19:21,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-08 08:19:21,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:19:28,450 INFO L124 PetriNetUnfolderBase]: 110091/148475 cut-off events. [2025-02-08 08:19:28,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:19:28,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294341 conditions, 148475 events. 110091/148475 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4286. Compared 993541 event pairs, 29299 based on Foata normal form. 0/145577 useless extension candidates. Maximal degree in co-relation 294335. Up to 63683 conditions per place. [2025-02-08 08:19:29,081 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 64 selfloop transitions, 7 changer transitions 137/214 dead transitions. [2025-02-08 08:19:29,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 214 transitions, 860 flow [2025-02-08 08:19:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:19:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:19:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 309 transitions. [2025-02-08 08:19:29,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2025-02-08 08:19:29,083 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 98 flow. Second operand 9 states and 309 transitions. [2025-02-08 08:19:29,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 214 transitions, 860 flow [2025-02-08 08:19:29,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 214 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:19:29,088 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 193 flow [2025-02-08 08:19:29,088 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=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=193, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2025-02-08 08:19:29,088 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2025-02-08 08:19:29,088 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 193 flow [2025-02-08 08:19:29,089 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) [2025-02-08 08:19:29,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:19:29,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:19:29,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:19:29,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:19:29,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:19:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash -37806317, now seen corresponding path program 1 times [2025-02-08 08:19:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:19:29,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077629809] [2025-02-08 08:19:29,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:19:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:19:29,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:19:29,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:19:29,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:19:29,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:19:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:19:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:19:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077629809] [2025-02-08 08:19:29,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077629809] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:19:29,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:19:29,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:19:29,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480989278] [2025-02-08 08:19:29,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:19:29,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:19:29,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:19:29,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:19:29,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:19:29,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-08 08:19:29,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:19:29,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:19:29,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-08 08:19:29,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:19:35,800 INFO L124 PetriNetUnfolderBase]: 79609/109193 cut-off events. [2025-02-08 08:19:35,800 INFO L125 PetriNetUnfolderBase]: For 105618/105618 co-relation queries the response was YES. [2025-02-08 08:19:36,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293850 conditions, 109193 events. 79609/109193 cut-off events. For 105618/105618 co-relation queries the response was YES. Maximal size of possible extension queue 2913. Compared 714069 event pairs, 24139 based on Foata normal form. 2720/111854 useless extension candidates. Maximal degree in co-relation 293835. Up to 60681 conditions per place. [2025-02-08 08:19:36,696 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 62 selfloop transitions, 3 changer transitions 93/164 dead transitions. [2025-02-08 08:19:36,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 164 transitions, 997 flow [2025-02-08 08:19:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 08:19:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 08:19:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2025-02-08 08:19:36,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506493506493506 [2025-02-08 08:19:36,698 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 193 flow. Second operand 7 states and 212 transitions. [2025-02-08 08:19:36,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 164 transitions, 997 flow [2025-02-08 08:19:37,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 164 transitions, 877 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-02-08 08:19:37,726 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 182 flow [2025-02-08 08:19:37,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2025-02-08 08:19:37,727 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2025-02-08 08:19:37,727 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 182 flow [2025-02-08 08:19:37,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:19:37,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:19:37,728 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] [2025-02-08 08:19:37,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:19:37,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:19:37,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:19:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash 624549801, now seen corresponding path program 1 times [2025-02-08 08:19:37,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:19:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351167832] [2025-02-08 08:19:37,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:19:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:19:37,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 08:19:37,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 08:19:37,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:19:37,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:19:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:19:37,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:19:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351167832] [2025-02-08 08:19:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351167832] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:19:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:19:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:19:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58239353] [2025-02-08 08:19:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:19:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:19:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:19:37,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:19:37,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:19:37,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-08 08:19:37,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-02-08 08:19:37,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:19:37,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-08 08:19:37,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:19:43,934 INFO L124 PetriNetUnfolderBase]: 71861/97469 cut-off events. [2025-02-08 08:19:43,934 INFO L125 PetriNetUnfolderBase]: For 75921/75921 co-relation queries the response was YES. [2025-02-08 08:19:44,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252999 conditions, 97469 events. 71861/97469 cut-off events. For 75921/75921 co-relation queries the response was YES. Maximal size of possible extension queue 2480. Compared 630087 event pairs, 5789 based on Foata normal form. 1792/99244 useless extension candidates. Maximal degree in co-relation 252981. Up to 52187 conditions per place.