./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:40:07,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:40:07,650 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:40:07,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:40:07,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:40:07,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:40:07,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:40:07,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:40:07,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:40:07,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:40:07,694 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:40:07,695 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:40:07,696 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:40:07,696 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:40:07,697 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:40:07,698 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:40:07,699 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:40:07,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:40:07,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:40:07,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:40:07,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:40:07,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:40:07,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:40:07,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:40:07,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:40:07,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:40:07,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:40:07,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:40:07,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:40:07,708 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:40:07,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:40:07,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:40:07,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:40:07,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:40:07,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:40:07,712 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:40:07,713 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e [2023-11-06 22:40:08,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:40:08,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:40:08,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:40:08,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:40:08,117 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:40:08,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2023-11-06 22:40:12,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:40:12,381 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:40:12,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/sv-benchmarks/c/ldv-regression/stateful_check.c [2023-11-06 22:40:12,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/data/7f8b6e737/99b4eca92450460b825a7fce56b81b2a/FLAG79a003e2c [2023-11-06 22:40:12,421 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/data/7f8b6e737/99b4eca92450460b825a7fce56b81b2a [2023-11-06 22:40:12,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:40:12,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:40:12,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:12,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:40:12,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:40:12,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:12,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e4c70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12, skipping insertion in model container [2023-11-06 22:40:12,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:12,494 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:40:12,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:12,893 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:40:12,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:12,964 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:40:12,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12 WrapperNode [2023-11-06 22:40:12,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:12,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:12,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:40:12,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:40:12,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:12,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,025 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 123 [2023-11-06 22:40:13,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:13,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:40:13,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:40:13,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:40:13,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:40:13,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:40:13,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:40:13,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:40:13,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (1/1) ... [2023-11-06 22:40:13,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:40:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:13,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:40:13,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:40:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:40:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:40:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:40:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:40:13,321 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:40:13,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:40:13,677 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:40:13,685 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:40:13,686 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:40:13,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:13 BoogieIcfgContainer [2023-11-06 22:40:13,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:40:13,690 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:40:13,691 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:40:13,696 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:40:13,697 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:40:13,697 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:40:12" (1/3) ... [2023-11-06 22:40:13,698 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@652d9d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:40:13, skipping insertion in model container [2023-11-06 22:40:13,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:40:13,699 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12" (2/3) ... [2023-11-06 22:40:13,700 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@652d9d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:40:13, skipping insertion in model container [2023-11-06 22:40:13,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:40:13,700 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:13" (3/3) ... [2023-11-06 22:40:13,702 INFO L332 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2023-11-06 22:40:13,769 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:40:13,769 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:40:13,769 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:40:13,769 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:40:13,770 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:40:13,770 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:40:13,770 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:40:13,770 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:40:13,775 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 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) [2023-11-06 22:40:13,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-06 22:40:13,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:40:13,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:40:13,822 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:40:13,823 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-06 22:40:13,823 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:40:13,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 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) [2023-11-06 22:40:13,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-06 22:40:13,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:40:13,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:40:13,830 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:40:13,831 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-06 22:40:13,841 INFO L748 eck$LassoCheckResult]: Stem: 26#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 32#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 4#my_init_returnLabel#1true main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 8#L78-3true [2023-11-06 22:40:13,841 INFO L750 eck$LassoCheckResult]: Loop: 8#L78-3true havoc main_#t~nondet6#1; 17#L78-1true assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 18#L82true assume main_#t~switch8#1; 19#L83true assume !(0 == main_~ldv_s_misc_fops_file_operations~0#1); 13#L80true havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 8#L78-3true [2023-11-06 22:40:13,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-06 22:40:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275097477] [2023-11-06 22:40:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:40:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:40:14,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 37375295, now seen corresponding path program 1 times [2023-11-06 22:40:14,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:14,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276080860] [2023-11-06 22:40:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:14,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:40:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:40:14,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:14,109 INFO L85 PathProgramCache]: Analyzing trace with hash 90815647, now seen corresponding path program 1 times [2023-11-06 22:40:14,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:14,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548419063] [2023-11-06 22:40:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:14,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:14,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548419063] [2023-11-06 22:40:14,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548419063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:14,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:14,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739772429] [2023-11-06 22:40:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:14,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:14,449 INFO L87 Difference]: Start difference. First operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-06 22:40:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:14,511 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2023-11-06 22:40:14,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 79 transitions. [2023-11-06 22:40:14,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-06 22:40:14,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 46 states and 62 transitions. [2023-11-06 22:40:14,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-06 22:40:14,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-06 22:40:14,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2023-11-06 22:40:14,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:14,527 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-06 22:40:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2023-11-06 22:40:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-06 22:40:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 45 states have internal predecessors, (62), 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) [2023-11-06 22:40:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2023-11-06 22:40:14,569 INFO L240 hiAutomatonCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-06 22:40:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:14,579 INFO L428 stractBuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-06 22:40:14,579 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:40:14,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 62 transitions. [2023-11-06 22:40:14,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2023-11-06 22:40:14,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:40:14,587 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:40:14,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:40:14,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:40:14,590 INFO L748 eck$LassoCheckResult]: Stem: 168#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 145#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 132#my_init_returnLabel#1 main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 133#L78-3 [2023-11-06 22:40:14,591 INFO L750 eck$LassoCheckResult]: Loop: 133#L78-3 havoc main_#t~nondet6#1; 172#L78-1 assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 171#L82 assume !main_#t~switch8#1;main_#t~switch8#1 := main_#t~switch8#1 || 1 == main_#t~nondet7#1; 158#L90 assume main_#t~switch8#1; 159#L91 assume !(1 == main_~ldv_s_misc_fops_file_operations~0#1); 147#L80 havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 133#L78-3 [2023-11-06 22:40:14,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2023-11-06 22:40:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417476689] [2023-11-06 22:40:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:40:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:40:14,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1159083728, now seen corresponding path program 1 times [2023-11-06 22:40:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278198274] [2023-11-06 22:40:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:14,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:40:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:40:14,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1479232656, now seen corresponding path program 1 times [2023-11-06 22:40:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309396354] [2023-11-06 22:40:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:40:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:40:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:14,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:40:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:40:15,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:40:15 BoogieIcfgContainer [2023-11-06 22:40:15,050 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:40:15,052 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:40:15,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:40:15,052 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:40:15,053 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:13" (3/4) ... [2023-11-06 22:40:15,055 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:40:15,117 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:40:15,119 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:40:15,126 INFO L158 Benchmark]: Toolchain (without parser) took 2682.38ms. Allocated memory is still 178.3MB. Free memory was 143.2MB in the beginning and 78.2MB in the end (delta: 65.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,127 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 125.8MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:40:15,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.50ms. Allocated memory is still 178.3MB. Free memory was 142.3MB in the beginning and 143.1MB in the end (delta: -730.5kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.99ms. Allocated memory is still 178.3MB. Free memory was 143.1MB in the beginning and 141.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,131 INFO L158 Benchmark]: Boogie Preprocessor took 55.78ms. Allocated memory is still 178.3MB. Free memory was 141.1MB in the beginning and 139.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,134 INFO L158 Benchmark]: RCFGBuilder took 603.98ms. Allocated memory is still 178.3MB. Free memory was 139.9MB in the beginning and 127.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,136 INFO L158 Benchmark]: BuchiAutomizer took 1360.68ms. Allocated memory is still 178.3MB. Free memory was 127.3MB in the beginning and 80.0MB in the end (delta: 47.3MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,141 INFO L158 Benchmark]: Witness Printer took 67.82ms. Allocated memory is still 178.3MB. Free memory was 80.0MB in the beginning and 78.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:40:15,145 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 125.8MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.50ms. Allocated memory is still 178.3MB. Free memory was 142.3MB in the beginning and 143.1MB in the end (delta: -730.5kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.99ms. Allocated memory is still 178.3MB. Free memory was 143.1MB in the beginning and 141.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.78ms. Allocated memory is still 178.3MB. Free memory was 141.1MB in the beginning and 139.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 603.98ms. Allocated memory is still 178.3MB. Free memory was 139.9MB in the beginning and 127.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 1360.68ms. Allocated memory is still 178.3MB. Free memory was 127.3MB in the beginning and 80.0MB in the end (delta: 47.3MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 67.82ms. Allocated memory is still 178.3MB. Free memory was 80.0MB in the beginning and 78.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 46 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 51 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 78]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L91] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 78]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L91] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:40:15,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_759ffbf0-91d7-4ae9-bb93-3c6fe794accb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)