./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/a.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/a.01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7dacefd51bf525e1f18311af2c5b989a40c07b1caf3a58b24e0820913f865011 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:03,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:03,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 21:14:03,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:03,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:03,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:03,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:03,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:03,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:03,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:03,696 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:03,697 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 21:14:03,697 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 21:14:03,699 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 21:14:03,699 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 21:14:03,700 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 21:14:03,700 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 21:14:03,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:03,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 21:14:03,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:03,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:03,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 21:14:03,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 21:14:03,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 21:14:03,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:14:03,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:03,706 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 21:14:03,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:03,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:03,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:03,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:03,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:03,710 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 21:14:03,710 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_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dacefd51bf525e1f18311af2c5b989a40c07b1caf3a58b24e0820913f865011 [2023-11-06 21:14:04,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:04,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:04,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:04,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:04,065 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:04,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-restricted-15/a.01.c [2023-11-06 21:14:07,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:07,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:07,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/sv-benchmarks/c/termination-restricted-15/a.01.c [2023-11-06 21:14:07,378 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/data/69f0ca3a4/fbbec6e5076349f9acae5f8bf4562d00/FLAG2b115b458 [2023-11-06 21:14:07,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/data/69f0ca3a4/fbbec6e5076349f9acae5f8bf4562d00 [2023-11-06 21:14:07,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:07,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:07,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:07,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:07,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:07,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c73e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07, skipping insertion in model container [2023-11-06 21:14:07,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:07,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:07,672 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:07,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:07,710 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:07,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07 WrapperNode [2023-11-06 21:14:07,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:07,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:07,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:07,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:07,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,748 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-11-06 21:14:07,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:07,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:07,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:07,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:07,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:07,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:07,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:07,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:07,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (1/1) ... [2023-11-06 21:14:07,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:07,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:07,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:07,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:07,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:07,947 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:07,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:08,026 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:08,032 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:08,033 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:14:08,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:08 BoogieIcfgContainer [2023-11-06 21:14:08,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:08,036 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 21:14:08,037 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 21:14:08,041 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 21:14:08,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:14:08,042 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 09:14:07" (1/3) ... [2023-11-06 21:14:08,044 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2974555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 09:14:08, skipping insertion in model container [2023-11-06 21:14:08,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:14:08,044 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:07" (2/3) ... [2023-11-06 21:14:08,044 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2974555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 09:14:08, skipping insertion in model container [2023-11-06 21:14:08,045 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:14:08,045 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:08" (3/3) ... [2023-11-06 21:14:08,046 INFO L332 chiAutomizerObserver]: Analyzing ICFG a.01.c [2023-11-06 21:14:08,114 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 21:14:08,114 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 21:14:08,115 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 21:14:08,115 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 21:14:08,115 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 21:14:08,115 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 21:14:08,117 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 21:14:08,118 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 21:14:08,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:08,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:14:08,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:14:08,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:14:08,145 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:14:08,145 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 21:14:08,145 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 21:14:08,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:08,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:14:08,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:14:08,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:14:08,148 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:14:08,148 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 21:14:08,156 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 9#L11-2true [2023-11-06 21:14:08,157 INFO L750 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 4#L13-2true assume !(main_~y~0#1 < main_~x~0#1); 6#L13-3true main_~x~0#1 := main_~x~0#1 - 1; 9#L11-2true [2023-11-06 21:14:08,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 21:14:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220934867] [2023-11-06 21:14:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:08,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:08,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-11-06 21:14:08,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:08,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076869434] [2023-11-06 21:14:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076869434] [2023-11-06 21:14:08,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076869434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:08,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:08,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141963958] [2023-11-06 21:14:08,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:08,472 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 21:14:08,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:08,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:08,512 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:08,538 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2023-11-06 21:14:08,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2023-11-06 21:14:08,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:14:08,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2023-11-06 21:14:08,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-06 21:14:08,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-06 21:14:08,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2023-11-06 21:14:08,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:08,547 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-06 21:14:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2023-11-06 21:14:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-06 21:14:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2023-11-06 21:14:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2023-11-06 21:14:08,576 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-06 21:14:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:08,583 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-06 21:14:08,583 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 21:14:08,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2023-11-06 21:14:08,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:14:08,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:14:08,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:14:08,586 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:14:08,586 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 21:14:08,586 INFO L748 eck$LassoCheckResult]: Stem: 30#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 31#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 33#L11-2 [2023-11-06 21:14:08,587 INFO L750 eck$LassoCheckResult]: Loop: 33#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 28#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 29#L13-2 assume !(main_~y~0#1 < main_~x~0#1); 32#L13-3 main_~x~0#1 := main_~x~0#1 - 1; 33#L11-2 [2023-11-06 21:14:08,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-06 21:14:08,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:08,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902226054] [2023-11-06 21:14:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:08,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2023-11-06 21:14:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608003342] [2023-11-06 21:14:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:08,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:08,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 889698226, now seen corresponding path program 1 times [2023-11-06 21:14:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:08,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567142740] [2023-11-06 21:14:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:08,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:08,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:08,760 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:14:08,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:14:08,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:14:08,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:14:08,762 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:14:08,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:08,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:14:08,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:14:08,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration2_Loop [2023-11-06 21:14:08,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:14:08,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:14:08,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:08,793 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:08,797 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:08,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:08,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:14:08,872 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:14:08,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:08,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:08,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:08,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:08,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:08,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 21:14:08,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:14:08,918 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:14:08,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:08,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:08,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:08,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:08,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:08,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:08,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 21:14:08,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:14:08,961 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:14:08,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:08,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:08,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 21:14:08,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:08,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:09,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:14:09,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:09,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 21:14:09,037 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:14:09,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,040 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:14:09,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:14:09,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:14:09,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:14:09,041 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:14:09,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:14:09,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:14:09,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration2_Loop [2023-11-06 21:14:09,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:14:09,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:14:09,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,049 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,053 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,061 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,115 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:14:09,120 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:14:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,143 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 [2023-11-06 21:14:09,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 21:14:09,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:14:09,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:14:09,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:14:09,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:14:09,162 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:14:09,162 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:14:09,176 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:14:09,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,197 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 [2023-11-06 21:14:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 21:14:09,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:14:09,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:14:09,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:14:09,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:14:09,215 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:14:09,215 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:14:09,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:14:09,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-06 21:14:09,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,254 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 [2023-11-06 21:14:09,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 21:14:09,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:14:09,265 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:14:09,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:14:09,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:14:09,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:14:09,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:14:09,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:14:09,272 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:14:09,276 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 21:14:09,276 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 21:14:09,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 21:14:09,308 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:14:09,308 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:14:09,308 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:14:09,309 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-06 21:14:09,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,315 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:14:09,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:09,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:14:09,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:09,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:14:09,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:14:09,415 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 [2023-11-06 21:14:09,416 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:09,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10 states and 13 transitions. Complement of second has 4 states. [2023-11-06 21:14:09,465 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 [2023-11-06 21:14:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 21:14:09,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-06 21:14:09,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:09,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-06 21:14:09,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:09,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-06 21:14:09,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:09,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2023-11-06 21:14:09,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 21:14:09,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 12 transitions. [2023-11-06 21:14:09,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-11-06 21:14:09,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-06 21:14:09,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2023-11-06 21:14:09,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 21:14:09,472 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2023-11-06 21:14:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2023-11-06 21:14:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-06 21:14:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-11-06 21:14:09,474 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 21:14:09,475 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 21:14:09,475 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 21:14:09,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-11-06 21:14:09,476 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 21:14:09,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:14:09,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:14:09,477 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 21:14:09,477 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 21:14:09,477 INFO L748 eck$LassoCheckResult]: Stem: 84#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 85#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 88#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 81#L13-2 [2023-11-06 21:14:09,477 INFO L750 eck$LassoCheckResult]: Loop: 81#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 81#L13-2 [2023-11-06 21:14:09,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:09,478 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 21:14:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213639212] [2023-11-06 21:14:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:09,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:09,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:09,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-11-06 21:14:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229684] [2023-11-06 21:14:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:09,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:09,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:09,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:09,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-11-06 21:14:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580941643] [2023-11-06 21:14:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:09,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:09,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:09,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:09,529 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:14:09,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:14:09,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:14:09,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:14:09,530 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:14:09,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:14:09,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:14:09,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration3_Loop [2023-11-06 21:14:09,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:14:09,531 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:14:09,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,590 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:14:09,591 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:14:09,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:09,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:09,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 21:14:09,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:14:09,630 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:14:09,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 21:14:09,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:09,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:09,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:14:09,679 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:14:09,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 21:14:09,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:09,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:09,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 21:14:09,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:14:09,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:09,892 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:14:09,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:09,896 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:14:09,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:14:09,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:14:09,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:14:09,896 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:14:09,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:14:09,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:14:09,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration3_Loop [2023-11-06 21:14:09,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:14:09,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:14:09,899 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,903 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:09,952 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:14:09,952 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:14:09,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:09,959 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:09,965 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 [2023-11-06 21:14:09,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:14:09,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:14:09,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:14:09,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:14:09,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 21:14:09,983 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:14:09,984 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:14:09,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:14:10,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:10,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,006 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,019 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 [2023-11-06 21:14:10,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 21:14:10,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:14:10,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:14:10,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:14:10,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:14:10,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:14:10,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:14:10,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:14:10,049 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:14:10,054 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-06 21:14:10,054 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 21:14:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,058 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,070 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:14:10,071 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:14:10,071 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:14:10,071 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-11-06 21:14:10,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 21:14:10,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:10,081 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:14:10,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:10,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:14:10,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:10,119 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:14:10,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:10,120 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 21:14:10,121 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:10,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 16 states and 21 transitions. Complement of second has 5 states. [2023-11-06 21:14:10,139 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 [2023-11-06 21:14:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 21:14:10,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2023-11-06 21:14:10,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:10,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2023-11-06 21:14:10,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:10,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-11-06 21:14:10,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:10,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2023-11-06 21:14:10,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 21:14:10,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2023-11-06 21:14:10,144 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-11-06 21:14:10,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-11-06 21:14:10,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2023-11-06 21:14:10,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 21:14:10,145 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-06 21:14:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2023-11-06 21:14:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2023-11-06 21:14:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-11-06 21:14:10,147 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-06 21:14:10,147 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-06 21:14:10,147 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 21:14:10,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2023-11-06 21:14:10,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 21:14:10,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:14:10,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:14:10,157 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-06 21:14:10,157 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 21:14:10,157 INFO L748 eck$LassoCheckResult]: Stem: 139#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 140#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 143#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 137#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 138#L13-2 assume !(main_~y~0#1 < main_~x~0#1); 141#L13-3 main_~x~0#1 := main_~x~0#1 - 1; 142#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 136#L13-2 [2023-11-06 21:14:10,157 INFO L750 eck$LassoCheckResult]: Loop: 136#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 136#L13-2 [2023-11-06 21:14:10,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 2 times [2023-11-06 21:14:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186090258] [2023-11-06 21:14:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:10,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186090258] [2023-11-06 21:14:10,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186090258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:10,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740194862] [2023-11-06 21:14:10,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:14:10,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:10,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,292 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 21:14:10,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:14:10,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:14:10,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:14:10,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:10,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:10,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740194862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:14:10,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:14:10,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-06 21:14:10,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858781428] [2023-11-06 21:14:10,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:10,410 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 21:14:10,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-11-06 21:14:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:10,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182213608] [2023-11-06 21:14:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:10,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:14:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:14:10,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:14:10,463 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:14:10,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:14:10,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:14:10,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:14:10,463 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:14:10,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:14:10,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:14:10,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration4_Loop [2023-11-06 21:14:10,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:14:10,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:14:10,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:10,474 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:10,479 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:10,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:14:10,521 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:14:10,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,526 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 21:14:10,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:14:10,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:10,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:10,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 21:14:10,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:14:10,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:14:10,714 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:14:10,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:10,718 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:14:10,719 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:14:10,719 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:14:10,719 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:14:10,719 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:14:10,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:14:10,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:14:10,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration4_Loop [2023-11-06 21:14:10,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:14:10,719 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:14:10,721 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:10,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:10,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:14:10,778 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:14:10,778 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:14:10,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,798 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 [2023-11-06 21:14:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 21:14:10,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:14:10,811 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:14:10,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:14:10,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:14:10,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:14:10,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:14:10,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:14:10,823 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:14:10,828 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-06 21:14:10,828 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 21:14:10,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:14:10,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:10,832 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:10,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 21:14:10,835 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:14:10,835 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:14:10,835 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:14:10,835 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-11-06 21:14:10,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-06 21:14:10,846 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:14:10,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:10,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:14:10,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:10,901 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:14:10,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:10,902 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 21:14:10,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:10,922 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 14 states and 18 transitions. Complement of second has 5 states. [2023-11-06 21:14:10,923 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 [2023-11-06 21:14:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 21:14:10,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-11-06 21:14:10,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:10,925 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 21:14:10,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:10,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:11,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:11,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:14:11,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:11,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:11,044 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:14:11,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:11,046 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 21:14:11,046 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:11,088 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 14 states and 18 transitions. Complement of second has 5 states. [2023-11-06 21:14:11,089 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 [2023-11-06 21:14:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 21:14:11,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-11-06 21:14:11,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:11,092 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 21:14:11,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:11,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:14:11,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:11,133 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:14:11,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:11,135 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 1 loop predicates [2023-11-06 21:14:11,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:11,158 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 11 states and 13 transitions. Complement of second has 4 states. [2023-11-06 21:14:11,159 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 [2023-11-06 21:14:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-06 21:14:11,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2023-11-06 21:14:11,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:11,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2023-11-06 21:14:11,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:11,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2023-11-06 21:14:11,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:14:11,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2023-11-06 21:14:11,170 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:14:11,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2023-11-06 21:14:11,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 21:14:11,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 21:14:11,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 21:14:11,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:11,171 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:14:11,171 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:14:11,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:14:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:14:11,173 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2023-11-06 21:14:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:11,173 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-06 21:14:11,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-06 21:14:11,173 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:14:11,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:14:11,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 21:14:11,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 21:14:11,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 21:14:11,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:11,174 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:14:11,174 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:14:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:14:11,176 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:14:11,176 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 21:14:11,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:14:11,176 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:14:11,177 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 21:14:11,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 09:14:11 BoogieIcfgContainer [2023-11-06 21:14:11,185 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 21:14:11,186 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:14:11,186 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:14:11,186 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:14:11,186 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:08" (3/4) ... [2023-11-06 21:14:11,188 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:14:11,190 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:14:11,190 INFO L158 Benchmark]: Toolchain (without parser) took 3780.77ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 99.6MB in the beginning and 143.4MB in the end (delta: -43.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:14:11,193 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:14:11,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.45ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 90.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:14:11,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.80ms. Allocated memory is still 144.7MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:14:11,201 INFO L158 Benchmark]: Boogie Preprocessor took 23.10ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 87.9MB in the end (delta: 888.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:14:11,201 INFO L158 Benchmark]: RCFGBuilder took 261.76ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 79.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 21:14:11,202 INFO L158 Benchmark]: BuchiAutomizer took 3148.61ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 79.5MB in the beginning and 143.4MB in the end (delta: -63.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:14:11,202 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 184.5MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:14:11,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.45ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 90.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.80ms. Allocated memory is still 144.7MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.10ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 87.9MB in the end (delta: 888.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.76ms. Allocated memory is still 144.7MB. Free memory was 87.9MB in the beginning and 79.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3148.61ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 79.5MB in the beginning and 143.4MB in the end (delta: -63.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 184.5MB. Free memory is still 143.4MB. There was no memory consumed. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function ((-1 * y) + x) and consists of 3 locations. One nondeterministic module has affine ranking function ((-1 * y) + x) and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 26 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax203 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-06 21:14:11,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:11,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc3e013-7195-4d3e-99ff-a0fb30681f42/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE