./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/test-hard1.wvr.c --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/weaver/test-hard1.wvr.c -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 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:44:24,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:44:24,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:44:24,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:44:24,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:44:24,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:44:24,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:44:24,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:44:24,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:44:24,427 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:44:24,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:44:24,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:44:24,427 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:44:24,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:44:24,427 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:44:24,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:44:24,427 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:44:24,428 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:44:24,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:44:24,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:44:24,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:44:24,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:44:24,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:44:24,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:44:24,429 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 -> 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 [2025-02-08 08:44:24,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:44:24,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:44:24,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:44:24,629 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:44:24,630 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:44:24,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-hard1.wvr.c [2025-02-08 08:44:25,698 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e605b67b1/44d4aefb33c0407caf7bcddc9ec35e56/FLAGddcd430ca [2025-02-08 08:44:25,954 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:44:25,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c [2025-02-08 08:44:25,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e605b67b1/44d4aefb33c0407caf7bcddc9ec35e56/FLAGddcd430ca [2025-02-08 08:44:26,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e605b67b1/44d4aefb33c0407caf7bcddc9ec35e56 [2025-02-08 08:44:26,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:44:26,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:44:26,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:44:26,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:44:26,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:44:26,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d1e95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26, skipping insertion in model container [2025-02-08 08:44:26,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:44:26,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:44:26,186 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:44:26,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:44:26,224 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:44:26,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26 WrapperNode [2025-02-08 08:44:26,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:44:26,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:44:26,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:44:26,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:44:26,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,258 INFO L138 Inliner]: procedures = 23, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2025-02-08 08:44:26,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:44:26,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:44:26,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:44:26,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:44:26,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,283 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 08:44:26,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:44:26,300 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:44:26,300 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:44:26,300 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:44:26,301 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (1/1) ... [2025-02-08 08:44:26,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:44:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:44:26,334 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 08:44:26,343 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 08:44:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:44:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:44:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:44:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:44:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:44:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:44:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:44:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 08:44:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 08:44:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:44:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:44:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:44:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:44:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:44:26,363 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 08:44:26,443 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:44:26,444 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:44:26,651 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:44:26,652 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:44:26,751 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:44:26,752 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:44:26,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:44:26 BoogieIcfgContainer [2025-02-08 08:44:26,752 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:44:26,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:44:26,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:44:26,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:44:26,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:44:26" (1/3) ... [2025-02-08 08:44:26,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62989090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:44:26, skipping insertion in model container [2025-02-08 08:44:26,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:44:26" (2/3) ... [2025-02-08 08:44:26,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62989090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:44:26, skipping insertion in model container [2025-02-08 08:44:26,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:44:26" (3/3) ... [2025-02-08 08:44:26,758 INFO L128 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2025-02-08 08:44:26,766 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:44:26,767 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-hard1.wvr.c that has 5 procedures, 43 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-02-08 08:44:26,767 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:44:26,809 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:44:26,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 120 flow [2025-02-08 08:44:26,866 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2025-02-08 08:44:26,867 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:44:26,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 42 events. 4/42 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-02-08 08:44:26,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 120 flow [2025-02-08 08:44:26,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 41 transitions, 106 flow [2025-02-08 08:44:26,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:44:26,883 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;@f87ef9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:44:26,883 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:44:26,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:44:26,892 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-02-08 08:44:26,892 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:44:26,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:26,893 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] [2025-02-08 08:44:26,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:44:26,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash -728375645, now seen corresponding path program 1 times [2025-02-08 08:44:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:26,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146250231] [2025-02-08 08:44:26,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:44:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:26,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 08:44:26,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 08:44:26,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:44:26,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:27,261 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 08:44:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146250231] [2025-02-08 08:44:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146250231] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:27,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:27,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:44:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614018535] [2025-02-08 08:44:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:27,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:44:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:27,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:44:27,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:44:27,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2025-02-08 08:44:27,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:44:27,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:27,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2025-02-08 08:44:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:27,767 INFO L124 PetriNetUnfolderBase]: 3331/4541 cut-off events. [2025-02-08 08:44:27,767 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2025-02-08 08:44:27,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9284 conditions, 4541 events. 3331/4541 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 20620 event pairs, 587 based on Foata normal form. 2/4476 useless extension candidates. Maximal degree in co-relation 8234. Up to 3534 conditions per place. [2025-02-08 08:44:27,794 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 47 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2025-02-08 08:44:27,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 275 flow [2025-02-08 08:44:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:44:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:44:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-08 08:44:27,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2025-02-08 08:44:27,805 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 3 states and 97 transitions. [2025-02-08 08:44:27,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 275 flow [2025-02-08 08:44:27,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 08:44:27,817 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 119 flow [2025-02-08 08:44:27,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2025-02-08 08:44:27,821 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2025-02-08 08:44:27,822 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 119 flow [2025-02-08 08:44:27,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 08:44:27,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:27,823 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, 1, 1] [2025-02-08 08:44:27,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:44:27,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:44:27,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash -97617646, now seen corresponding path program 1 times [2025-02-08 08:44:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:27,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115646252] [2025-02-08 08:44:27,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:44:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:27,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 08:44:27,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:44:27,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:44:27,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:28,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115646252] [2025-02-08 08:44:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115646252] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:28,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:44:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653814440] [2025-02-08 08:44:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:28,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:44:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:28,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:44:28,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:44:28,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-08 08:44:28,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 08:44:28,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:28,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-08 08:44:28,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:28,974 INFO L124 PetriNetUnfolderBase]: 7323/10064 cut-off events. [2025-02-08 08:44:28,974 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2025-02-08 08:44:28,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22908 conditions, 10064 events. 7323/10064 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 54999 event pairs, 1628 based on Foata normal form. 0/9517 useless extension candidates. Maximal degree in co-relation 6147. Up to 3843 conditions per place. [2025-02-08 08:44:29,025 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 120 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2025-02-08 08:44:29,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 145 transitions, 691 flow [2025-02-08 08:44:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:44:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:44:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2025-02-08 08:44:29,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2025-02-08 08:44:29,029 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 119 flow. Second operand 6 states and 198 transitions. [2025-02-08 08:44:29,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 145 transitions, 691 flow [2025-02-08 08:44:29,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 145 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:44:29,033 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 260 flow [2025-02-08 08:44:29,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2025-02-08 08:44:29,034 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2025-02-08 08:44:29,034 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 260 flow [2025-02-08 08:44:29,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 08:44:29,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:29,034 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, 1, 1] [2025-02-08 08:44:29,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:44:29,034 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:44:29,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:29,035 INFO L85 PathProgramCache]: Analyzing trace with hash 539512850, now seen corresponding path program 2 times [2025-02-08 08:44:29,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593965447] [2025-02-08 08:44:29,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:44:29,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:29,046 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 1 equivalence classes. [2025-02-08 08:44:29,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:44:29,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:44:29,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:29,273 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 08:44:29,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593965447] [2025-02-08 08:44:29,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593965447] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:29,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:29,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:44:29,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900096360] [2025-02-08 08:44:29,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:29,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:44:29,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:29,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:44:29,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:44:29,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-08 08:44:29,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 08:44:29,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:29,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-08 08:44:29,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:30,673 INFO L124 PetriNetUnfolderBase]: 14836/20638 cut-off events. [2025-02-08 08:44:30,674 INFO L125 PetriNetUnfolderBase]: For 22181/22181 co-relation queries the response was YES. [2025-02-08 08:44:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59749 conditions, 20638 events. 14836/20638 cut-off events. For 22181/22181 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 121678 event pairs, 509 based on Foata normal form. 580/21187 useless extension candidates. Maximal degree in co-relation 33530. Up to 8117 conditions per place. [2025-02-08 08:44:30,797 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 188 selfloop transitions, 21 changer transitions 0/217 dead transitions. [2025-02-08 08:44:30,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 217 transitions, 1425 flow [2025-02-08 08:44:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 08:44:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 08:44:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2025-02-08 08:44:30,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2025-02-08 08:44:30,799 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 260 flow. Second operand 7 states and 224 transitions. [2025-02-08 08:44:30,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 217 transitions, 1425 flow [2025-02-08 08:44:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 217 transitions, 1425 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:44:30,875 INFO L231 Difference]: Finished difference. Result has 63 places, 79 transitions, 428 flow [2025-02-08 08:44:30,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=63, PETRI_TRANSITIONS=79} [2025-02-08 08:44:30,876 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-02-08 08:44:30,876 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 79 transitions, 428 flow [2025-02-08 08:44:30,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 08:44:30,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:30,877 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, 1, 1] [2025-02-08 08:44:30,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:44:30,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:44:30,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 718422034, now seen corresponding path program 3 times [2025-02-08 08:44:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736434429] [2025-02-08 08:44:30,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:44:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:30,887 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 2 equivalence classes. [2025-02-08 08:44:30,898 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:44:30,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:44:30,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736434429] [2025-02-08 08:44:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736434429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:44:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537105833] [2025-02-08 08:44:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:31,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:44:31,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:31,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:44:31,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:44:31,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-08 08:44:31,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 79 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 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 08:44:31,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:31,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-08 08:44:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:33,232 INFO L124 PetriNetUnfolderBase]: 20046/28598 cut-off events. [2025-02-08 08:44:33,232 INFO L125 PetriNetUnfolderBase]: For 51093/51105 co-relation queries the response was YES. [2025-02-08 08:44:33,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95290 conditions, 28598 events. 20046/28598 cut-off events. For 51093/51105 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 184006 event pairs, 1227 based on Foata normal form. 248/28731 useless extension candidates. Maximal degree in co-relation 50589. Up to 7519 conditions per place. [2025-02-08 08:44:33,409 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 304 selfloop transitions, 47 changer transitions 0/359 dead transitions. [2025-02-08 08:44:33,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 359 transitions, 2664 flow [2025-02-08 08:44:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:44:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:44:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2025-02-08 08:44:33,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6620553359683794 [2025-02-08 08:44:33,412 INFO L175 Difference]: Start difference. First operand has 63 places, 79 transitions, 428 flow. Second operand 11 states and 335 transitions. [2025-02-08 08:44:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 359 transitions, 2664 flow [2025-02-08 08:44:33,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 359 transitions, 2664 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:44:33,585 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 801 flow [2025-02-08 08:44:33,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=801, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2025-02-08 08:44:33,586 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2025-02-08 08:44:33,586 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 801 flow [2025-02-08 08:44:33,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 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 08:44:33,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:33,586 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, 1, 1] [2025-02-08 08:44:33,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:44:33,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:44:33,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1159698702, now seen corresponding path program 1 times [2025-02-08 08:44:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786952176] [2025-02-08 08:44:33,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:44:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:33,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 08:44:33,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:44:33,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:44:33,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:33,779 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 08:44:33,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786952176] [2025-02-08 08:44:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786952176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:44:33,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:44:33,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:44:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172732315] [2025-02-08 08:44:33,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:44:33,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:44:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:33,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:44:33,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:44:33,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-08 08:44:33,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 801 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 08:44:33,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:33,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-08 08:44:33,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:37,341 INFO L124 PetriNetUnfolderBase]: 33063/46646 cut-off events. [2025-02-08 08:44:37,342 INFO L125 PetriNetUnfolderBase]: For 144038/144311 co-relation queries the response was YES. [2025-02-08 08:44:37,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175170 conditions, 46646 events. 33063/46646 cut-off events. For 144038/144311 co-relation queries the response was YES. Maximal size of possible extension queue 2315. Compared 310785 event pairs, 2910 based on Foata normal form. 841/47267 useless extension candidates. Maximal degree in co-relation 165110. Up to 23728 conditions per place. [2025-02-08 08:44:37,686 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 195 selfloop transitions, 182 changer transitions 0/386 dead transitions. [2025-02-08 08:44:37,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 386 transitions, 3734 flow [2025-02-08 08:44:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:44:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:44:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2025-02-08 08:44:37,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7065217391304348 [2025-02-08 08:44:37,687 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 801 flow. Second operand 8 states and 260 transitions. [2025-02-08 08:44:37,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 386 transitions, 3734 flow [2025-02-08 08:44:38,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 386 transitions, 3714 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-02-08 08:44:38,614 INFO L231 Difference]: Finished difference. Result has 94 places, 252 transitions, 2805 flow [2025-02-08 08:44:38,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2805, PETRI_PLACES=94, PETRI_TRANSITIONS=252} [2025-02-08 08:44:38,615 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2025-02-08 08:44:38,615 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 252 transitions, 2805 flow [2025-02-08 08:44:38,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 08:44:38,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:44:38,615 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, 1, 1] [2025-02-08 08:44:38,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:44:38,616 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:44:38,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:44:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 335271332, now seen corresponding path program 4 times [2025-02-08 08:44:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:44:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243103432] [2025-02-08 08:44:38,616 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:44:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:44:38,622 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-08 08:44:38,629 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:44:38,629 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:44:38,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:38,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:44:38,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243103432] [2025-02-08 08:44:38,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243103432] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:44:38,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104597101] [2025-02-08 08:44:38,836 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:44:38,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:44:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:44:38,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:44:38,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:44:38,881 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-08 08:44:38,899 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:44:38,899 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:44:38,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:44:38,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:44:38,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:44:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:39,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:44:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:44:39,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104597101] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:44:39,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:44:39,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 17 [2025-02-08 08:44:39,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851468302] [2025-02-08 08:44:39,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:44:39,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:44:39,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:44:39,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:44:39,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:44:39,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-02-08 08:44:39,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 252 transitions, 2805 flow. Second operand has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 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 08:44:39,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:44:39,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-02-08 08:44:39,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:44:53,169 INFO L124 PetriNetUnfolderBase]: 113630/158493 cut-off events. [2025-02-08 08:44:53,169 INFO L125 PetriNetUnfolderBase]: For 735101/735819 co-relation queries the response was YES. [2025-02-08 08:44:53,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698953 conditions, 158493 events. 113630/158493 cut-off events. For 735101/735819 co-relation queries the response was YES. Maximal size of possible extension queue 6968. Compared 1174823 event pairs, 4793 based on Foata normal form. 2235/160238 useless extension candidates. Maximal degree in co-relation 542495. Up to 41805 conditions per place. [2025-02-08 08:44:54,682 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 673 selfloop transitions, 813 changer transitions 6/1500 dead transitions. [2025-02-08 08:44:54,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 1500 transitions, 17278 flow [2025-02-08 08:44:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 08:44:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 08:44:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 927 transitions. [2025-02-08 08:44:54,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6949025487256372 [2025-02-08 08:44:54,687 INFO L175 Difference]: Start difference. First operand has 94 places, 252 transitions, 2805 flow. Second operand 29 states and 927 transitions. [2025-02-08 08:44:54,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 1500 transitions, 17278 flow [2025-02-08 08:45:18,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 1500 transitions, 17278 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:45:18,364 INFO L231 Difference]: Finished difference. Result has 145 places, 929 transitions, 14353 flow [2025-02-08 08:45:18,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14353, PETRI_PLACES=145, PETRI_TRANSITIONS=929} [2025-02-08 08:45:18,365 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 95 predicate places. [2025-02-08 08:45:18,365 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 929 transitions, 14353 flow [2025-02-08 08:45:18,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 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 08:45:18,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:45:18,365 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, 1, 1] [2025-02-08 08:45:18,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:45:18,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:45:18,566 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:45:18,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:45:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1263793086, now seen corresponding path program 2 times [2025-02-08 08:45:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:45:18,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329334304] [2025-02-08 08:45:18,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:45:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:45:18,572 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 1 equivalence classes. [2025-02-08 08:45:18,578 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:45:18,578 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:45:18,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:45:18,718 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 08:45:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:45:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329334304] [2025-02-08 08:45:18,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329334304] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:45:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:45:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:45:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055283699] [2025-02-08 08:45:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:45:18,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:45:18,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:45:18,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:45:18,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:45:18,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-08 08:45:18,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 929 transitions, 14353 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 08:45:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:45:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-08 08:45:18,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand