./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.16.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_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/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_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/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_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/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 bd5ab01fc166812a75c8bdc5c42111290012e12e0fb0aba380271d0f3f7f7767 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:49:21,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:49:21,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 22:49:21,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:49:21,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:49:21,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:49:21,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:49:21,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:49:21,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:49:21,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:49:21,283 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:49:21,284 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:49:21,284 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:49:21,286 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:49:21,287 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:49:21,287 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:49:21,288 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:49:21,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:49:21,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:49:21,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:49:21,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:49:21,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:49:21,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:49:21,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:49:21,292 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:49:21,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:49:21,293 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:49:21,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:49:21,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:49:21,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:49:21,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:49:21,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:49:21,297 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:49:21,298 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_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5ab01fc166812a75c8bdc5c42111290012e12e0fb0aba380271d0f3f7f7767 [2023-11-06 22:49:21,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:49:21,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:49:21,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:49:21,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:49:21,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:49:21,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-restricted-15/b.16.c [2023-11-06 22:49:25,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:49:25,287 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:49:25,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/sv-benchmarks/c/termination-restricted-15/b.16.c [2023-11-06 22:49:25,296 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/data/384aa9dac/e230e49df75f41c2b19ba929fbd956cd/FLAG6d5c5090a [2023-11-06 22:49:25,317 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/data/384aa9dac/e230e49df75f41c2b19ba929fbd956cd [2023-11-06 22:49:25,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:49:25,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:49:25,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:25,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:49:25,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:49:25,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ad9985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25, skipping insertion in model container [2023-11-06 22:49:25,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,360 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:49:25,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:25,516 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:49:25,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:25,544 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:49:25,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25 WrapperNode [2023-11-06 22:49:25,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:25,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:25,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:49:25,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:49:25,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,581 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-11-06 22:49:25,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:25,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:49:25,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:49:25,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:49:25,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:49:25,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:49:25,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:49:25,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:49:25,608 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:25,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:25,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:49:25,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:49:25,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:49:25,813 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:49:25,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:49:25,928 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:49:25,941 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:49:25,941 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:49:25,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:25 BoogieIcfgContainer [2023-11-06 22:49:25,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:49:25,945 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:49:25,945 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:49:25,949 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:49:25,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:49:25,950 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:49:25" (1/3) ... [2023-11-06 22:49:25,951 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b8ee639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:49:25, skipping insertion in model container [2023-11-06 22:49:25,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:49:25,952 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (2/3) ... [2023-11-06 22:49:25,952 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b8ee639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:49:25, skipping insertion in model container [2023-11-06 22:49:25,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:49:25,952 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:25" (3/3) ... [2023-11-06 22:49:25,954 INFO L332 chiAutomizerObserver]: Analyzing ICFG b.16.c [2023-11-06 22:49:26,049 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:49:26,051 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:49:26,051 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:49:26,052 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:49:26,052 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:49:26,052 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:49:26,054 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:49:26,055 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:49:26,060 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 22:49:26,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 22:49:26,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:49:26,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:49:26,096 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:49:26,096 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 22:49:26,096 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:49:26,097 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 22:49:26,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 22:49:26,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:49:26,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:49:26,101 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:49:26,102 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 22:49:26,115 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 9#L11-2true [2023-11-06 22:49:26,116 INFO L750 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~x~0#1 > 0); 2#L12-2true assume !(main_~y~0#1 > 0); 4#L12-3true main_~x~0#1 := main_~x~0#1 - 1; 9#L11-2true [2023-11-06 22:49:26,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:49:26,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:26,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876707088] [2023-11-06 22:49:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:26,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:26,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:26,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-11-06 22:49:26,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:26,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529804200] [2023-11-06 22:49:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:26,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:26,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:26,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:26,342 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2023-11-06 22:49:26,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:26,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776539784] [2023-11-06 22:49:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:26,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:26,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:26,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:26,551 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:49:26,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:49:26,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:49:26,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:49:26,552 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:49:26,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:49:26,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:49:26,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2023-11-06 22:49:26,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:49:26,554 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:49:26,578 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 22:49:26,601 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 22:49:26,607 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 22:49:26,616 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 22:49:26,711 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:49:26,711 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:49:26,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:26,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:26,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:49:26,759 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:49:26,760 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 22:49:26,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:26,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:26,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:26,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:49:26,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:49:26,803 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 22:49:26,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:26,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:49:26,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:26,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:26,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:49:26,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:49:26,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:26,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:49:26,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:26,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:26,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:26,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:49:26,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:49:26,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:26,949 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:49:26,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:26,961 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:49:26,961 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:49:26,961 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:49:26,961 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:49:26,961 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:49:26,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:26,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:49:26,961 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:49:26,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2023-11-06 22:49:26,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:49:26,962 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:49:26,964 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 22:49:26,969 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 22:49:26,974 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 22:49:26,978 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 22:49:27,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:49:27,037 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:49:27,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:49:27,063 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 22:49:27,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:27,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:27,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:27,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:27,090 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:49:27,091 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:49:27,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:49:27,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,145 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 22:49:27,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:49:27,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:27,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:27,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:27,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:27,173 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:49:27,174 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:49:27,193 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:49:27,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,213 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 22:49:27,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:49:27,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:27,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:49:27,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:27,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:27,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:27,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:49:27,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:49:27,232 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:49:27,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,238 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:49:27,241 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 22:49:27,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:27,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:49:27,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:27,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:27,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:27,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:49:27,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:49:27,266 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:49:27,269 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:49:27,270 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:49:27,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:49:27,304 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:49:27,304 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:49:27,304 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:49:27,305 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 22:49:27,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,311 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:49:27,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:49:27,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,376 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:49:27,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:27,445 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 22:49:27,447 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:27,505 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 34 transitions. Complement of second has 8 states. [2023-11-06 22:49:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-06 22:49:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-11-06 22:49:27,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-06 22:49:27,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:49:27,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-06 22:49:27,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:49:27,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-06 22:49:27,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:49:27,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2023-11-06 22:49:27,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 22:49:27,525 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 8 states and 11 transitions. [2023-11-06 22:49:27,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-11-06 22:49:27,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-06 22:49:27,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-11-06 22:49:27,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:49:27,527 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 22:49:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-11-06 22:49:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-11-06 22:49:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 22:49:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2023-11-06 22:49:27,550 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-11-06 22:49:27,550 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-11-06 22:49:27,551 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:49:27,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2023-11-06 22:49:27,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 22:49:27,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:49:27,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:49:27,552 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:49:27,552 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 22:49:27,552 INFO L748 eck$LassoCheckResult]: Stem: 77#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 78#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; 79#L11-2 assume !!(main_~x~0#1 > 0); 73#L12-2 [2023-11-06 22:49:27,553 INFO L750 eck$LassoCheckResult]: Loop: 73#L12-2 assume !!(main_~y~0#1 > 0);main_~y~0#1 := main_~y~0#1 - 1; 73#L12-2 [2023-11-06 22:49:27,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 22:49:27,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179157343] [2023-11-06 22:49:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,564 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:27,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-11-06 22:49:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459564183] [2023-11-06 22:49:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:27,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:27,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-11-06 22:49:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:27,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032307354] [2023-11-06 22:49:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:49:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:49:27,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:49:27,607 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:49:27,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:49:27,608 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:49:27,608 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:49:27,608 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:49:27,608 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:49:27,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:49:27,609 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2023-11-06 22:49:27,609 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:49:27,609 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:49:27,611 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 22:49:27,615 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 22:49:27,620 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 22:49:27,665 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:49:27,666 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:49:27,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,668 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:27,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:27,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 22:49:27,716 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:49:27,716 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 22:49:27,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,722 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:49:27,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:27,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:27,748 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:49:27,748 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 22:49:27,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,768 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:49:27,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:27,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:49:27,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,810 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:49:27,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:49:27,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:49:27,868 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:49:27,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,874 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:49:27,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:49:27,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:49:27,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:49:27,874 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:49:27,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,875 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:49:27,875 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:49:27,875 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2023-11-06 22:49:27,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:49:27,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:49:27,877 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 22:49:27,882 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 22:49:27,886 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 22:49:27,934 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:49:27,934 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:49:27,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,936 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,941 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 22:49:27,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:49:27,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:27,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:27,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:27,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:27,967 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:49:27,967 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:49:27,984 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:49:27,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:27,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:27,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:27,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:27,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:49:27,994 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 22:49:28,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:28,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:28,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:28,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:28,009 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:49:28,009 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:49:28,021 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:49:28,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:28,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:28,039 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:28,049 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 22:49:28,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 22:49:28,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:49:28,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:49:28,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:49:28,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:49:28,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:49:28,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:49:28,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:49:28,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:49:28,074 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:49:28,074 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:49:28,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:49:28,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:28,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:28,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:49:28,078 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:49:28,079 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:49:28,079 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:49:28,079 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-11-06 22:49:28,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-06 22:49:28,086 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:49:28,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:49:28,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,126 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:49:28,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:28,128 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 22:49:28,129 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 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 22:49:28,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 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 14 states and 19 transitions. Complement of second has 4 states. [2023-11-06 22:49:28,139 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 22:49:28,140 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 22:49:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-11-06 22:49:28,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 1 letters. [2023-11-06 22:49:28,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:49:28,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2023-11-06 22:49:28,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:49:28,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2023-11-06 22:49:28,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:49:28,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2023-11-06 22:49:28,144 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:49:28,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2023-11-06 22:49:28,144 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:49:28,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:49:28,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:49:28,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:28,145 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:49:28,145 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:49:28,145 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:49:28,145 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:49:28,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:49:28,146 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:49:28,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 22:49:28,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:49:28 BoogieIcfgContainer [2023-11-06 22:49:28,160 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:49:28,160 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:49:28,161 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:49:28,161 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:49:28,162 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:25" (3/4) ... [2023-11-06 22:49:28,164 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:49:28,165 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:49:28,166 INFO L158 Benchmark]: Toolchain (without parser) took 2839.53ms. Allocated memory was 130.0MB in the beginning and 174.1MB in the end (delta: 44.0MB). Free memory was 84.7MB in the beginning and 86.2MB in the end (delta: -1.5MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2023-11-06 22:49:28,167 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 130.0MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:28,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.45ms. Allocated memory is still 130.0MB. Free memory was 84.2MB in the beginning and 75.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:49:28,168 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.74ms. Allocated memory is still 130.0MB. Free memory was 75.3MB in the beginning and 73.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:49:28,169 INFO L158 Benchmark]: Boogie Preprocessor took 23.02ms. Allocated memory is still 130.0MB. Free memory was 73.7MB in the beginning and 73.1MB in the end (delta: 671.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:28,169 INFO L158 Benchmark]: RCFGBuilder took 337.68ms. Allocated memory is still 130.0MB. Free memory was 72.6MB in the beginning and 64.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:49:28,170 INFO L158 Benchmark]: BuchiAutomizer took 2214.94ms. Allocated memory was 130.0MB in the beginning and 174.1MB in the end (delta: 44.0MB). Free memory was 64.2MB in the beginning and 87.2MB in the end (delta: -23.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-11-06 22:49:28,170 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 174.1MB. Free memory was 87.2MB in the beginning and 86.2MB in the end (delta: 976.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:49:28,177 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 130.0MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.45ms. Allocated memory is still 130.0MB. Free memory was 84.2MB in the beginning and 75.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.74ms. Allocated memory is still 130.0MB. Free memory was 75.3MB in the beginning and 73.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.02ms. Allocated memory is still 130.0MB. Free memory was 73.7MB in the beginning and 73.1MB in the end (delta: 671.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 337.68ms. Allocated memory is still 130.0MB. Free memory was 72.6MB in the beginning and 64.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2214.94ms. Allocated memory was 130.0MB in the beginning and 174.1MB in the end (delta: 44.0MB). Free memory was 64.2MB in the beginning and 87.2MB in the end (delta: -23.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 174.1MB. Free memory was 87.2MB in the beginning and 86.2MB in the end (delta: 976.1kB). 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax206 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 89ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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 22:49:28,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:28,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:28,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc1d11e-5f3d-4708-a93f-85ebe431fdfd/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