./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/chl-file-item-trans.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 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:23:03,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:23:03,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:23:03,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:23:03,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:23:03,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:23:03,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:23:03,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:23:03,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:23:03,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:23:03,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:23:03,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:23:03,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:23:03,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:23:03,764 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:23:03,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:23:03,765 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:23:03,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:23:03,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:23:03,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:23:03,766 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:23:03,767 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:23:03,767 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:23:03,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:23:03,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:23:03,768 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:23:03,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:23:03,768 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:23:03,768 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:23:03,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:23:03,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:23:03,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:23:03,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:23:03,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:23:03,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:23:03,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:23:03,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:23:03,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:23:03,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:23:03,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:23:03,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:23:03,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:23:03,771 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a [2024-11-12 16:23:03,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:23:03,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:23:03,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:23:03,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:23:03,991 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:23:03,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2024-11-12 16:23:05,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:23:05,314 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:23:05,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2024-11-12 16:23:05,321 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7469a7af5/c8371aa766a449828b6c4d7f3b94b956/FLAG25e45553f [2024-11-12 16:23:05,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7469a7af5/c8371aa766a449828b6c4d7f3b94b956 [2024-11-12 16:23:05,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:23:05,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:23:05,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:23:05,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:23:05,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:23:05,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:05,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3f3157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05, skipping insertion in model container [2024-11-12 16:23:05,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:05,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:23:05,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:23:05,938 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:23:05,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:23:05,982 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:23:05,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05 WrapperNode [2024-11-12 16:23:05,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:23:05,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:23:05,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:23:05,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:23:05,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:05,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,016 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 194 [2024-11-12 16:23:06,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:23:06,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:23:06,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:23:06,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:23:06,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,027 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,042 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]. [2024-11-12 16:23:06,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:23:06,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:23:06,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:23:06,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:23:06,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (1/1) ... [2024-11-12 16:23:06,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:23:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:23:06,082 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) [2024-11-12 16:23:06,087 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 [2024-11-12 16:23:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:23:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:23:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:23:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:23:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:23:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 16:23:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 16:23:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:23:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:23:06,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:23:06,119 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:23:06,198 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:23:06,200 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:23:06,472 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:23:06,472 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:23:06,809 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:23:06,809 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 16:23:06,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:23:06 BoogieIcfgContainer [2024-11-12 16:23:06,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:23:06,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:23:06,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:23:06,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:23:06,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:23:05" (1/3) ... [2024-11-12 16:23:06,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d83102f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:23:06, skipping insertion in model container [2024-11-12 16:23:06,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:05" (2/3) ... [2024-11-12 16:23:06,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d83102f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:23:06, skipping insertion in model container [2024-11-12 16:23:06,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:23:06" (3/3) ... [2024-11-12 16:23:06,836 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2024-11-12 16:23:06,851 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:23:06,852 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:23:06,852 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:23:06,911 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 16:23:06,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2024-11-12 16:23:06,967 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-12 16:23:06,968 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 16:23:06,970 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 8 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. [2024-11-12 16:23:06,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2024-11-12 16:23:06,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2024-11-12 16:23:06,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:23:06,991 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;@1e148cab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:23:06,993 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-12 16:23:07,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:23:07,004 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-12 16:23:07,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 16:23:07,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:23:07,006 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:23:07,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:23:07,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:23:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1907454541, now seen corresponding path program 1 times [2024-11-12 16:23:07,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:23:07,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067103805] [2024-11-12 16:23:07,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:23:07,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:23:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:23:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:23:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:23:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067103805] [2024-11-12 16:23:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067103805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:23:08,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:23:08,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:23:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658903619] [2024-11-12 16:23:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:23:08,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:23:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:23:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:23:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:23:08,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:23:08,383 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) [2024-11-12 16:23:08,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:23:08,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:23:08,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:23:08,621 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2024-11-12 16:23:08,621 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-12 16:23:08,622 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 223 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. [2024-11-12 16:23:08,624 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2024-11-12 16:23:08,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2024-11-12 16:23:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:23:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:23:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-12 16:23:08,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-12 16:23:08,634 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 70 transitions. [2024-11-12 16:23:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2024-11-12 16:23:08,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 16:23:08,639 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2024-11-12 16:23:08,641 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} [2024-11-12 16:23:08,643 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-12 16:23:08,644 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2024-11-12 16:23:08,644 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) [2024-11-12 16:23:08,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:23:08,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:23:08,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:23:08,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:23:08,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:23:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1773786969, now seen corresponding path program 2 times [2024-11-12 16:23:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:23:08,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19715121] [2024-11-12 16:23:08,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:23:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:23:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:23:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:23:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:23:09,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19715121] [2024-11-12 16:23:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19715121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:23:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:23:09,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:23:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261980116] [2024-11-12 16:23:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:23:09,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:23:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:23:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:23:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:23:09,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:23:09,468 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) [2024-11-12 16:23:09,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:23:09,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:23:09,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:23:09,716 INFO L124 PetriNetUnfolderBase]: 31/97 cut-off events. [2024-11-12 16:23:09,717 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-12 16:23:09,718 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 321 event pairs, 4 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2024-11-12 16:23:09,718 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 26 selfloop transitions, 7 changer transitions 8/42 dead transitions. [2024-11-12 16:23:09,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 220 flow [2024-11-12 16:23:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:23:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:23:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-11-12 16:23:09,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-11-12 16:23:09,720 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 6 states and 69 transitions. [2024-11-12 16:23:09,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 220 flow [2024-11-12 16:23:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 216 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-12 16:23:09,721 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 92 flow [2024-11-12 16:23:09,722 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=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2024-11-12 16:23:09,722 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2024-11-12 16:23:09,723 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 92 flow [2024-11-12 16:23:09,723 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) [2024-11-12 16:23:09,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:23:09,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:23:09,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:23:09,723 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:23:09,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:23:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash -894356649, now seen corresponding path program 3 times [2024-11-12 16:23:09,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:23:09,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244289935] [2024-11-12 16:23:09,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:23:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:23:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:23:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:23:10,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:23:10,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244289935] [2024-11-12 16:23:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244289935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:23:10,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:23:10,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:23:10,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230056540] [2024-11-12 16:23:10,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:23:10,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:23:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:23:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:23:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:23:10,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:23:10,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 92 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) [2024-11-12 16:23:10,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:23:10,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:23:10,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:23:10,518 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2024-11-12 16:23:10,518 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-12 16:23:10,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 83 events. 27/83 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 241 event pairs, 1 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 262. Up to 38 conditions per place. [2024-11-12 16:23:10,519 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 23 selfloop transitions, 6 changer transitions 9/39 dead transitions. [2024-11-12 16:23:10,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 228 flow [2024-11-12 16:23:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:23:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:23:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-12 16:23:10,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-11-12 16:23:10,521 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 92 flow. Second operand 6 states and 68 transitions. [2024-11-12 16:23:10,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 228 flow [2024-11-12 16:23:10,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 213 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-12 16:23:10,523 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 96 flow [2024-11-12 16:23:10,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=6, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2024-11-12 16:23:10,524 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2024-11-12 16:23:10,524 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 96 flow [2024-11-12 16:23:10,524 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) [2024-11-12 16:23:10,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:23:10,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:23:10,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:23:10,525 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:23:10,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:23:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash -918480315, now seen corresponding path program 4 times [2024-11-12 16:23:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:23:10,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199509328] [2024-11-12 16:23:10,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:23:10,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:23:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:23:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:23:11,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:23:11,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199509328] [2024-11-12 16:23:11,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199509328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:23:11,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:23:11,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:23:11,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107016020] [2024-11-12 16:23:11,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:23:11,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:23:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:23:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:23:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:23:11,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:23:11,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 96 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) [2024-11-12 16:23:11,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:23:11,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:23:11,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:23:11,234 INFO L124 PetriNetUnfolderBase]: 14/47 cut-off events. [2024-11-12 16:23:11,234 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-12 16:23:11,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 47 events. 14/47 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2024-11-12 16:23:11,235 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 16 selfloop transitions, 4 changer transitions 8/29 dead transitions. [2024-11-12 16:23:11,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 177 flow [2024-11-12 16:23:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:23:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:23:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2024-11-12 16:23:11,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-12 16:23:11,237 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 96 flow. Second operand 6 states and 57 transitions. [2024-11-12 16:23:11,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 177 flow [2024-11-12 16:23:11,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 156 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 16:23:11,238 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 71 flow [2024-11-12 16:23:11,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2024-11-12 16:23:11,239 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-11-12 16:23:11,239 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 71 flow [2024-11-12 16:23:11,239 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) [2024-11-12 16:23:11,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:23:11,239 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:23:11,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:23:11,240 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:23:11,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:23:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash 598179495, now seen corresponding path program 5 times [2024-11-12 16:23:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:23:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569842737] [2024-11-12 16:23:11,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:23:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:23:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:23:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:23:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:23:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569842737] [2024-11-12 16:23:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569842737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:23:11,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:23:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:23:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405953070] [2024-11-12 16:23:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:23:11,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:23:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:23:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:23:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:23:11,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:23:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 71 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) [2024-11-12 16:23:11,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:23:11,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:23:11,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:23:11,905 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2024-11-12 16:23:11,906 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-12 16:23:11,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 37 events. 8/37 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 116. Up to 17 conditions per place. [2024-11-12 16:23:11,906 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2024-11-12 16:23:11,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 154 flow [2024-11-12 16:23:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:23:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:23:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2024-11-12 16:23:11,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-12 16:23:11,908 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 71 flow. Second operand 6 states and 57 transitions. [2024-11-12 16:23:11,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 154 flow [2024-11-12 16:23:11,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 132 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-12 16:23:11,909 INFO L231 Difference]: Finished difference. Result has 32 places, 15 transitions, 55 flow [2024-11-12 16:23:11,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=53, 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=6, PETRI_FLOW=55, PETRI_PLACES=32, PETRI_TRANSITIONS=15} [2024-11-12 16:23:11,910 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2024-11-12 16:23:11,910 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 15 transitions, 55 flow [2024-11-12 16:23:11,910 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) [2024-11-12 16:23:11,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:23:11,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:23:11,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:23:11,910 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:23:11,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:23:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1453486149, now seen corresponding path program 6 times [2024-11-12 16:23:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:23:11,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479699099] [2024-11-12 16:23:11,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:23:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:23:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:23:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:23:12,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:23:12,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479699099] [2024-11-12 16:23:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479699099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:23:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:23:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:23:12,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254571857] [2024-11-12 16:23:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:23:12,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:23:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:23:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:23:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:23:12,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-12 16:23:12,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 15 transitions, 55 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) [2024-11-12 16:23:12,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:23:12,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-12 16:23:12,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:23:12,565 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-12 16:23:12,566 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-12 16:23:12,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 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 60. Up to 7 conditions per place. [2024-11-12 16:23:12,566 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2024-11-12 16:23:12,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 87 flow [2024-11-12 16:23:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:23:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:23:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2024-11-12 16:23:12,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-12 16:23:12,568 INFO L175 Difference]: Start difference. First operand has 32 places, 15 transitions, 55 flow. Second operand 6 states and 47 transitions. [2024-11-12 16:23:12,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 87 flow [2024-11-12 16:23:12,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 74 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-12 16:23:12,568 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2024-11-12 16:23:12,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=22, 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=27, PETRI_TRANSITIONS=0} [2024-11-12 16:23:12,569 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-12 16:23:12,569 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2024-11-12 16:23:12,569 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) [2024-11-12 16:23:12,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2024-11-12 16:23:12,573 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-12 16:23:12,573 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-12 16:23:12,573 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-12 16:23:12,573 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-12 16:23:12,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:23:12,574 INFO L421 BasicCegarLoop]: Path program histogram: [6] [2024-11-12 16:23:12,576 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 16:23:12,576 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 16:23:12,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:23:12 BasicIcfg [2024-11-12 16:23:12,581 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 16:23:12,582 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 16:23:12,582 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 16:23:12,582 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 16:23:12,582 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:23:06" (3/4) ... [2024-11-12 16:23:12,584 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 16:23:12,587 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-12 16:23:12,587 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-12 16:23:12,587 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-12 16:23:12,592 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-11-12 16:23:12,592 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-12 16:23:12,592 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-12 16:23:12,592 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-12 16:23:12,672 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 16:23:12,673 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 16:23:12,673 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 16:23:12,674 INFO L158 Benchmark]: Toolchain (without parser) took 6952.18ms. Allocated memory was 151.0MB in the beginning and 360.7MB in the end (delta: 209.7MB). Free memory was 79.0MB in the beginning and 272.0MB in the end (delta: -193.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,675 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 151.0MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 16:23:12,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.39ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 78.9MB in the beginning and 157.9MB in the end (delta: -79.0MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.26ms. Allocated memory is still 186.6MB. Free memory was 157.9MB in the beginning and 155.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,676 INFO L158 Benchmark]: Boogie Preprocessor took 35.69ms. Allocated memory is still 186.6MB. Free memory was 155.8MB in the beginning and 152.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,676 INFO L158 Benchmark]: RCFGBuilder took 756.71ms. Allocated memory is still 186.6MB. Free memory was 152.6MB in the beginning and 54.1MB in the end (delta: 98.6MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,676 INFO L158 Benchmark]: TraceAbstraction took 5752.20ms. Allocated memory was 186.6MB in the beginning and 360.7MB in the end (delta: 174.1MB). Free memory was 152.4MB in the beginning and 277.3MB in the end (delta: -124.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,677 INFO L158 Benchmark]: Witness Printer took 91.53ms. Allocated memory is still 360.7MB. Free memory was 277.3MB in the beginning and 272.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-12 16:23:12,678 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 151.0MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.39ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 78.9MB in the beginning and 157.9MB in the end (delta: -79.0MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.26ms. Allocated memory is still 186.6MB. Free memory was 157.9MB in the beginning and 155.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.69ms. Allocated memory is still 186.6MB. Free memory was 155.8MB in the beginning and 152.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 756.71ms. Allocated memory is still 186.6MB. Free memory was 152.6MB in the beginning and 54.1MB in the end (delta: 98.6MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5752.20ms. Allocated memory was 186.6MB in the beginning and 360.7MB in the end (delta: 174.1MB). Free memory was 152.4MB in the beginning and 277.3MB in the end (delta: -124.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 91.53ms. Allocated memory is still 360.7MB. Free memory was 277.3MB in the beginning and 272.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 5.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 351 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 1234 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 16:23:12,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE