./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/gr2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --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 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:26,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:26,718 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 22:17:26,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:26,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:26,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:26,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:26,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:26,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:26,760 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:26,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:26,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:26,762 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:26,762 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:17:26,763 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:17:26,763 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:17:26,763 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:17:26,764 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:17:26,764 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:17:26,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:26,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:17:26,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:26,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:26,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:26,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:26,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:17:26,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:17:26,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:17:26,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:26,772 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:26,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:26,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:26,786 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:17:26,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:26,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:26,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:26,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:26,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:26,788 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:17:26,791 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_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2024-10-31 22:17:27,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:27,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:27,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:27,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:27,157 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:27,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/loop-lit/gr2006.i Unable to find full path for "g++" [2024-10-31 22:17:29,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:29,471 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:29,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/sv-benchmarks/c/loop-lit/gr2006.i [2024-10-31 22:17:29,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/data/afaeffaaf/5cb44f7c7f19445e87285d3255044549/FLAG47157452e [2024-10-31 22:17:29,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/data/afaeffaaf/5cb44f7c7f19445e87285d3255044549 [2024-10-31 22:17:29,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:29,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:29,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:29,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:29,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:29,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f80937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29, skipping insertion in model container [2024-10-31 22:17:29,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:29,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:29,826 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:29,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:29,867 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:29,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29 WrapperNode [2024-10-31 22:17:29,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:29,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:29,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:29,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:29,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,905 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 39 [2024-10-31 22:17:29,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:29,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:29,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:29,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:29,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,938 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:17:29,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:29,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:29,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:29,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:29,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (1/1) ... [2024-10-31 22:17:29,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:29,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:30,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:30,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:30,116 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:30,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:30,268 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-31 22:17:30,269 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:30,281 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:30,288 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:17:30,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:30 BoogieIcfgContainer [2024-10-31 22:17:30,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:30,290 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:17:30,290 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:17:30,294 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:17:30,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:17:30,296 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:17:29" (1/3) ... [2024-10-31 22:17:30,297 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c9eeabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:17:30, skipping insertion in model container [2024-10-31 22:17:30,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:17:30,297 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:29" (2/3) ... [2024-10-31 22:17:30,298 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c9eeabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:17:30, skipping insertion in model container [2024-10-31 22:17:30,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:17:30,298 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:30" (3/3) ... [2024-10-31 22:17:30,299 INFO L332 chiAutomizerObserver]: Analyzing ICFG gr2006.i [2024-10-31 22:17:30,364 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:17:30,365 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:17:30,365 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:17:30,365 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:17:30,366 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:17:30,366 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:17:30,367 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:17:30,367 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:17:30,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2024-10-31 22:17:30,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:30,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:30,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:30,400 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:17:30,401 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:17:30,401 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:17:30,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2024-10-31 22:17:30,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:30,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:30,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:30,405 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:17:30,405 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:17:30,414 INFO L745 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L28-2true [2024-10-31 22:17:30,414 INFO L747 eck$LassoCheckResult]: Loop: 5#L28-2true assume !false; 4#L29true assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 13#L29-2true assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 5#L28-2true [2024-10-31 22:17:30,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:17:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059584461] [2024-10-31 22:17:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:30,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:30,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:30,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash 40880, now seen corresponding path program 1 times [2024-10-31 22:17:30,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:30,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399190200] [2024-10-31 22:17:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:30,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:30,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:30,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash 28699822, now seen corresponding path program 1 times [2024-10-31 22:17:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:30,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488822753] [2024-10-31 22:17:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488822753] [2024-10-31 22:17:30,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488822753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:30,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:30,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:30,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791760642] [2024-10-31 22:17:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:30,887 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:30,888 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:30,888 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:30,888 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:30,888 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:17:30,889 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:30,889 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:30,889 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:30,890 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2024-10-31 22:17:30,890 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:30,891 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:30,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:30,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:30,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:30,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:31,089 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:31,090 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:17:31,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:31,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:31,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:17:31,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:31,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:31,118 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:17:31,118 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:17:31,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-31 22:17:31,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:31,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:31,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:17:31,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:31,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:31,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:17:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:31,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:17:31,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:17:31,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:31,264 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:17:31,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:31,269 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:31,269 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:31,270 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:31,270 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:31,270 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:17:31,270 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,270 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:31,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:31,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2024-10-31 22:17:31,271 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:31,271 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:31,273 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:31,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:31,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:31,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:31,379 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:31,383 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:17:31,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:31,388 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:31,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:17:31,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:31,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:31,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:31,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:31,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:31,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:31,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:31,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:31,413 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:31,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 22:17:31,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:31,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:31,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:17:31,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:31,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:31,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:31,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:31,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:31,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:31,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:31,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:31,461 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:17:31,465 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-31 22:17:31,466 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:17:31,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:31,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:31,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:31,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:17:31,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:17:31,489 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:17:31,489 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:17:31,490 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2024-10-31 22:17:31,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:17:31,513 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:17:31,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:31,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:31,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:31,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:31,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:31,701 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:17:31,703 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:17:31,768 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) Result 29 states and 42 transitions. Complement of second has 8 states. [2024-10-31 22:17:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-31 22:17:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:17:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2024-10-31 22:17:31,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 3 letters. [2024-10-31 22:17:31,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:31,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2024-10-31 22:17:31,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:31,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 6 letters. [2024-10-31 22:17:31,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:31,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 42 transitions. [2024-10-31 22:17:31,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:31,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2024-10-31 22:17:31,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-10-31 22:17:31,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-10-31 22:17:31,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2024-10-31 22:17:31,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:17:31,800 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-31 22:17:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2024-10-31 22:17:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-31 22:17:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2024-10-31 22:17:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-10-31 22:17:31,826 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-31 22:17:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:31,829 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:17:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:31,843 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-10-31 22:17:31,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-10-31 22:17:31,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:31,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2024-10-31 22:17:31,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-10-31 22:17:31,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-31 22:17:31,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-10-31 22:17:31,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:31,845 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-10-31 22:17:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-10-31 22:17:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-10-31 22:17:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2024-10-31 22:17:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-10-31 22:17:31,847 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-31 22:17:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:31,849 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-31 22:17:31,849 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:17:31,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-10-31 22:17:31,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:31,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:31,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:31,851 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-31 22:17:31,851 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:17:31,851 INFO L745 eck$LassoCheckResult]: Stem: 105#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 111#L28-2 assume !false; 107#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 108#L29-2 [2024-10-31 22:17:31,851 INFO L747 eck$LassoCheckResult]: Loop: 108#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 109#L28-2 assume !false; 110#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 108#L29-2 [2024-10-31 22:17:31,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-10-31 22:17:31,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810159414] [2024-10-31 22:17:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:31,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:31,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:31,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 2 times [2024-10-31 22:17:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322716799] [2024-10-31 22:17:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:31,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:31,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:31,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:31,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665941, now seen corresponding path program 1 times [2024-10-31 22:17:31,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062830906] [2024-10-31 22:17:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062830906] [2024-10-31 22:17:32,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062830906] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306526000] [2024-10-31 22:17:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:32,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:32,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:17:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:17:32,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306526000] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:32,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:32,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-31 22:17:32,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667897288] [2024-10-31 22:17:32,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:32,212 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:32,212 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:32,212 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:32,212 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:32,212 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:17:32,212 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,213 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:32,213 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:32,213 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2024-10-31 22:17:32,213 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:32,213 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:32,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,230 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,234 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,277 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:32,277 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:17:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:17:32,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:32,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:32,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-31 22:17:32,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:17:32,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:17:32,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:32,377 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:17:32,378 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=49} Honda state: {ULTIMATE.start_main_~x~0#1=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [14, 1, 8] Nus: [0, 1] [2024-10-31 22:17:32,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:32,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:17:32,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:32,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:32,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 22:17:32,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,442 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:17:32,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:17:32,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:32,496 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:17:32,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:17:32,501 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:32,501 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:32,501 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:32,501 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:32,502 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:17:32,502 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,502 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:32,502 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:32,502 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2024-10-31 22:17:32,502 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:32,502 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:32,503 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,528 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:32,589 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:32,589 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:17:32,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:17:32,596 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:32,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:32,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:32,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:32,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:32,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:32,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:32,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:32,615 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:32,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-31 22:17:32,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:17:32,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:32,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:32,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:32,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:32,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:32,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:32,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:32,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:32,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:17:32,664 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:17:32,664 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:17:32,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:32,667 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:32,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:17:32,669 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:17:32,670 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:17:32,670 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:17:32,670 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2024-10-31 22:17:32,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 22:17:32,690 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:17:32,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:32,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:32,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:32,775 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:17:32,776 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-31 22:17:32,809 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Result 13 states and 16 transitions. Complement of second has 5 states. [2024-10-31 22:17:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-10-31 22:17:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-31 22:17:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-10-31 22:17:32,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2024-10-31 22:17:32,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:32,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-31 22:17:32,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:32,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2024-10-31 22:17:32,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:32,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2024-10-31 22:17:32,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:32,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2024-10-31 22:17:32,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-10-31 22:17:32,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-10-31 22:17:32,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2024-10-31 22:17:32,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:17:32,818 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-31 22:17:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2024-10-31 22:17:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-31 22:17:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2024-10-31 22:17:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-31 22:17:32,823 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-31 22:17:32,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:17:32,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:32,825 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-10-31 22:17:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:32,864 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-10-31 22:17:32,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2024-10-31 22:17:32,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:17:32,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2024-10-31 22:17:32,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2024-10-31 22:17:32,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2024-10-31 22:17:32,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2024-10-31 22:17:32,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:32,866 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-31 22:17:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2024-10-31 22:17:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-10-31 22:17:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-10-31 22:17:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-31 22:17:32,868 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-31 22:17:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:32,869 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-31 22:17:32,869 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:17:32,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2024-10-31 22:17:32,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:17:32,870 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:32,870 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:32,871 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2024-10-31 22:17:32,871 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:17:32,871 INFO L745 eck$LassoCheckResult]: Stem: 241#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 243#L28-2 assume !false; 239#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 240#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 244#L28-2 assume !false; 254#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 253#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 252#L28-2 assume !false; 251#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 250#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 249#L28-2 assume !false; 248#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 246#L29-2 [2024-10-31 22:17:32,871 INFO L747 eck$LassoCheckResult]: Loop: 246#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 247#L28-2 assume !false; 245#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 246#L29-2 [2024-10-31 22:17:32,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash -227870477, now seen corresponding path program 1 times [2024-10-31 22:17:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500933577] [2024-10-31 22:17:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:32,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:32,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 22:17:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:32,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:32,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 3 times [2024-10-31 22:17:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875481945] [2024-10-31 22:17:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:32,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:32,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:32,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:32,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1853936168, now seen corresponding path program 2 times [2024-10-31 22:17:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:32,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562663163] [2024-10-31 22:17:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:32,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:32,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:17:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:33,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562663163] [2024-10-31 22:17:33,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562663163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:33,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385973313] [2024-10-31 22:17:33,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:17:33,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:33,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,098 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-31 22:17:33,162 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:17:33,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:17:33,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:17:33,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:17:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385973313] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:17:33,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:17:33,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-31 22:17:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214440710] [2024-10-31 22:17:33,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:17:33,367 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:33,367 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:33,368 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:33,368 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:33,368 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:17:33,368 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,368 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:33,368 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:33,368 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2024-10-31 22:17:33,368 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:33,368 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:33,369 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,372 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,380 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,387 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,428 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:33,428 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:17:33,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,430 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:17:33,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:33,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:33,453 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:17:33,453 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:17:33,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-31 22:17:33,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 22:17:33,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:33,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:33,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-31 22:17:33,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,520 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 22:17:33,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:17:33,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:33,566 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:17:33,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-31 22:17:33,570 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:33,570 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:33,570 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:33,571 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:33,571 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:17:33,571 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,571 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:33,571 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:33,571 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2024-10-31 22:17:33,571 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:33,571 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:33,576 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,581 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,588 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:33,635 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:33,635 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:17:33,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,638 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 22:17:33,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:33,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:33,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:33,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:33,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:33,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:33,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:33,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:33,658 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:33,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-31 22:17:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,681 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 22:17:33,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:33,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:33,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:33,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:33,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:33,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:33,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:33,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:33,702 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:17:33,706 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:17:33,706 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:17:33,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:33,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:33,709 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:33,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 22:17:33,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:17:33,712 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:17:33,712 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:17:33,712 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2024-10-31 22:17:33,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:33,732 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:17:33,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:33,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:33,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,848 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:17:33,848 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-31 22:17:33,871 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Result 18 states and 19 transitions. Complement of second has 5 states. [2024-10-31 22:17:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-10-31 22:17:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-31 22:17:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-10-31 22:17:33,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-31 22:17:33,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:33,874 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:17:33,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:33,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:33,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:33,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:33,988 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:17:33,988 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-31 22:17:34,012 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Result 18 states and 19 transitions. Complement of second has 5 states. [2024-10-31 22:17:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-10-31 22:17:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-31 22:17:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-10-31 22:17:34,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-31 22:17:34,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:34,014 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:17:34,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:34,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:34,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:34,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:34,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:34,117 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:17:34,117 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-31 22:17:34,147 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Result 25 states and 27 transitions. Complement of second has 4 states. [2024-10-31 22:17:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-10-31 22:17:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-31 22:17:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2024-10-31 22:17:34,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-31 22:17:34,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:34,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2024-10-31 22:17:34,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:34,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2024-10-31 22:17:34,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:34,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2024-10-31 22:17:34,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 22:17:34,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2024-10-31 22:17:34,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-10-31 22:17:34,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-31 22:17:34,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2024-10-31 22:17:34,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:17:34,156 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-10-31 22:17:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2024-10-31 22:17:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-10-31 22:17:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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) [2024-10-31 22:17:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-10-31 22:17:34,160 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-10-31 22:17:34,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:17:34,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:17:34,162 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 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) [2024-10-31 22:17:34,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:34,235 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2024-10-31 22:17:34,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2024-10-31 22:17:34,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 22:17:34,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2024-10-31 22:17:34,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2024-10-31 22:17:34,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2024-10-31 22:17:34,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2024-10-31 22:17:34,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:17:34,238 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-10-31 22:17:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2024-10-31 22:17:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-10-31 22:17:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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) [2024-10-31 22:17:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-10-31 22:17:34,250 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-10-31 22:17:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:17:34,251 INFO L425 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-10-31 22:17:34,254 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:17:34,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2024-10-31 22:17:34,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 22:17:34,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:17:34,258 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:17:34,259 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2024-10-31 22:17:34,261 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:17:34,262 INFO L745 eck$LassoCheckResult]: Stem: 660#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 661#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 662#L28-2 assume !false; 656#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 657#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 664#L28-2 assume !false; 690#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 689#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 688#L28-2 assume !false; 687#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 686#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 685#L28-2 assume !false; 684#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 683#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 682#L28-2 assume !false; 681#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 680#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 679#L28-2 assume !false; 678#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 677#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 676#L28-2 assume !false; 675#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 674#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 673#L28-2 assume !false; 672#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 671#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 670#L28-2 assume !false; 669#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 668#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 665#L28-2 [2024-10-31 22:17:34,262 INFO L747 eck$LassoCheckResult]: Loop: 665#L28-2 assume !false; 667#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 666#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 665#L28-2 [2024-10-31 22:17:34,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash 992319728, now seen corresponding path program 2 times [2024-10-31 22:17:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:34,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650654528] [2024-10-31 22:17:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:34,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:34,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:34,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 40818, now seen corresponding path program 1 times [2024-10-31 22:17:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437305839] [2024-10-31 22:17:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:34,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:34,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:34,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash -62870493, now seen corresponding path program 3 times [2024-10-31 22:17:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:34,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076130150] [2024-10-31 22:17:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:34,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:34,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:34,443 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:34,443 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:34,443 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:34,443 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:34,443 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:17:34,443 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,443 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:34,443 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:34,443 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2024-10-31 22:17:34,443 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:34,444 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:34,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,456 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,515 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:34,515 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:17:34,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,517 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-31 22:17:34,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:34,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:34,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-31 22:17:34,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,561 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 22:17:34,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:17:34,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:34,614 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:17:34,614 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 1, 6] Nus: [0, 1] [2024-10-31 22:17:34,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:34,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,635 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-31 22:17:34,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:34,639 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:34,662 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:17:34,662 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1#1=0} Honda state: {ULTIMATE.start_main_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:17:34,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-31 22:17:34,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,687 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-31 22:17:34,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:17:34,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:34,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-10-31 22:17:34,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,729 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-31 22:17:34,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:17:34,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:17:34,800 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:17:34,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-31 22:17:34,804 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:17:34,804 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:17:34,804 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:17:34,804 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:17:34,804 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:17:34,804 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,805 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:17:34,805 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:17:34,805 INFO L132 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2024-10-31 22:17:34,805 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:17:34,805 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:17:34,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,815 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,818 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:17:34,867 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:17:34,870 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:17:34,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,873 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-31 22:17:34,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:34,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:34,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:34,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:34,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:34,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:34,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:34,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:34,896 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:34,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-10-31 22:17:34,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,914 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-31 22:17:34,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:34,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:34,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:34,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:34,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:34,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:34,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:34,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:34,936 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:17:34,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:34,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,958 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-31 22:17:34,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:17:34,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:17:34,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:17:34,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:17:34,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:17:34,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:17:34,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:17:34,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:17:34,980 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:17:34,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:17:34,985 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:17:34,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:17:34,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:34,987 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:34,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-31 22:17:34,990 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:17:34,990 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:17:34,990 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:17:34,990 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 99 Supporting invariants [] [2024-10-31 22:17:35,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:35,009 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:17:35,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:35,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:17:35,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:35,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:35,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-10-31 22:17:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:35,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:17:35,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:35,159 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:17:35,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-31 22:17:35,185 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Result 61 states and 65 transitions. Complement of second has 6 states. [2024-10-31 22:17:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-31 22:17:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-31 22:17:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-10-31 22:17:35,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2024-10-31 22:17:35,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:35,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2024-10-31 22:17:35,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:35,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2024-10-31 22:17:35,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:17:35,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2024-10-31 22:17:35,189 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:17:35,189 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2024-10-31 22:17:35,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-31 22:17:35,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-31 22:17:35,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-31 22:17:35,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:17:35,190 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:17:35,190 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:17:35,190 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:17:35,190 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:17:35,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-31 22:17:35,191 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:17:35,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-31 22:17:35,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:17:35 BoogieIcfgContainer [2024-10-31 22:17:35,198 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:17:35,199 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:17:35,199 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:17:35,199 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:17:35,200 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:30" (3/4) ... [2024-10-31 22:17:35,202 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:17:35,203 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:17:35,204 INFO L158 Benchmark]: Toolchain (without parser) took 5691.39ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 95.7MB in the beginning and 133.1MB in the end (delta: -37.5MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2024-10-31 22:17:35,205 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 136.3MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:17:35,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.53ms. Allocated memory is still 136.3MB. Free memory was 95.7MB in the beginning and 83.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-31 22:17:35,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.06ms. Allocated memory is still 136.3MB. Free memory was 83.5MB in the beginning and 82.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:17:35,206 INFO L158 Benchmark]: Boogie Preprocessor took 41.78ms. Allocated memory is still 136.3MB. Free memory was 82.2MB in the beginning and 80.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:17:35,207 INFO L158 Benchmark]: RCFGBuilder took 334.50ms. Allocated memory is still 136.3MB. Free memory was 80.5MB in the beginning and 71.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-31 22:17:35,207 INFO L158 Benchmark]: BuchiAutomizer took 4908.59ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 70.8MB in the beginning and 134.2MB in the end (delta: -63.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:17:35,208 INFO L158 Benchmark]: Witness Printer took 4.65ms. Allocated memory is still 176.2MB. Free memory was 134.2MB in the beginning and 133.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:17:35,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 136.3MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.53ms. Allocated memory is still 136.3MB. Free memory was 95.7MB in the beginning and 83.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.06ms. Allocated memory is still 136.3MB. Free memory was 83.5MB in the beginning and 82.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.78ms. Allocated memory is still 136.3MB. Free memory was 82.2MB in the beginning and 80.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.50ms. Allocated memory is still 136.3MB. Free memory was 80.5MB in the beginning and 71.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4908.59ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 70.8MB in the beginning and 134.2MB in the end (delta: -63.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.65ms. Allocated memory is still 176.2MB. Free memory was 134.2MB in the beginning and 133.1MB in the end (delta: 1.1MB). 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function (((long long) 2 * y) + 1) and consists of 3 locations. One deterministic module has affine ranking function (((long long) -2 * x) + 99) and consists of 4 locations. One nondeterministic module has affine ranking function (((long long) 2 * y) + 1) and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 43 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-31 22:17:35,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:35,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-31 22:17:35,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3e6c43d-bf4f-4a64-bb76-23097cfade81/bin/uautomizer-verify-4GaUIPS5ZU/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 Result: TRUE