./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc 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-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:12:35,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:12:35,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:12:35,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:12:35,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:12:35,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:12:35,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:12:35,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:12:35,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:12:35,987 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:12:35,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:12:35,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:12:35,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:12:35,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:12:35,989 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:12:35,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:12:35,989 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:12:35,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:12:35,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:12:35,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:12:35,990 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:12:35,990 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:12:35,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:12:35,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:12:35,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:12:35,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:12:35,992 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 -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2025-02-06 13:12:36,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:12:36,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:12:36,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:12:36,222 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:12:36,222 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:12:36,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-02-06 13:12:37,528 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3f2ef7db3/3448138cf9444b2c99e53be4946cf884/FLAG4cdb8d1d2 [2025-02-06 13:12:37,824 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:12:37,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2025-02-06 13:12:37,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3f2ef7db3/3448138cf9444b2c99e53be4946cf884/FLAG4cdb8d1d2 [2025-02-06 13:12:38,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3f2ef7db3/3448138cf9444b2c99e53be4946cf884 [2025-02-06 13:12:38,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:12:38,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:12:38,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:12:38,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:12:38,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:12:38,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a157fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38, skipping insertion in model container [2025-02-06 13:12:38,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:12:38,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:12:38,254 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:12:38,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:12:38,292 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:12:38,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38 WrapperNode [2025-02-06 13:12:38,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:12:38,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:12:38,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:12:38,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:12:38,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,328 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 149 [2025-02-06 13:12:38,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:12:38,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:12:38,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:12:38,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:12:38,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,350 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]. [2025-02-06 13:12:38,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,357 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:12:38,360 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:12:38,360 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:12:38,360 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:12:38,361 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (1/1) ... [2025-02-06 13:12:38,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:12:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:12:38,390 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) [2025-02-06 13:12:38,393 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 [2025-02-06 13:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:12:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:12:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 13:12:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 13:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 13:12:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 13:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:12:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:12:38,412 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:12:38,480 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:12:38,482 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:12:38,746 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:12:38,747 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:12:38,864 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:12:38,865 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:12:38,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:12:38 BoogieIcfgContainer [2025-02-06 13:12:38,865 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:12:38,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:12:38,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:12:38,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:12:38,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:12:38" (1/3) ... [2025-02-06 13:12:38,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1838bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:12:38, skipping insertion in model container [2025-02-06 13:12:38,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:12:38" (2/3) ... [2025-02-06 13:12:38,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1838bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:12:38, skipping insertion in model container [2025-02-06 13:12:38,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:12:38" (3/3) ... [2025-02-06 13:12:38,874 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2025-02-06 13:12:38,883 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:12:38,884 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy10.wvr.c that has 5 procedures, 63 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 13:12:38,884 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:12:38,940 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 13:12:39,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 62 transitions, 152 flow [2025-02-06 13:12:39,055 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2025-02-06 13:12:39,061 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:12:39,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 0/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 13:12:39,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 62 transitions, 152 flow [2025-02-06 13:12:39,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 57 transitions, 138 flow [2025-02-06 13:12:39,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:12:39,095 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;@68311229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:12:39,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 13:12:39,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:12:39,120 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2025-02-06 13:12:39,120 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:12:39,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:12:39,122 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, 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] [2025-02-06 13:12:39,122 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)] === [2025-02-06 13:12:39,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:12:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2073192136, now seen corresponding path program 1 times [2025-02-06 13:12:39,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:12:39,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779560711] [2025-02-06 13:12:39,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:12:39,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:12:39,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 13:12:39,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:12:39,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:12:39,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:12:39,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:12:39,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779560711] [2025-02-06 13:12:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779560711] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:12:39,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:12:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:12:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971835541] [2025-02-06 13:12:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:12:39,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:12:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:12:39,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:12:39,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:12:39,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:12:39,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:39,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:12:39,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:12:39,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:12:41,828 INFO L124 PetriNetUnfolderBase]: 22838/30875 cut-off events. [2025-02-06 13:12:41,828 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2025-02-06 13:12:41,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63061 conditions, 30875 events. 22838/30875 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 170782 event pairs, 7169 based on Foata normal form. 441/31281 useless extension candidates. Maximal degree in co-relation 59981. Up to 24496 conditions per place. [2025-02-06 13:12:41,990 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-02-06 13:12:41,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 328 flow [2025-02-06 13:12:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:12:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:12:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-06 13:12:42,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2025-02-06 13:12:42,002 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 138 flow. Second operand 3 states and 104 transitions. [2025-02-06 13:12:42,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 328 flow [2025-02-06 13:12:42,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 13:12:42,030 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2025-02-06 13:12:42,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2025-02-06 13:12:42,035 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2025-02-06 13:12:42,035 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2025-02-06 13:12:42,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:42,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:12:42,036 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, 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] [2025-02-06 13:12:42,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:12:42,036 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)] === [2025-02-06 13:12:42,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:12:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1748958036, now seen corresponding path program 2 times [2025-02-06 13:12:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:12:42,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483502707] [2025-02-06 13:12:42,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:12:42,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:12:42,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-02-06 13:12:42,072 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:12:42,073 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:12:42,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:12:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:12:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483502707] [2025-02-06 13:12:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483502707] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:12:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:12:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:12:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720222605] [2025-02-06 13:12:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:12:42,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:12:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:12:42,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:12:42,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:12:42,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:12:42,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:42,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:12:42,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:12:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:12:43,524 INFO L124 PetriNetUnfolderBase]: 17539/23837 cut-off events. [2025-02-06 13:12:43,524 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2025-02-06 13:12:43,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49392 conditions, 23837 events. 17539/23837 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 123609 event pairs, 6369 based on Foata normal form. 434/24228 useless extension candidates. Maximal degree in co-relation 17479. Up to 17342 conditions per place. [2025-02-06 13:12:43,671 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 68 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-02-06 13:12:43,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 313 flow [2025-02-06 13:12:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:12:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:12:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-02-06 13:12:43,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2025-02-06 13:12:43,712 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 101 transitions. [2025-02-06 13:12:43,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 313 flow [2025-02-06 13:12:43,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:12:43,721 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2025-02-06 13:12:43,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-02-06 13:12:43,722 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2025-02-06 13:12:43,722 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2025-02-06 13:12:43,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:43,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:12:43,722 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, 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] [2025-02-06 13:12:43,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:12:43,722 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)] === [2025-02-06 13:12:43,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:12:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash -429923894, now seen corresponding path program 3 times [2025-02-06 13:12:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:12:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009854906] [2025-02-06 13:12:43,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:12:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:12:43,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 1 equivalence classes. [2025-02-06 13:12:43,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:12:43,930 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:12:43,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:12:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:12:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009854906] [2025-02-06 13:12:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009854906] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:12:45,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:12:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 13:12:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023963529] [2025-02-06 13:12:45,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:12:45,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:12:45,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:12:45,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:12:45,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:12:45,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:12:45,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:12:45,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:12:45,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:12:45,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:12:49,378 INFO L124 PetriNetUnfolderBase]: 43818/60147 cut-off events. [2025-02-06 13:12:49,381 INFO L125 PetriNetUnfolderBase]: For 4618/4618 co-relation queries the response was YES. [2025-02-06 13:12:49,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127496 conditions, 60147 events. 43818/60147 cut-off events. For 4618/4618 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 364938 event pairs, 5303 based on Foata normal form. 1/60125 useless extension candidates. Maximal degree in co-relation 25744. Up to 14408 conditions per place. [2025-02-06 13:12:49,624 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 251 selfloop transitions, 16 changer transitions 19/291 dead transitions. [2025-02-06 13:12:49,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 291 transitions, 1271 flow [2025-02-06 13:12:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 13:12:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 13:12:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 437 transitions. [2025-02-06 13:12:49,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4698924731182796 [2025-02-06 13:12:49,630 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 15 states and 437 transitions. [2025-02-06 13:12:49,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 291 transitions, 1271 flow [2025-02-06 13:12:49,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 291 transitions, 1251 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:12:49,657 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 250 flow [2025-02-06 13:12:49,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2025-02-06 13:12:49,659 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2025-02-06 13:12:49,659 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 250 flow [2025-02-06 13:12:49,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:12:49,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:12:49,660 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, 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] [2025-02-06 13:12:49,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:12:49,660 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)] === [2025-02-06 13:12:49,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:12:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash 441856100, now seen corresponding path program 4 times [2025-02-06 13:12:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:12:49,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401709132] [2025-02-06 13:12:49,661 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:12:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:12:49,671 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-06 13:12:49,678 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:12:49,678 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:12:49,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:12:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:12:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401709132] [2025-02-06 13:12:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401709132] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:12:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:12:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:12:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133687657] [2025-02-06 13:12:49,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:12:49,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:12:49,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:12:49,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:12:49,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:12:49,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:12:49,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:49,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:12:49,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:12:49,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:12:52,210 INFO L124 PetriNetUnfolderBase]: 35366/48902 cut-off events. [2025-02-06 13:12:52,211 INFO L125 PetriNetUnfolderBase]: For 33403/33403 co-relation queries the response was YES. [2025-02-06 13:12:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131387 conditions, 48902 events. 35366/48902 cut-off events. For 33403/33403 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 291087 event pairs, 14368 based on Foata normal form. 540/49409 useless extension candidates. Maximal degree in co-relation 131342. Up to 42949 conditions per place. [2025-02-06 13:12:52,603 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 86 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2025-02-06 13:12:52,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 503 flow [2025-02-06 13:12:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:12:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:12:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-02-06 13:12:52,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2025-02-06 13:12:52,605 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 250 flow. Second operand 3 states and 105 transitions. [2025-02-06 13:12:52,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 503 flow [2025-02-06 13:12:53,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 487 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-06 13:12:53,174 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 234 flow [2025-02-06 13:12:53,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-02-06 13:12:53,175 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2025-02-06 13:12:53,175 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 234 flow [2025-02-06 13:12:53,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:53,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:12:53,176 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, 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] [2025-02-06 13:12:53,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:12:53,176 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)] === [2025-02-06 13:12:53,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:12:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2108773478, now seen corresponding path program 5 times [2025-02-06 13:12:53,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:12:53,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774165581] [2025-02-06 13:12:53,177 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:12:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:12:53,187 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 1 equivalence classes. [2025-02-06 13:12:53,227 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:12:53,228 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:12:53,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:12:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:12:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774165581] [2025-02-06 13:12:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774165581] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:12:54,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:12:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 13:12:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35090918] [2025-02-06 13:12:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:12:54,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:12:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:12:54,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:12:54,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:12:54,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:12:54,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:12:54,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:12:54,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:12:54,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:13:00,817 INFO L124 PetriNetUnfolderBase]: 65121/91304 cut-off events. [2025-02-06 13:13:00,817 INFO L125 PetriNetUnfolderBase]: For 52925/52925 co-relation queries the response was YES. [2025-02-06 13:13:01,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239409 conditions, 91304 events. 65121/91304 cut-off events. For 52925/52925 co-relation queries the response was YES. Maximal size of possible extension queue 2105. Compared 601414 event pairs, 9909 based on Foata normal form. 1/91278 useless extension candidates. Maximal degree in co-relation 181201. Up to 28006 conditions per place. [2025-02-06 13:13:01,349 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 290 selfloop transitions, 27 changer transitions 10/332 dead transitions. [2025-02-06 13:13:01,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 1834 flow [2025-02-06 13:13:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 13:13:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 13:13:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 431 transitions. [2025-02-06 13:13:01,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46344086021505376 [2025-02-06 13:13:01,351 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 234 flow. Second operand 15 states and 431 transitions. [2025-02-06 13:13:01,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 1834 flow [2025-02-06 13:13:02,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 332 transitions, 1814 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:13:02,023 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 482 flow [2025-02-06 13:13:02,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=482, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2025-02-06 13:13:02,024 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 39 predicate places. [2025-02-06 13:13:02,024 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 482 flow [2025-02-06 13:13:02,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:13:02,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:13:02,024 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, 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] [2025-02-06 13:13:02,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:13:02,025 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)] === [2025-02-06 13:13:02,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:13:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1512937002, now seen corresponding path program 6 times [2025-02-06 13:13:02,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:13:02,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527093077] [2025-02-06 13:13:02,025 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:13:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:13:02,031 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 1 equivalence classes. [2025-02-06 13:13:02,062 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:13:02,062 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 13:13:02,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:13:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:13:03,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:13:03,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527093077] [2025-02-06 13:13:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527093077] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:13:03,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:13:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 13:13:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403957671] [2025-02-06 13:13:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:13:03,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:13:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:13:03,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:13:03,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:13:03,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:13:03,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 482 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:13:03,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:13:03,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:13:03,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:13:12,947 INFO L124 PetriNetUnfolderBase]: 95501/134922 cut-off events. [2025-02-06 13:13:12,947 INFO L125 PetriNetUnfolderBase]: For 206860/206860 co-relation queries the response was YES. [2025-02-06 13:13:13,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410357 conditions, 134922 events. 95501/134922 cut-off events. For 206860/206860 co-relation queries the response was YES. Maximal size of possible extension queue 3112. Compared 945014 event pairs, 15614 based on Foata normal form. 1/134900 useless extension candidates. Maximal degree in co-relation 410009. Up to 36303 conditions per place. [2025-02-06 13:13:14,057 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 310 selfloop transitions, 47 changer transitions 11/373 dead transitions. [2025-02-06 13:13:14,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 373 transitions, 2595 flow [2025-02-06 13:13:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 13:13:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 13:13:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 428 transitions. [2025-02-06 13:13:14,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46021505376344085 [2025-02-06 13:13:14,059 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 482 flow. Second operand 15 states and 428 transitions. [2025-02-06 13:13:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 373 transitions, 2595 flow [2025-02-06 13:13:19,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 373 transitions, 2557 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-02-06 13:13:19,464 INFO L231 Difference]: Finished difference. Result has 131 places, 120 transitions, 976 flow [2025-02-06 13:13:19,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=976, PETRI_PLACES=131, PETRI_TRANSITIONS=120} [2025-02-06 13:13:19,465 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 61 predicate places. [2025-02-06 13:13:19,465 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 120 transitions, 976 flow [2025-02-06 13:13:19,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:13:19,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:13:19,466 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, 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] [2025-02-06 13:13:19,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:13:19,466 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)] === [2025-02-06 13:13:19,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:13:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash 54376220, now seen corresponding path program 7 times [2025-02-06 13:13:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:13:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960714533] [2025-02-06 13:13:19,469 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:13:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:13:19,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 13:13:19,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 13:13:19,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:13:19,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:13:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:13:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:13:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960714533] [2025-02-06 13:13:20,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960714533] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:13:20,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:13:20,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 13:13:20,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284420169] [2025-02-06 13:13:20,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:13:20,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:13:20,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:13:20,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:13:20,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:13:20,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2025-02-06 13:13:20,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 120 transitions, 976 flow. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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) [2025-02-06 13:13:20,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:13:20,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2025-02-06 13:13:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand