./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff 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_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:49,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:49,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:32:49,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:49,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:49,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:49,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:49,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:49,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:49,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:49,724 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:49,725 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:32:49,725 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:32:49,726 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:32:49,727 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:32:49,727 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:32:49,728 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:32:49,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:49,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:32:49,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:49,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:49,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:32:49,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:32:49,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:32:49,732 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:32:49,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:49,733 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:32:49,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:49,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:49,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:49,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:49,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:49,735 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:32:49,735 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_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 [2023-11-19 07:32:49,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:50,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:50,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:50,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:50,017 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:50,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-restricted-15/GCD4.c [2023-11-19 07:32:53,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:53,492 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:53,492 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/sv-benchmarks/c/termination-restricted-15/GCD4.c [2023-11-19 07:32:53,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/data/3534925d5/f262f36b55bc4b50becb92a8bdb7b3a2/FLAGbc57c2c79 [2023-11-19 07:32:53,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/data/3534925d5/f262f36b55bc4b50becb92a8bdb7b3a2 [2023-11-19 07:32:53,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:53,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:53,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:53,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:53,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:53,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37881286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:53,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:53,716 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:53,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:53,746 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:53,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53 WrapperNode [2023-11-19 07:32:53,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:53,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:53,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:53,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:53,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,781 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-11-19 07:32:53,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:53,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:53,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:53,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:53,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:53,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:53,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:53,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:53,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:32:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:53,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:53,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:53,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:54,031 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:54,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:54,165 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:54,174 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:54,177 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:32:54,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:54 BoogieIcfgContainer [2023-11-19 07:32:54,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:54,183 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:32:54,183 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:32:54,188 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:32:54,188 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:32:54,189 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:32:53" (1/3) ... [2023-11-19 07:32:54,190 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7065ea5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:32:54, skipping insertion in model container [2023-11-19 07:32:54,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:32:54,190 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53" (2/3) ... [2023-11-19 07:32:54,191 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7065ea5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:32:54, skipping insertion in model container [2023-11-19 07:32:54,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:32:54,191 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:54" (3/3) ... [2023-11-19 07:32:54,192 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD4.c [2023-11-19 07:32:54,247 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:32:54,247 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:32:54,247 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:32:54,247 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:32:54,248 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:32:54,248 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:32:54,248 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:32:54,248 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:32:54,253 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) [2023-11-19 07:32:54,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:32:54,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:32:54,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:32:54,278 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:32:54,278 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:32:54,278 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:32:54,278 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) [2023-11-19 07:32:54,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:32:54,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:32:54,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:32:54,280 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:32:54,281 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:32:54,287 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L13-2true [2023-11-19 07:32:54,288 INFO L750 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17-2true assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 9#L17-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 5#L13-2true [2023-11-19 07:32:54,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:32:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837969411] [2023-11-19 07:32:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:32:54,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:32:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:32:54,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:32:54,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-11-19 07:32:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388648507] [2023-11-19 07:32:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:32:54,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:32:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:32:54,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:32:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2023-11-19 07:32:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:54,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860538909] [2023-11-19 07:32:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:32:54,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:32:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:32:54,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:32:54,635 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:32:54,642 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:32:54,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:32:54,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:32:54,643 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:32:54,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:32:54,643 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:32:54,643 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:32:54,643 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2023-11-19 07:32:54,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:32:54,644 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:32:54,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:32:54,677 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:32:54,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:32:54,778 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:32:54,778 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:32:54,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:32:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:54,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:54,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:32:54,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:32:54,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:32:54,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:32:54,845 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: [] [2023-11-19 07:32:54,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-19 07:32:54,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:32:54,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:54,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:54,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:32:54,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:32:54,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:32:54,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:32:54,904 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: [] [2023-11-19 07:32:54,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:32:54,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:32:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:54,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:54,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:32:54,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:32:54,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:32:55,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:32:55,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:32:55,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:55,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:55,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:32:55,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:32:55,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:01,288 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:33:01,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:01,294 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:01,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:01,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:01,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:01,294 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:33:01,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:01,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:01,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:01,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2023-11-19 07:33:01,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:01,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:01,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:01,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:01,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:01,392 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:01,397 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:33:01,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:01,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:01,406 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 [2023-11-19 07:33:01,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:33:01,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:01,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:01,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:01,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:01,427 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:01,427 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:01,440 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:01,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:01,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:01,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:01,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:01,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:33:01,494 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 [2023-11-19 07:33:01,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:01,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:01,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:01,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:01,512 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:01,512 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:01,526 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:01,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:01,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:01,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:01,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:01,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:33:01,557 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 [2023-11-19 07:33:01,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:01,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:33:01,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:01,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:01,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:01,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:33:01,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:33:01,591 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:33:01,603 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:33:01,603 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:33:01,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:01,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:01,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:33:01,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:33:01,635 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:33:01,636 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:33:01,636 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 [] [2023-11-19 07:33:01,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:01,657 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:33:01,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:01,688 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:01,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:01,704 WARN L260 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:33:01,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:01,815 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 07:33:01,817 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,911 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 30 states and 47 transitions. Complement of second has 10 states. [2023-11-19 07:33:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 07:33:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2023-11-19 07:33:01,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-19 07:33:01,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:01,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-19 07:33:01,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:01,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 23 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-19 07:33:01,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:01,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 47 transitions. [2023-11-19 07:33:01,927 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 07:33:01,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 12 states and 17 transitions. [2023-11-19 07:33:01,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-19 07:33:01,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-11-19 07:33:01,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2023-11-19 07:33:01,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:33:01,934 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-11-19 07:33:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2023-11-19 07:33:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-19 07:33:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2023-11-19 07:33:01,961 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-11-19 07:33:01,961 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-11-19 07:33:01,961 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:33:01,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2023-11-19 07:33:01,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 07:33:01,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:33:01,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:33:01,963 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:33:01,963 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:33:01,963 INFO L748 eck$LassoCheckResult]: Stem: 93#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 94#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_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~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; 96#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 86#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 87#L17-2 [2023-11-19 07:33:01,964 INFO L750 eck$LassoCheckResult]: Loop: 87#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 87#L17-2 [2023-11-19 07:33:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,965 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-11-19 07:33:01,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808951875] [2023-11-19 07:33:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:01,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:01,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:01,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-11-19 07:33:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937556551] [2023-11-19 07:33:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:01,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:01,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:01,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2023-11-19 07:33:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328507861] [2023-11-19 07:33:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:02,046 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:02,046 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:02,046 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:02,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:02,047 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:33:02,047 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:02,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:02,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2023-11-19 07:33:02,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:02,048 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:02,049 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:02,053 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:02,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:02,100 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:02,100 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:33:02,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:33:02,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:02,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:02,130 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:33:02,131 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: [] [2023-11-19 07:33:02,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:02,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:02,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:33:02,184 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:33:02,185 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: [] [2023-11-19 07:33:02,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,209 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:33:02,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:02,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:02,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,261 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:33:02,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:33:02,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:02,425 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:33:02,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,429 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:02,429 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:02,429 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:02,429 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:02,429 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:33:02,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:02,429 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:02,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2023-11-19 07:33:02,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:02,430 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:02,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:02,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:02,447 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:02,506 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:02,506 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:33:02,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,519 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 [2023-11-19 07:33:02,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:33:02,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:02,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:02,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:02,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:02,537 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:02,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:02,549 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:02,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:33:02,586 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 [2023-11-19 07:33:02,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:02,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:02,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:02,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:02,603 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:02,603 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:02,632 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:02,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,658 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,670 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 [2023-11-19 07:33:02,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:02,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:33:02,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:02,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:02,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:02,692 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:33:02,692 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:33:02,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:33:02,712 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:33:02,718 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-19 07:33:02,719 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-11-19 07:33:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:02,721 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:02,728 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:33:02,729 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:33:02,729 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:33:02,729 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-11-19 07:33:02,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:33:02,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:02,752 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:33:02,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:02,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:02,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:02,786 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:33:02,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:02,788 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 [2023-11-19 07:33:02,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-19 07:33:02,801 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 16 states and 23 transitions. Complement of second has 5 states. [2023-11-19 07:33:02,802 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 [2023-11-19 07:33:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-19 07:33:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-11-19 07:33:02,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2023-11-19 07:33:02,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:02,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2023-11-19 07:33:02,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:02,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-19 07:33:02,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:02,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-11-19 07:33:02,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:33:02,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2023-11-19 07:33:02,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-19 07:33:02,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-19 07:33:02,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-11-19 07:33:02,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:33:02,808 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-11-19 07:33:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-11-19 07:33:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-11-19 07:33:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 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) [2023-11-19 07:33:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2023-11-19 07:33:02,810 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 18 transitions. [2023-11-19 07:33:02,810 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2023-11-19 07:33:02,810 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:33:02,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2023-11-19 07:33:02,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:33:02,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:33:02,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:33:02,813 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-19 07:33:02,813 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:33:02,814 INFO L748 eck$LassoCheckResult]: Stem: 154#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 157#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 152#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 158#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 148#L17-3 [2023-11-19 07:33:02,814 INFO L750 eck$LassoCheckResult]: Loop: 148#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 150#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 147#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 148#L17-3 [2023-11-19 07:33:02,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2023-11-19 07:33:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:02,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166348103] [2023-11-19 07:33:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:02,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 53214, now seen corresponding path program 2 times [2023-11-19 07:33:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417432195] [2023-11-19 07:33:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:02,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 301503641, now seen corresponding path program 1 times [2023-11-19 07:33:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605432269] [2023-11-19 07:33:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:03,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:03,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:03,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605432269] [2023-11-19 07:33:03,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605432269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:03,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072408609] [2023-11-19 07:33:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:03,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:03,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:03,131 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:03,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:33:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:03,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:33:03,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:03,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:03,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072408609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:03,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:33:03,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:33:03,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993193351] [2023-11-19 07:33:03,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:03,416 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:03,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:03,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:03,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:03,417 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:33:03,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:03,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:03,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:03,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2023-11-19 07:33:03,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:03,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:03,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:03,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:03,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:03,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:03,499 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:33:03,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:03,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:03,500 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:03,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:33:03,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:03,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:03,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-19 07:33:03,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:03,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:03,550 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:03,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:33:03,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:33:03,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:05,572 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:33:05,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:05,576 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:05,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:05,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:05,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:05,577 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:33:05,577 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:05,577 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:05,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:05,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2023-11-19 07:33:05,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:05,577 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:05,579 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:05,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:05,605 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:05,675 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:05,675 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:33:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:05,677 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:05,686 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 [2023-11-19 07:33:05,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:33:05,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:05,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:33:05,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:05,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:05,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:05,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:33:05,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:33:05,714 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:33:05,718 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:33:05,718 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:33:05,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:05,721 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:05,729 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:33:05,729 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:33:05,729 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:33:05,729 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-11-19 07:33:05,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:33:05,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:05,755 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:33:05,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:05,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:05,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:05,792 WARN L260 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:33:05,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:05,822 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 07:33:05,823 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:05,856 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 53 transitions. Complement of second has 10 states. [2023-11-19 07:33:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 07:33:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-19 07:33:05,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-19 07:33:05,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:05,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2023-11-19 07:33:05,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:05,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2023-11-19 07:33:05,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:05,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 53 transitions. [2023-11-19 07:33:05,862 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 07:33:05,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 25 states and 36 transitions. [2023-11-19 07:33:05,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-19 07:33:05,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-19 07:33:05,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 36 transitions. [2023-11-19 07:33:05,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:33:05,863 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-11-19 07:33:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 36 transitions. [2023-11-19 07:33:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-11-19 07:33:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 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) [2023-11-19 07:33:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2023-11-19 07:33:05,867 INFO L240 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2023-11-19 07:33:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:33:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:33:05,871 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:06,006 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2023-11-19 07:33:06,006 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2023-11-19 07:33:06,009 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2023-11-19 07:33:06,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 27 transitions. [2023-11-19 07:33:06,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-19 07:33:06,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-19 07:33:06,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2023-11-19 07:33:06,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:33:06,011 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-11-19 07:33:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2023-11-19 07:33:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2023-11-19 07:33:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2023-11-19 07:33:06,015 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-11-19 07:33:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:33:06,017 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-11-19 07:33:06,018 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:33:06,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2023-11-19 07:33:06,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:33:06,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:33:06,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:33:06,022 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-19 07:33:06,022 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:33:06,022 INFO L748 eck$LassoCheckResult]: Stem: 360#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 361#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_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~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; 362#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 364#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 363#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 358#L17-3 [2023-11-19 07:33:06,022 INFO L750 eck$LassoCheckResult]: Loop: 358#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 359#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 355#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 356#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 358#L17-3 [2023-11-19 07:33:06,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 2 times [2023-11-19 07:33:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:06,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003981794] [2023-11-19 07:33:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:06,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:06,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:06,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:06,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1649714, now seen corresponding path program 1 times [2023-11-19 07:33:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779292286] [2023-11-19 07:33:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:06,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:06,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:06,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:06,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 756678359, now seen corresponding path program 2 times [2023-11-19 07:33:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:06,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164076761] [2023-11-19 07:33:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:06,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:06,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:06,171 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:06,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:06,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:06,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:06,172 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:33:06,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:06,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:06,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:06,172 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2023-11-19 07:33:06,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:06,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:06,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:06,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:06,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:06,260 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:06,261 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:33:06,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:06,262 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:06,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:06,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:06,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:33:06,288 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:33:06,288 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:33:06,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:06,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:06,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:06,307 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:06,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:06,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:06,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:33:06,330 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:33:06,330 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:33:06,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:06,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:06,356 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:06,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:06,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:06,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:33:06,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:06,428 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:06,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:33:06,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:06,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:33:08,407 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:33:08,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:08,413 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:08,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:08,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:08,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:08,413 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:33:08,413 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:08,413 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:08,413 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:08,413 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2023-11-19 07:33:08,413 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:08,413 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:08,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:08,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:08,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:08,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:08,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:33:08,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:08,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:08,502 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:08,509 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 [2023-11-19 07:33:08,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:33:08,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:08,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:08,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:08,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:08,525 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:08,526 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:08,552 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:08,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-19 07:33:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:08,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:08,572 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:08,581 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 [2023-11-19 07:33:08,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:08,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:08,594 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:08,594 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:08,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:33:08,596 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:08,597 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:08,648 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:08,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:08,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:08,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:08,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:08,675 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:08,677 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 [2023-11-19 07:33:08,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:08,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:33:08,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:08,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:08,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:33:08,693 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:33:08,693 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:33:08,716 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:33:08,720 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:33:08,721 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:33:08,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:08,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:08,722 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:08,725 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:33:08,725 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:33:08,725 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:33:08,725 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-11-19 07:33:08,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:33:08,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:08,746 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:33:08,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:08,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:08,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:08,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:33:08,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:08,819 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 07:33:08,819 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:08,856 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 33 transitions. Complement of second has 6 states. [2023-11-19 07:33:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:33:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-19 07:33:08,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2023-11-19 07:33:08,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:08,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-19 07:33:08,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:08,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2023-11-19 07:33:08,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:08,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2023-11-19 07:33:08,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:33:08,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 28 transitions. [2023-11-19 07:33:08,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-19 07:33:08,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-19 07:33:08,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2023-11-19 07:33:08,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:33:08,867 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-11-19 07:33:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2023-11-19 07:33:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2023-11-19 07:33:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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) [2023-11-19 07:33:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2023-11-19 07:33:08,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-19 07:33:08,872 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-19 07:33:08,872 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:33:08,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2023-11-19 07:33:08,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:33:08,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:33:08,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:33:08,876 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:33:08,876 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:33:08,876 INFO L748 eck$LassoCheckResult]: Stem: 448#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 449#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 452#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 457#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 455#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 453#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 446#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 443#L17-2 [2023-11-19 07:33:08,877 INFO L750 eck$LassoCheckResult]: Loop: 443#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 443#L17-2 [2023-11-19 07:33:08,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:08,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 3 times [2023-11-19 07:33:08,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852862481] [2023-11-19 07:33:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:08,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:08,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:08,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:08,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-11-19 07:33:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:08,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33728305] [2023-11-19 07:33:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:08,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:08,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:08,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:08,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 4 times [2023-11-19 07:33:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:08,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850591113] [2023-11-19 07:33:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:08,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:08,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:08,988 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:08,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:08,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:08,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:08,988 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:33:08,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:08,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:08,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:08,989 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2023-11-19 07:33:08,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:08,989 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:08,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:08,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:08,996 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:09,038 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:09,038 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:33:09,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,040 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:09,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:09,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:33:09,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:33:09,076 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:33:09,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-19 07:33:09,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,096 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 07:33:09,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:09,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:09,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:33:09,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:33:09,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,135 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:33:09,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:09,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:33:09,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-19 07:33:09,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,164 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:33:09,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:33:09,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:33:09,276 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:33:09,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:09,280 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:33:09,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:33:09,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:33:09,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:33:09,281 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:33:09,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:33:09,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:33:09,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2023-11-19 07:33:09,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:33:09,281 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:33:09,282 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:09,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:09,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:33:09,343 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:33:09,343 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:33:09,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,345 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,347 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 [2023-11-19 07:33:09,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:09,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:09,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:09,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:09,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:33:09,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:33:09,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 07:33:09,380 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:33:09,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:09,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,405 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,413 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 [2023-11-19 07:33:09,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 07:33:09,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:33:09,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:33:09,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:33:09,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:33:09,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:33:09,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:33:09,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:33:09,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:33:09,461 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-19 07:33:09,461 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-11-19 07:33:09,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:33:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,464 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,465 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:33:09,466 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:33:09,466 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:33:09,466 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-11-19 07:33:09,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 07:33:09,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-19 07:33:09,483 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:33:09,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,537 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:09,539 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 [2023-11-19 07:33:09,539 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:09,556 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 29 transitions. Complement of second has 5 states. [2023-11-19 07:33:09,557 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 [2023-11-19 07:33:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:33:09,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-11-19 07:33:09,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:09,561 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:33:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,610 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:09,614 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-19 07:33:09,614 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:09,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 29 transitions. Complement of second has 5 states. [2023-11-19 07:33:09,629 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 [2023-11-19 07:33:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:33:09,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-11-19 07:33:09,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:09,633 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:33:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,678 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:09,679 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-19 07:33:09,680 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:09,698 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 31 transitions. Complement of second has 4 states. [2023-11-19 07:33:09,699 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 [2023-11-19 07:33:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-19 07:33:09,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2023-11-19 07:33:09,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:09,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2023-11-19 07:33:09,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:09,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2023-11-19 07:33:09,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:33:09,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2023-11-19 07:33:09,706 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:33:09,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2023-11-19 07:33:09,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:33:09,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:33:09,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:33:09,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:09,707 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:33:09,707 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:33:09,708 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:33:09,708 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:33:09,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:33:09,708 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:33:09,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:33:09,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:33:09 BoogieIcfgContainer [2023-11-19 07:33:09,719 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:33:09,720 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:33:09,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:33:09,720 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:33:09,721 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:54" (3/4) ... [2023-11-19 07:33:09,725 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:33:09,727 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:33:09,728 INFO L158 Benchmark]: Toolchain (without parser) took 16207.68ms. Allocated memory was 195.0MB in the beginning and 262.1MB in the end (delta: 67.1MB). Free memory was 149.7MB in the beginning and 184.3MB in the end (delta: -34.6MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2023-11-19 07:33:09,728 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 130.0MB. Free memory was 81.7MB in the beginning and 81.6MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:09,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.87ms. Allocated memory is still 195.0MB. Free memory was 149.7MB in the beginning and 140.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:33:09,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.46ms. Allocated memory is still 195.0MB. Free memory was 140.2MB in the beginning and 139.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:09,730 INFO L158 Benchmark]: Boogie Preprocessor took 22.62ms. Allocated memory is still 195.0MB. Free memory was 139.2MB in the beginning and 138.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:09,730 INFO L158 Benchmark]: RCFGBuilder took 376.09ms. Allocated memory is still 195.0MB. Free memory was 138.1MB in the beginning and 129.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:33:09,731 INFO L158 Benchmark]: BuchiAutomizer took 15535.91ms. Allocated memory was 195.0MB in the beginning and 262.1MB in the end (delta: 67.1MB). Free memory was 129.3MB in the beginning and 185.4MB in the end (delta: -56.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-11-19 07:33:09,732 INFO L158 Benchmark]: Witness Printer took 7.33ms. Allocated memory is still 262.1MB. Free memory was 185.4MB in the beginning and 184.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:09,734 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 130.0MB. Free memory was 81.7MB in the beginning and 81.6MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.87ms. Allocated memory is still 195.0MB. Free memory was 149.7MB in the beginning and 140.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.46ms. Allocated memory is still 195.0MB. Free memory was 140.2MB in the beginning and 139.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.62ms. Allocated memory is still 195.0MB. Free memory was 139.2MB in the beginning and 138.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 376.09ms. Allocated memory is still 195.0MB. Free memory was 138.1MB in the beginning and 129.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 15535.91ms. Allocated memory was 195.0MB in the beginning and 262.1MB in the end (delta: 67.1MB). Free memory was 129.3MB in the beginning and 185.4MB in the end (delta: -56.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Witness Printer took 7.33ms. Allocated memory is still 262.1MB. Free memory was 185.4MB in the beginning and 184.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.4s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 14.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 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 [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 40 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf91 smp100 dnf100 smp100 tf107 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 11.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:33:09,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:09,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-19 07:33:10,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-19 07:33:10,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ad8d49-6671-4076-bf15-192d59c490ab/bin/uautomizer-verify-uCwYo4JHxu/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