./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 846f3fa2b3520d0013071e1a40d4401eee84eafe31e419bacc7c09bfb8abae71 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:17:00,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:17:00,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:17:00,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:17:00,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:17:00,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:17:00,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:17:00,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:17:00,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:17:00,280 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:17:00,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:17:00,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:17:00,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:17:00,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:17:00,280 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:17:00,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:17:00,280 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:17:00,281 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:17:00,282 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:17:00,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:17:00,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:17:00,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:17:00,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:17:00,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:17:00,283 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846f3fa2b3520d0013071e1a40d4401eee84eafe31e419bacc7c09bfb8abae71 [2025-03-04 10:17:00,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:17:00,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:17:00,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:17:00,556 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:17:00,557 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:17:00,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2025-03-04 10:17:01,696 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3eaf7c0/3fe1ceef03a448e9ae5de0c711d8137e/FLAG2d2163ae0 [2025-03-04 10:17:01,919 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:17:01,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2025-03-04 10:17:01,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3eaf7c0/3fe1ceef03a448e9ae5de0c711d8137e/FLAG2d2163ae0 [2025-03-04 10:17:02,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3eaf7c0/3fe1ceef03a448e9ae5de0c711d8137e [2025-03-04 10:17:02,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:17:02,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:17:02,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:17:02,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:17:02,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:17:02,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a8b292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02, skipping insertion in model container [2025-03-04 10:17:02,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:17:02,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:17:02,424 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:17:02,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:17:02,456 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:17:02,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02 WrapperNode [2025-03-04 10:17:02,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:17:02,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:17:02,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:17:02,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:17:02,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,481 INFO L138 Inliner]: procedures = 20, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2025-03-04 10:17:02,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:17:02,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:17:02,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:17:02,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:17:02,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,496 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 10:17:02,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,501 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:17:02,505 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:17:02,505 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:17:02,505 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:17:02,506 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (1/1) ... [2025-03-04 10:17:02,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:17:02,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:02,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 10:17:02,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 10:17:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 10:17:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 10:17:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 10:17:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:17:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:17:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:17:02,555 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:17:02,613 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:17:02,615 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:17:02,761 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:17:02,762 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:17:02,826 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:17:02,827 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:17:02,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:17:02 BoogieIcfgContainer [2025-03-04 10:17:02,827 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:17:02,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:17:02,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:17:02,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:17:02,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:17:02" (1/3) ... [2025-03-04 10:17:02,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6bc5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:17:02, skipping insertion in model container [2025-03-04 10:17:02,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:02" (2/3) ... [2025-03-04 10:17:02,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6bc5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:17:02, skipping insertion in model container [2025-03-04 10:17:02,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:17:02" (3/3) ... [2025-03-04 10:17:02,834 INFO L128 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2025-03-04 10:17:02,844 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:17:02,845 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG spaghetti.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-03-04 10:17:02,845 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:17:02,903 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 10:17:02,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 160 flow [2025-03-04 10:17:02,961 INFO L124 PetriNetUnfolderBase]: 8/62 cut-off events. [2025-03-04 10:17:02,963 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 10:17:02,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 62 events. 8/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2025-03-04 10:17:02,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 66 transitions, 160 flow [2025-03-04 10:17:02,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 61 transitions, 146 flow [2025-03-04 10:17:02,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:17:02,986 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;@26a18b02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:17:02,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 10:17:03,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:17:03,002 INFO L124 PetriNetUnfolderBase]: 8/58 cut-off events. [2025-03-04 10:17:03,002 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 10:17:03,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:03,003 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] [2025-03-04 10:17:03,003 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)] === [2025-03-04 10:17:03,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash -201212214, now seen corresponding path program 1 times [2025-03-04 10:17:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:03,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889098543] [2025-03-04 10:17:03,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:03,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-04 10:17:03,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 10:17:03,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:03,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:03,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889098543] [2025-03-04 10:17:03,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889098543] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:03,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:03,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:17:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552990507] [2025-03-04 10:17:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:03,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 10:17:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:03,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 10:17:03,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 10:17:03,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2025-03-04 10:17:03,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:03,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:03,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2025-03-04 10:17:03,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:06,071 INFO L124 PetriNetUnfolderBase]: 42002/54930 cut-off events. [2025-03-04 10:17:06,072 INFO L125 PetriNetUnfolderBase]: For 2448/2448 co-relation queries the response was YES. [2025-03-04 10:17:06,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111463 conditions, 54930 events. 42002/54930 cut-off events. For 2448/2448 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 306773 event pairs, 36394 based on Foata normal form. 1/48975 useless extension candidates. Maximal degree in co-relation 105709. Up to 54411 conditions per place. [2025-03-04 10:17:06,321 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 48 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2025-03-04 10:17:06,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 230 flow [2025-03-04 10:17:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 10:17:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 10:17:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2025-03-04 10:17:06,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-04 10:17:06,334 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 146 flow. Second operand 2 states and 77 transitions. [2025-03-04 10:17:06,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 230 flow [2025-03-04 10:17:06,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 214 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-04 10:17:06,410 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 118 flow [2025-03-04 10:17:06,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2025-03-04 10:17:06,414 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2025-03-04 10:17:06,415 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 118 flow [2025-03-04 10:17:06,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:06,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:06,416 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] [2025-03-04 10:17:06,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:17:06,417 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)] === [2025-03-04 10:17:06,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash -638873384, now seen corresponding path program 1 times [2025-03-04 10:17:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260170803] [2025-03-04 10:17:06,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:06,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 10:17:06,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 10:17:06,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:06,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260170803] [2025-03-04 10:17:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260170803] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:17:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476261210] [2025-03-04 10:17:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:06,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:17:06,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:06,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:17:06,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:17:06,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2025-03-04 10:17:06,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:06,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:06,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2025-03-04 10:17:06,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:09,241 INFO L124 PetriNetUnfolderBase]: 53824/70831 cut-off events. [2025-03-04 10:17:09,242 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2025-03-04 10:17:09,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142161 conditions, 70831 events. 53824/70831 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 420221 event pairs, 24547 based on Foata normal form. 1/63644 useless extension candidates. Maximal degree in co-relation 142158. Up to 38839 conditions per place. [2025-03-04 10:17:09,456 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 94 selfloop transitions, 12 changer transitions 15/128 dead transitions. [2025-03-04 10:17:09,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 128 transitions, 514 flow [2025-03-04 10:17:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:17:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:17:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2025-03-04 10:17:09,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-04 10:17:09,458 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 118 flow. Second operand 4 states and 170 transitions. [2025-03-04 10:17:09,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 128 transitions, 514 flow [2025-03-04 10:17:09,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 128 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 10:17:09,462 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 204 flow [2025-03-04 10:17:09,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2025-03-04 10:17:09,463 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2025-03-04 10:17:09,463 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 204 flow [2025-03-04 10:17:09,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:09,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:09,463 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] [2025-03-04 10:17:09,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:17:09,464 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)] === [2025-03-04 10:17:09,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2091073522, now seen corresponding path program 2 times [2025-03-04 10:17:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576436684] [2025-03-04 10:17:09,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:09,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 1 equivalence classes. [2025-03-04 10:17:09,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 10:17:09,490 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:17:09,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576436684] [2025-03-04 10:17:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576436684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:09,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:09,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:17:09,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246840430] [2025-03-04 10:17:09,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:09,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:17:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:09,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:17:09,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:17:09,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2025-03-04 10:17:09,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:09,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:09,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2025-03-04 10:17:09,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:12,396 INFO L124 PetriNetUnfolderBase]: 61512/81632 cut-off events. [2025-03-04 10:17:12,396 INFO L125 PetriNetUnfolderBase]: For 21788/21788 co-relation queries the response was YES. [2025-03-04 10:17:12,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184925 conditions, 81632 events. 61512/81632 cut-off events. For 21788/21788 co-relation queries the response was YES. Maximal size of possible extension queue 2701. Compared 493331 event pairs, 28829 based on Foata normal form. 1/73419 useless extension candidates. Maximal degree in co-relation 184919. Up to 46990 conditions per place. [2025-03-04 10:17:12,550 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 0 selfloop transitions, 0 changer transitions 142/142 dead transitions. [2025-03-04 10:17:12,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 142 transitions, 704 flow [2025-03-04 10:17:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:17:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:17:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2025-03-04 10:17:12,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-03-04 10:17:12,554 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 204 flow. Second operand 4 states and 167 transitions. [2025-03-04 10:17:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 142 transitions, 704 flow [2025-03-04 10:17:12,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 704 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 10:17:12,578 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2025-03-04 10:17:12,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2025-03-04 10:17:12,579 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2025-03-04 10:17:12,579 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2025-03-04 10:17:12,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:17:12,582 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-03-04 10:17:12,582 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-03-04 10:17:12,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-03-04 10:17:12,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-04 10:17:12,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2025-03-04 10:17:12,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2025-03-04 10:17:12,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:17:12,583 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-03-04 10:17:12,587 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:17:12,587 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:17:12,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:17:12 BasicIcfg [2025-03-04 10:17:12,594 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:17:12,595 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:17:12,595 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:17:12,595 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:17:12,596 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:17:02" (3/4) ... [2025-03-04 10:17:12,598 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:17:12,600 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 10:17:12,600 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 10:17:12,601 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-04 10:17:12,601 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread4 [2025-03-04 10:17:12,604 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-03-04 10:17:12,604 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 10:17:12,604 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 10:17:12,604 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 10:17:12,658 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:17:12,659 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:17:12,659 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:17:12,660 INFO L158 Benchmark]: Toolchain (without parser) took 10385.86ms. Allocated memory was 167.8MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 124.4MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2025-03-04 10:17:12,661 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:17:12,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.00ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 113.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:17:12,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.16ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 112.3MB in the end (delta: 989.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:17:12,662 INFO L158 Benchmark]: Boogie Preprocessor took 22.69ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:17:12,663 INFO L158 Benchmark]: IcfgBuilder took 322.64ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 89.1MB in the end (delta: 21.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 10:17:12,663 INFO L158 Benchmark]: TraceAbstraction took 9765.53ms. Allocated memory was 167.8MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 88.1MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2025-03-04 10:17:12,663 INFO L158 Benchmark]: Witness Printer took 63.96ms. Allocated memory is still 6.1GB. Free memory was 5.0GB in the beginning and 5.0GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:17:12,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.00ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 113.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.16ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 112.3MB in the end (delta: 989.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.69ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 322.64ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 89.1MB in the end (delta: 21.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9765.53ms. Allocated memory was 167.8MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 88.1MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 63.96ms. Allocated memory is still 6.1GB. Free memory was 5.0GB in the beginning and 5.0GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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: 81]: 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 9 procedures, 99 locations, 6 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: 9.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 0 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2025-03-04 10:17:12,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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