./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/chl-file-item-subst.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/chl-file-item-subst.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 d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:01:45,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:01:45,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:01:45,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:01:45,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:01:45,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:01:45,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:01:45,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:01:45,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:01:45,925 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:01:45,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:01:45,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:01:45,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:01:45,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:01:45,926 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:01:45,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:01:45,927 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:01:45,928 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:01:45,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:01:45,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:01:45,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:01:45,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:01:45,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:01:45,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:01:45,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:01:45,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:01:45,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:01:45,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:01:45,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:01:45,930 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 -> d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 [2025-02-06 13:01:46,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:01:46,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:01:46,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:01:46,234 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:01:46,234 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:01:46,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2025-02-06 13:01:47,540 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dc16ecc3a/e4536aec603349c9a2c2b5d3f5e64773/FLAGb51bbe49a [2025-02-06 13:01:47,919 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:01:47,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2025-02-06 13:01:47,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dc16ecc3a/e4536aec603349c9a2c2b5d3f5e64773/FLAGb51bbe49a [2025-02-06 13:01:48,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dc16ecc3a/e4536aec603349c9a2c2b5d3f5e64773 [2025-02-06 13:01:48,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:01:48,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:01:48,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:01:48,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:01:48,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:01:48,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a328d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48, skipping insertion in model container [2025-02-06 13:01:48,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:01:48,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:01:48,343 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:01:48,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:01:48,385 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:01:48,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48 WrapperNode [2025-02-06 13:01:48,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:01:48,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:01:48,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:01:48,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:01:48,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,432 INFO L138 Inliner]: procedures = 22, calls = 17, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 198 [2025-02-06 13:01:48,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:01:48,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:01:48,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:01:48,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:01:48,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,457 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 13:01:48,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,464 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:01:48,475 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:01:48,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:01:48,476 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:01:48,477 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (1/1) ... [2025-02-06 13:01:48,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:01:48,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:01:48,507 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 13:01:48,513 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 13:01:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:01:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:01:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:01:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 13:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 13:01:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:01:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:01:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:01:48,532 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 13:01:48,625 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:01:48,626 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:01:49,060 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:01:49,060 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:01:49,479 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:01:49,480 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:01:49,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:01:49 BoogieIcfgContainer [2025-02-06 13:01:49,480 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:01:49,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:01:49,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:01:49,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:01:49,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:01:48" (1/3) ... [2025-02-06 13:01:49,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53be1ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:01:49, skipping insertion in model container [2025-02-06 13:01:49,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:01:48" (2/3) ... [2025-02-06 13:01:49,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53be1ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:01:49, skipping insertion in model container [2025-02-06 13:01:49,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:01:49" (3/3) ... [2025-02-06 13:01:49,490 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2025-02-06 13:01:49,504 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:01:49,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-file-item-subst.wvr.c that has 4 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 13:01:49,508 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:01:49,583 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 13:01:49,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2025-02-06 13:01:49,651 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2025-02-06 13:01:49,653 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 13:01:49,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 13:01:49,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2025-02-06 13:01:49,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2025-02-06 13:01:49,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:01:49,680 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;@73d0c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:01:49,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 13:01:49,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:01:49,708 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-02-06 13:01:49,709 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 13:01:49,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:01:49,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:01:49,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:01:49,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:01:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash -947526809, now seen corresponding path program 1 times [2025-02-06 13:01:49,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:01:49,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471380064] [2025-02-06 13:01:49,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:01:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:01:49,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:01:50,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:01:50,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:01:50,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:01:53,817 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 13:01:53,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:01:53,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471380064] [2025-02-06 13:01:53,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471380064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:01:53,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:01:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:01:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29652131] [2025-02-06 13:01:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:01:53,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:01:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:01:53,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:01:53,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:01:53,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 13:01:53,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:01:53,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:01:53,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 13:01:53,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:01:54,443 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2025-02-06 13:01:54,443 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-02-06 13:01:54,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 85 events. 32/85 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 1 based on Foata normal form. 3/88 useless extension candidates. Maximal degree in co-relation 145. Up to 34 conditions per place. [2025-02-06 13:01:54,446 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2025-02-06 13:01:54,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2025-02-06 13:01:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:01:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:01:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2025-02-06 13:01:54,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 13:01:54,459 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 70 transitions. [2025-02-06 13:01:54,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2025-02-06 13:01:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 13:01:54,465 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2025-02-06 13:01:54,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2025-02-06 13:01:54,472 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2025-02-06 13:01:54,473 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2025-02-06 13:01:54,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:01:54,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:01:54,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:01:54,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:01:54,475 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:01:54,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:01:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1823206019, now seen corresponding path program 2 times [2025-02-06 13:01:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:01:54,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019774421] [2025-02-06 13:01:54,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:01:54,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:01:54,492 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:01:54,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:01:54,564 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:01:54,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:01:56,833 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 13:01:56,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:01:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019774421] [2025-02-06 13:01:56,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019774421] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:01:56,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:01:56,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:01:56,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627315461] [2025-02-06 13:01:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:01:56,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:01:56,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:01:56,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:01:56,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:01:56,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 13:01:56,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:01:56,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:01:56,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 13:01:56,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:01:57,308 INFO L124 PetriNetUnfolderBase]: 31/97 cut-off events. [2025-02-06 13:01:57,308 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2025-02-06 13:01:57,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 97 events. 31/97 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 318 event pairs, 3 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2025-02-06 13:01:57,311 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 26 selfloop transitions, 7 changer transitions 7/41 dead transitions. [2025-02-06 13:01:57,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 213 flow [2025-02-06 13:01:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:01:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:01:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2025-02-06 13:01:57,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 13:01:57,315 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 6 states and 70 transitions. [2025-02-06 13:01:57,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 213 flow [2025-02-06 13:01:57,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 209 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 13:01:57,318 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 98 flow [2025-02-06 13:01:57,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2025-02-06 13:01:57,319 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2025-02-06 13:01:57,320 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 98 flow [2025-02-06 13:01:57,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:01:57,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:01:57,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:01:57,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:01:57,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:01:57,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:01:57,322 INFO L85 PathProgramCache]: Analyzing trace with hash -943775699, now seen corresponding path program 3 times [2025-02-06 13:01:57,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:01:57,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854020151] [2025-02-06 13:01:57,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:01:57,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:01:57,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:01:57,441 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:01:57,441 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:01:57,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:01:59,644 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 13:01:59,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:01:59,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854020151] [2025-02-06 13:01:59,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854020151] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:01:59,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:01:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:01:59,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231717751] [2025-02-06 13:01:59,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:01:59,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:01:59,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:01:59,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:01:59,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:01:59,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 13:01:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 13:01:59,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:01:59,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 13:01:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:02:00,452 INFO L124 PetriNetUnfolderBase]: 28/87 cut-off events. [2025-02-06 13:02:00,453 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-02-06 13:02:00,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 87 events. 28/87 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 267 event pairs, 1 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 284. Up to 42 conditions per place. [2025-02-06 13:02:00,454 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 23 selfloop transitions, 6 changer transitions 9/39 dead transitions. [2025-02-06 13:02:00,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 235 flow [2025-02-06 13:02:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:02:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:02:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2025-02-06 13:02:00,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2025-02-06 13:02:00,458 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 98 flow. Second operand 7 states and 73 transitions. [2025-02-06 13:02:00,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 235 flow [2025-02-06 13:02:00,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 221 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 13:02:00,462 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 98 flow [2025-02-06 13:02:00,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2025-02-06 13:02:00,464 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2025-02-06 13:02:00,465 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 98 flow [2025-02-06 13:02:00,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 13:02:00,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:02:00,465 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:02:00,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:02:00,465 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:02:00,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:02:00,466 INFO L85 PathProgramCache]: Analyzing trace with hash -967899365, now seen corresponding path program 4 times [2025-02-06 13:02:00,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:02:00,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761683160] [2025-02-06 13:02:00,467 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:02:00,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:02:00,478 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-06 13:02:00,501 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:02:00,502 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:02:00,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:02:02,214 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 13:02:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:02:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761683160] [2025-02-06 13:02:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761683160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:02:02,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:02:02,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:02:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654916518] [2025-02-06 13:02:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:02:02,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:02:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:02:02,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:02:02,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:02:02,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 13:02:02,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:02:02,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:02:02,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 13:02:02,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:02:02,728 INFO L124 PetriNetUnfolderBase]: 15/51 cut-off events. [2025-02-06 13:02:02,729 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2025-02-06 13:02:02,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 51 events. 15/51 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 179. Up to 16 conditions per place. [2025-02-06 13:02:02,732 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 16 selfloop transitions, 5 changer transitions 10/32 dead transitions. [2025-02-06 13:02:02,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 201 flow [2025-02-06 13:02:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:02:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:02:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2025-02-06 13:02:02,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2025-02-06 13:02:02,735 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 98 flow. Second operand 6 states and 61 transitions. [2025-02-06 13:02:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 201 flow [2025-02-06 13:02:02,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 179 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-02-06 13:02:02,739 INFO L231 Difference]: Finished difference. Result has 35 places, 17 transitions, 76 flow [2025-02-06 13:02:02,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2025-02-06 13:02:02,741 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2025-02-06 13:02:02,742 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 76 flow [2025-02-06 13:02:02,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:02:02,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:02:02,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:02:02,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:02:02,742 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:02:02,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:02:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash 493349185, now seen corresponding path program 5 times [2025-02-06 13:02:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:02:02,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730767718] [2025-02-06 13:02:02,743 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:02:02,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:02:02,757 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:02:02,816 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:02:02,816 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:02:02,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:02:05,221 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 13:02:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:02:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730767718] [2025-02-06 13:02:05,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730767718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:02:05,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:02:05,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:02:05,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832498494] [2025-02-06 13:02:05,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:02:05,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:02:05,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:02:05,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:02:05,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:02:05,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 13:02:05,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 13:02:05,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:02:05,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 13:02:05,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:02:06,230 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2025-02-06 13:02:06,230 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-06 13:02:06,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 37 events. 8/37 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 125. Up to 17 conditions per place. [2025-02-06 13:02:06,231 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2025-02-06 13:02:06,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 160 flow [2025-02-06 13:02:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:02:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:02:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2025-02-06 13:02:06,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-02-06 13:02:06,232 INFO L175 Difference]: Start difference. First operand has 35 places, 17 transitions, 76 flow. Second operand 7 states and 62 transitions. [2025-02-06 13:02:06,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 160 flow [2025-02-06 13:02:06,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 130 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-02-06 13:02:06,233 INFO L231 Difference]: Finished difference. Result has 33 places, 15 transitions, 54 flow [2025-02-06 13:02:06,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2025-02-06 13:02:06,234 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2025-02-06 13:02:06,234 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 54 flow [2025-02-06 13:02:06,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 13:02:06,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:02:06,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:02:06,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:02:06,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:02:06,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:02:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1348655839, now seen corresponding path program 6 times [2025-02-06 13:02:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:02:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600051167] [2025-02-06 13:02:06,235 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:02:06,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:02:06,249 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:02:06,285 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:02:06,285 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 13:02:06,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:02:07,848 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 13:02:07,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:02:07,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600051167] [2025-02-06 13:02:07,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600051167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:02:07,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:02:07,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:02:07,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165263370] [2025-02-06 13:02:07,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:02:07,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:02:07,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:02:07,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:02:07,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:02:07,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 13:02:07,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 15 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:02:07,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:02:07,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 13:02:07,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:02:08,324 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2025-02-06 13:02:08,324 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 13:02:08,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 19 events. 3/19 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2025-02-06 13:02:08,324 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2025-02-06 13:02:08,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 16 transitions, 86 flow [2025-02-06 13:02:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:02:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:02:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2025-02-06 13:02:08,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2025-02-06 13:02:08,325 INFO L175 Difference]: Start difference. First operand has 33 places, 15 transitions, 54 flow. Second operand 6 states and 47 transitions. [2025-02-06 13:02:08,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 16 transitions, 86 flow [2025-02-06 13:02:08,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 71 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-06 13:02:08,326 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2025-02-06 13:02:08,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2025-02-06 13:02:08,327 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2025-02-06 13:02:08,327 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2025-02-06 13:02:08,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:02:08,332 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-02-06 13:02:08,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-06 13:02:08,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-06 13:02:08,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-02-06 13:02:08,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-02-06 13:02:08,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:02:08,336 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-02-06 13:02:08,339 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 13:02:08,339 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 13:02:08,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 01:02:08 BasicIcfg [2025-02-06 13:02:08,346 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 13:02:08,347 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 13:02:08,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 13:02:08,347 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 13:02:08,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:01:49" (3/4) ... [2025-02-06 13:02:08,349 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 13:02:08,352 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-06 13:02:08,352 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-06 13:02:08,352 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-02-06 13:02:08,357 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2025-02-06 13:02:08,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-02-06 13:02:08,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-02-06 13:02:08,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 13:02:08,435 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 13:02:08,436 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 13:02:08,436 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 13:02:08,436 INFO L158 Benchmark]: Toolchain (without parser) took 20299.29ms. Allocated memory was 142.6MB in the beginning and 612.4MB in the end (delta: 469.8MB). Free memory was 105.0MB in the beginning and 342.7MB in the end (delta: -237.7MB). Peak memory consumption was 228.9MB. Max. memory is 16.1GB. [2025-02-06 13:02:08,437 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 201.3MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:02:08,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.63ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 93.6MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 13:02:08,438 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.56ms. Allocated memory is still 142.6MB. Free memory was 93.6MB in the beginning and 91.4MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 13:02:08,438 INFO L158 Benchmark]: Boogie Preprocessor took 40.78ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 89.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:02:08,439 INFO L158 Benchmark]: IcfgBuilder took 1005.23ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 71.9MB in the end (delta: 17.5MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2025-02-06 13:02:08,439 INFO L158 Benchmark]: TraceAbstraction took 18863.46ms. Allocated memory was 142.6MB in the beginning and 612.4MB in the end (delta: 469.8MB). Free memory was 71.1MB in the beginning and 346.9MB in the end (delta: -275.8MB). Peak memory consumption was 198.2MB. Max. memory is 16.1GB. [2025-02-06 13:02:08,439 INFO L158 Benchmark]: Witness Printer took 89.13ms. Allocated memory is still 612.4MB. Free memory was 346.9MB in the beginning and 342.7MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:02:08,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 201.3MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.63ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 93.6MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.56ms. Allocated memory is still 142.6MB. Free memory was 93.6MB in the beginning and 91.4MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.78ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 89.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1005.23ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 71.9MB in the end (delta: 17.5MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. * TraceAbstraction took 18863.46ms. Allocated memory was 142.6MB in the beginning and 612.4MB in the end (delta: 469.8MB). Free memory was 71.1MB in the beginning and 346.9MB in the end (delta: -275.8MB). Peak memory consumption was 198.2MB. Max. memory is 16.1GB. * Witness Printer took 89.13ms. Allocated memory is still 612.4MB. Free memory was 346.9MB in the beginning and 342.7MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 31 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 3898 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 13:02:08,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE