./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i -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 6459c3a3aa967b53ca30e3b9918903c0b3ea7a6b804c927bd1e7a9e96906dc40 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:43:09,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:43:09,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:43:09,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:43:09,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:43:09,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:43:09,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:43:09,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:43:09,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:43:09,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:43:09,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:43:09,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:43:09,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:43:09,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:43:09,608 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:43:09,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:43:09,608 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:43:09,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:43:09,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:43:09,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:43:09,609 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:43:09,610 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:43:09,610 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:43:09,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:43:09,613 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:43:09,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:43:09,614 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:43:09,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:43:09,614 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:43:09,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:43:09,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:43:09,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:43:09,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:43:09,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:43:09,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:43:09,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:43:09,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6459c3a3aa967b53ca30e3b9918903c0b3ea7a6b804c927bd1e7a9e96906dc40 [2024-10-14 19:43:09,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:43:09,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:43:09,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:43:09,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:43:09,850 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:43:09,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i [2024-10-14 19:43:11,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:43:11,355 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:43:11,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i [2024-10-14 19:43:11,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9c0fced/6d8717d2547c41eb8cb3abe34271f7fb/FLAG6f155cb4f [2024-10-14 19:43:11,390 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9c0fced/6d8717d2547c41eb8cb3abe34271f7fb [2024-10-14 19:43:11,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:43:11,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:43:11,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:43:11,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:43:11,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:43:11,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd43d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11, skipping insertion in model container [2024-10-14 19:43:11,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:43:11,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:43:11,719 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:43:11,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:43:11,788 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:43:11,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11 WrapperNode [2024-10-14 19:43:11,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:43:11,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:43:11,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:43:11,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:43:11,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,826 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2024-10-14 19:43:11,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:43:11,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:43:11,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:43:11,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:43:11,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,848 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-14 19:43:11,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:43:11,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:43:11,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:43:11,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:43:11,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (1/1) ... [2024-10-14 19:43:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:43:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:43:11,930 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) [2024-10-14 19:43:11,959 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 [2024-10-14 19:43:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 19:43:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:43:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 19:43:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 19:43:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:43:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:43:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 19:43:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 19:43:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:43:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:43:12,001 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:43:12,110 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:43:12,112 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:43:12,249 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:43:12,249 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:43:12,363 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:43:12,363 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 19:43:12,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:43:12 BoogieIcfgContainer [2024-10-14 19:43:12,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:43:12,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:43:12,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:43:12,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:43:12,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:43:11" (1/3) ... [2024-10-14 19:43:12,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3574b61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:43:12, skipping insertion in model container [2024-10-14 19:43:12,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:11" (2/3) ... [2024-10-14 19:43:12,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3574b61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:43:12, skipping insertion in model container [2024-10-14 19:43:12,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:43:12" (3/3) ... [2024-10-14 19:43:12,373 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_38-traces-ex-4-switch_true.i [2024-10-14 19:43:12,389 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:43:12,390 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:43:12,390 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:43:12,431 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:43:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 74 flow [2024-10-14 19:43:12,493 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-14 19:43:12,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:43:12,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 2/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-10-14 19:43:12,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 74 flow [2024-10-14 19:43:12,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 33 transitions, 69 flow [2024-10-14 19:43:12,508 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:43:12,514 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;@34b69e0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:43:12,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-14 19:43:12,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:43:12,526 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-10-14 19:43:12,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:43:12,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:12,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:43:12,527 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:43:12,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash -151630798, now seen corresponding path program 1 times [2024-10-14 19:43:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49376838] [2024-10-14 19:43:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:12,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49376838] [2024-10-14 19:43:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49376838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:43:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001475313] [2024-10-14 19:43:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:12,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:43:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:43:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:43:12,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-14 19:43:12,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 19:43:12,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:12,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-14 19:43:12,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:13,012 INFO L124 PetriNetUnfolderBase]: 93/248 cut-off events. [2024-10-14 19:43:13,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:43:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 248 events. 93/248 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1038 event pairs, 46 based on Foata normal form. 14/252 useless extension candidates. Maximal degree in co-relation 452. Up to 111 conditions per place. [2024-10-14 19:43:13,017 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 32 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-10-14 19:43:13,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 189 flow [2024-10-14 19:43:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:43:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:43:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-10-14 19:43:13,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-10-14 19:43:13,030 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 69 flow. Second operand 5 states and 98 transitions. [2024-10-14 19:43:13,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 189 flow [2024-10-14 19:43:13,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:43:13,036 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 124 flow [2024-10-14 19:43:13,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-10-14 19:43:13,042 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2024-10-14 19:43:13,042 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 124 flow [2024-10-14 19:43:13,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 19:43:13,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:13,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:43:13,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:43:13,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:43:13,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1270689091, now seen corresponding path program 1 times [2024-10-14 19:43:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:13,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073958422] [2024-10-14 19:43:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:13,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:13,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073958422] [2024-10-14 19:43:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073958422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:13,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:43:13,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489096563] [2024-10-14 19:43:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:13,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:43:13,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:13,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:43:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:43:13,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-14 19:43:13,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-14 19:43:13,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:13,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-14 19:43:13,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:13,218 INFO L124 PetriNetUnfolderBase]: 82/232 cut-off events. [2024-10-14 19:43:13,218 INFO L125 PetriNetUnfolderBase]: For 102/108 co-relation queries the response was YES. [2024-10-14 19:43:13,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 232 events. 82/232 cut-off events. For 102/108 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 994 event pairs, 73 based on Foata normal form. 10/238 useless extension candidates. Maximal degree in co-relation 529. Up to 186 conditions per place. [2024-10-14 19:43:13,220 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 15 selfloop transitions, 1 changer transitions 11/35 dead transitions. [2024-10-14 19:43:13,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 170 flow [2024-10-14 19:43:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:43:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:43:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-10-14 19:43:13,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-10-14 19:43:13,222 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 124 flow. Second operand 3 states and 51 transitions. [2024-10-14 19:43:13,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 170 flow [2024-10-14 19:43:13,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:43:13,225 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 74 flow [2024-10-14 19:43:13,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2024-10-14 19:43:13,225 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-10-14 19:43:13,226 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 74 flow [2024-10-14 19:43:13,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-14 19:43:13,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:13,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:43:13,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:43:13,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:43:13,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:13,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2080548243, now seen corresponding path program 1 times [2024-10-14 19:43:13,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:13,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843168300] [2024-10-14 19:43:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:13,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843168300] [2024-10-14 19:43:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843168300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:13,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:13,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:43:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004654882] [2024-10-14 19:43:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:13,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:43:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:43:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:43:13,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-14 19:43:13,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-10-14 19:43:13,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:13,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-14 19:43:13,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:13,376 INFO L124 PetriNetUnfolderBase]: 15/67 cut-off events. [2024-10-14 19:43:13,377 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:43:13,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 67 events. 15/67 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 5 based on Foata normal form. 10/73 useless extension candidates. Maximal degree in co-relation 134. Up to 30 conditions per place. [2024-10-14 19:43:13,378 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 9 selfloop transitions, 3 changer transitions 11/29 dead transitions. [2024-10-14 19:43:13,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 126 flow [2024-10-14 19:43:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:43:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:43:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-14 19:43:13,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-14 19:43:13,380 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 74 flow. Second operand 3 states and 57 transitions. [2024-10-14 19:43:13,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 126 flow [2024-10-14 19:43:13,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 109 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-14 19:43:13,382 INFO L231 Difference]: Finished difference. Result has 32 places, 17 transitions, 47 flow [2024-10-14 19:43:13,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2024-10-14 19:43:13,384 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-10-14 19:43:13,384 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 47 flow [2024-10-14 19:43:13,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-10-14 19:43:13,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:13,385 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:43:13,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:43:13,385 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:43:13,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash 77743253, now seen corresponding path program 1 times [2024-10-14 19:43:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:13,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222183815] [2024-10-14 19:43:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:13,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222183815] [2024-10-14 19:43:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222183815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:43:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691463101] [2024-10-14 19:43:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:13,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:43:13,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:43:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:43:13,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-14 19:43:13,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-10-14 19:43:13,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:13,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-14 19:43:13,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:13,584 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-10-14 19:43:13,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:43:13,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 28 events. 5/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 3/30 useless extension candidates. Maximal degree in co-relation 57. Up to 16 conditions per place. [2024-10-14 19:43:13,585 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2024-10-14 19:43:13,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 65 flow [2024-10-14 19:43:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:43:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:43:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2024-10-14 19:43:13,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-10-14 19:43:13,587 INFO L175 Difference]: Start difference. First operand has 32 places, 17 transitions, 47 flow. Second operand 4 states and 57 transitions. [2024-10-14 19:43:13,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 65 flow [2024-10-14 19:43:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:43:13,587 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2024-10-14 19:43:13,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2024-10-14 19:43:13,588 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -14 predicate places. [2024-10-14 19:43:13,588 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2024-10-14 19:43:13,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-10-14 19:43:13,590 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2024-10-14 19:43:13,591 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-10-14 19:43:13,591 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-14 19:43:13,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:43:13,592 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 19:43:13,594 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 19:43:13,594 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 19:43:13,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:43:13 BasicIcfg [2024-10-14 19:43:13,598 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 19:43:13,599 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 19:43:13,599 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 19:43:13,599 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 19:43:13,600 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:43:12" (3/4) ... [2024-10-14 19:43:13,601 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 19:43:13,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-14 19:43:13,606 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2024-10-14 19:43:13,607 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-14 19:43:13,607 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 19:43:13,607 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 19:43:13,676 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 19:43:13,677 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 19:43:13,679 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 19:43:13,679 INFO L158 Benchmark]: Toolchain (without parser) took 2286.55ms. Allocated memory is still 213.9MB. Free memory was 144.9MB in the beginning and 159.0MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:43:13,679 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:43:13,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.68ms. Allocated memory is still 213.9MB. Free memory was 144.6MB in the beginning and 124.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 19:43:13,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.89ms. Allocated memory is still 213.9MB. Free memory was 124.0MB in the beginning and 122.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 19:43:13,680 INFO L158 Benchmark]: Boogie Preprocessor took 31.69ms. Allocated memory is still 213.9MB. Free memory was 122.1MB in the beginning and 120.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 19:43:13,680 INFO L158 Benchmark]: RCFGBuilder took 503.63ms. Allocated memory is still 213.9MB. Free memory was 120.1MB in the beginning and 160.4MB in the end (delta: -40.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2024-10-14 19:43:13,680 INFO L158 Benchmark]: TraceAbstraction took 1232.90ms. Allocated memory is still 213.9MB. Free memory was 160.4MB in the beginning and 163.2MB in the end (delta: -2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:43:13,681 INFO L158 Benchmark]: Witness Printer took 79.79ms. Allocated memory is still 213.9MB. Free memory was 163.2MB in the beginning and 159.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 19:43:13,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.68ms. Allocated memory is still 213.9MB. Free memory was 144.6MB in the beginning and 124.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.89ms. Allocated memory is still 213.9MB. Free memory was 124.0MB in the beginning and 122.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.69ms. Allocated memory is still 213.9MB. Free memory was 122.1MB in the beginning and 120.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.63ms. Allocated memory is still 213.9MB. Free memory was 120.1MB in the beginning and 160.4MB in the end (delta: -40.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1232.90ms. Allocated memory is still 213.9MB. Free memory was 160.4MB in the beginning and 163.2MB in the end (delta: -2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 79.79ms. Allocated memory is still 213.9MB. Free memory was 163.2MB in the beginning and 159.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 695]: 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 3 procedures, 49 locations, 3 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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 1 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=1, InterpolantAutomatonStates: 15, 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, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2024-10-14 19:43:13,709 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