./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6f4e1dd3818e9d3e8c54653af66359ead501b84 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:11:32,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:11:32,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:11:32,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:11:32,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:11:32,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:11:32,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:11:32,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:11:32,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:11:32,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:11:32,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:11:32,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:11:32,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:11:32,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:11:32,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:11:32,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:11:32,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:11:32,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:11:32,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:11:32,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:11:32,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:11:32,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:11:32,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:11:32,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:11:32,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:11:32,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:11:32,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:11:32,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:11:32,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:11:32,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:11:32,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:11:32,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:11:32,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:11:32,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:11:32,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:11:32,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:11:32,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:11:32,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:11:32,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:11:32,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:11:32,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:11:32,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-15 19:11:32,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:11:32,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:11:32,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:11:32,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:11:32,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:11:32,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:11:32,367 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:11:32,367 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 19:11:32,367 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 19:11:32,368 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 19:11:32,369 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 19:11:32,369 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 19:11:32,369 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 19:11:32,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:11:32,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:11:32,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:11:32,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:11:32,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:11:32,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:11:32,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 19:11:32,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 19:11:32,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 19:11:32,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:11:32,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:11:32,372 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 19:11:32,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:11:32,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 19:11:32,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:11:32,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:11:32,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:11:32,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:11:32,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:11:32,376 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 19:11:32,376 INFO L138 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_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2021-10-15 19:11:32,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:11:32,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:11:32,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:11:32,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:11:32,791 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:11:32,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/recursive/gcd01-1.c [2021-10-15 19:11:32,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/data/251e7879e/4edcb6a9dec743bbb24dab35f12b985b/FLAG1c6d777b6 [2021-10-15 19:11:33,505 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:11:33,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/sv-benchmarks/c/recursive/gcd01-1.c [2021-10-15 19:11:33,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/data/251e7879e/4edcb6a9dec743bbb24dab35f12b985b/FLAG1c6d777b6 [2021-10-15 19:11:33,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/data/251e7879e/4edcb6a9dec743bbb24dab35f12b985b [2021-10-15 19:11:33,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:11:33,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:11:33,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:11:33,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:11:33,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:11:33,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:11:33" (1/1) ... [2021-10-15 19:11:33,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b67a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:33, skipping insertion in model container [2021-10-15 19:11:33,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:11:33" (1/1) ... [2021-10-15 19:11:33,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:11:33,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:11:34,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-10-15 19:11:34,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:11:34,175 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:11:34,193 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-10-15 19:11:34,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:11:34,208 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:11:34,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34 WrapperNode [2021-10-15 19:11:34,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:11:34,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:11:34,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:11:34,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:11:34,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:11:34,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:11:34,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:11:34,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:11:34,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:11:34,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:11:34,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:11:34,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:11:34,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (1/1) ... [2021-10-15 19:11:34,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:34,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:34,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:34,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 19:11:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-10-15 19:11:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-10-15 19:11:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:11:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:11:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:11:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:11:34,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:11:34,683 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:11:34,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:11:34 BoogieIcfgContainer [2021-10-15 19:11:34,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:11:34,691 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 19:11:34,692 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 19:11:34,695 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 19:11:34,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:11:34,712 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 07:11:33" (1/3) ... [2021-10-15 19:11:34,715 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71befb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 07:11:34, skipping insertion in model container [2021-10-15 19:11:34,715 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:11:34,715 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:34" (2/3) ... [2021-10-15 19:11:34,716 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71befb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 07:11:34, skipping insertion in model container [2021-10-15 19:11:34,716 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:11:34,716 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:11:34" (3/3) ... [2021-10-15 19:11:34,718 INFO L389 chiAutomizerObserver]: Analyzing ICFG gcd01-1.c [2021-10-15 19:11:34,769 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 19:11:34,769 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 19:11:34,769 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 19:11:34,770 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 19:11:34,770 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 19:11:34,770 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 19:11:34,770 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 19:11:34,770 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 19:11:34,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:11:34,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-15 19:11:34,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:11:34,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:11:34,821 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-15 19:11:34,821 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 19:11:34,822 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 19:11:34,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:11:34,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-15 19:11:34,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:11:34,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:11:34,828 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-15 19:11:34,828 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 19:11:34,836 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 11#L32true assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 12#L36true assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 22#L39true call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 23#gcdENTRYtrue [2021-10-15 19:11:34,836 INFO L793 eck$LassoCheckResult]: Loop: 23#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 7#L18true assume !(~y1 <= 0 || ~y2 <= 0); 13#L21true assume !(~y1 == ~y2); 19#L24true assume !(~y1 > ~y2); 18#L27true call #t~ret8 := gcd(~y1, ~y2 - ~y1);< 23#gcdENTRYtrue [2021-10-15 19:11:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash 45873351, now seen corresponding path program 1 times [2021-10-15 19:11:34,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:34,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024211379] [2021-10-15 19:11:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:34,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:34,990 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:35,074 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:35,086 INFO L82 PathProgramCache]: Analyzing trace with hash 28756482, now seen corresponding path program 1 times [2021-10-15 19:11:35,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:35,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083890232] [2021-10-15 19:11:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:35,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:35,109 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:35,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash -6988548, now seen corresponding path program 1 times [2021-10-15 19:11:35,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:35,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45149679] [2021-10-15 19:11:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:35,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:35,185 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:35,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:35,491 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:11:35,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:11:35,492 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:11:35,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:11:35,493 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:11:35,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:35,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:11:35,493 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:11:35,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration1_Loop [2021-10-15 19:11:35,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:11:35,494 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:11:35,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:35,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:35,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:35,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:35,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:35,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:35,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:11:35,620 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:11:35,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:35,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:35,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:35,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-15 19:11:35,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:11:35,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:35,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:11:35,744 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:11:35,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-15 19:11:35,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:35,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:35,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:11:35,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:35,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-15 19:11:35,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:35,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:35,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:35,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:35,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:11:35,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:35,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-15 19:11:36,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:11:36,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:36,061 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:11:36,061 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:11:36,061 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:11:36,061 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:11:36,062 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:11:36,062 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:36,062 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:11:36,062 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:11:36,062 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration1_Loop [2021-10-15 19:11:36,062 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:11:36,062 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:11:36,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:36,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:36,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:36,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:36,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:36,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:36,224 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:11:36,229 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:11:36,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:36,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:36,248 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 [2021-10-15 19:11:36,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:11:36,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:11:36,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:11:36,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:11:36,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:11:36,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:11:36,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:11:36,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-15 19:11:36,278 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:11:36,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:36,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:36,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:36,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:36,329 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 [2021-10-15 19:11:36,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:11:36,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:11:36,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:11:36,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:11:36,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:11:36,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:11:36,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:11:36,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-15 19:11:36,355 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:11:36,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:36,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:36,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:36,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:36,408 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 [2021-10-15 19:11:36,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:11:36,419 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:11:36,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:11:36,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:11:36,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:11:36,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:11:36,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:11:36,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-15 19:11:36,435 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:11:36,444 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:11:36,444 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 19:11:36,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:36,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:36,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:36,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-15 19:11:36,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:11:36,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:11:36,452 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:11:36,453 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y2) = 1*gcd_#in~y2 Supporting invariants [] [2021-10-15 19:11:36,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:36,500 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:11:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:36,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:11:36,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:36,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:11:36,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:11:36,764 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-15 19:11:36,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:36,927 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 71 states and 98 transitions. Complement of second has 18 states. [2021-10-15 19:11:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-15 19:11:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2021-10-15 19:11:36,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2021-10-15 19:11:36,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:36,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2021-10-15 19:11:36,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:36,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2021-10-15 19:11:36,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:36,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 98 transitions. [2021-10-15 19:11:36,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:11:36,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 28 states and 32 transitions. [2021-10-15 19:11:36,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-15 19:11:36,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-15 19:11:36,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2021-10-15 19:11:36,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:11:36,955 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-15 19:11:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2021-10-15 19:11:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-10-15 19:11:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-10-15 19:11:37,001 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-15 19:11:37,002 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-15 19:11:37,002 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-15 19:11:37,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2021-10-15 19:11:37,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:11:37,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:11:37,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:11:37,007 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-15 19:11:37,007 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 19:11:37,008 INFO L791 eck$LassoCheckResult]: Stem: 165#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 166#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 180#L32 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 181#L36 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 170#L39 call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 182#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 173#L18 [2021-10-15 19:11:37,008 INFO L793 eck$LassoCheckResult]: Loop: 173#L18 assume !(~y1 <= 0 || ~y2 <= 0); 174#L21 assume !(~y1 == ~y2); 178#L24 assume ~y1 > ~y2; 167#L25 call #t~ret7 := gcd(~y1 - ~y2, ~y2);< 169#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 173#L18 [2021-10-15 19:11:37,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1422073881, now seen corresponding path program 1 times [2021-10-15 19:11:37,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:37,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807542027] [2021-10-15 19:11:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:37,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:37,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:37,052 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:37,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:37,070 INFO L82 PathProgramCache]: Analyzing trace with hash 32573467, now seen corresponding path program 1 times [2021-10-15 19:11:37,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:37,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497051766] [2021-10-15 19:11:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:37,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:37,089 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:37,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:37,107 INFO L82 PathProgramCache]: Analyzing trace with hash -216647933, now seen corresponding path program 1 times [2021-10-15 19:11:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:37,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856502668] [2021-10-15 19:11:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:37,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:37,124 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:37,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:37,277 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:11:37,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:11:37,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:11:37,277 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:11:37,277 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:11:37,278 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:37,278 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:11:37,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:11:37,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration2_Loop [2021-10-15 19:11:37,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:11:37,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:11:37,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:37,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:37,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:37,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:37,361 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:11:37,361 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:11:37,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:37,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:37,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:11:37,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:37,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-15 19:11:37,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:37,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:37,453 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:37,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:11:37,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-15 19:11:40,009 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:11:40,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-15 19:11:40,013 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:11:40,013 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:11:40,013 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:11:40,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:11:40,013 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:11:40,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:40,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:11:40,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:11:40,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration2_Loop [2021-10-15 19:11:40,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:11:40,014 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:11:40,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,108 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:11:40,108 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:11:40,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:40,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:40,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:40,120 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 [2021-10-15 19:11:40,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:11:40,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:11:40,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:11:40,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:11:40,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:11:40,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:11:40,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:11:40,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-15 19:11:40,147 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:11:40,152 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:11:40,152 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 19:11:40,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:40,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:40,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:40,176 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:11:40,176 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:11:40,177 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:11:40,177 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y1) = 1*gcd_~y1 Supporting invariants [] [2021-10-15 19:11:40,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-15 19:11:40,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:40,215 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:11:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:40,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:11:40,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:40,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:11:40,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:11:40,410 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-15 19:11:40,411 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:40,448 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 54 states and 61 transitions. Complement of second has 15 states. [2021-10-15 19:11:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-15 19:11:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-15 19:11:40,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2021-10-15 19:11:40,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:40,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-15 19:11:40,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:40,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2021-10-15 19:11:40,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:40,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2021-10-15 19:11:40,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:11:40,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2021-10-15 19:11:40,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-15 19:11:40,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-15 19:11:40,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2021-10-15 19:11:40,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:11:40,455 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-15 19:11:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2021-10-15 19:11:40,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2021-10-15 19:11:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-15 19:11:40,459 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-15 19:11:40,459 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-15 19:11:40,459 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-15 19:11:40,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2021-10-15 19:11:40,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:11:40,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:11:40,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:11:40,461 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:11:40,461 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 19:11:40,461 INFO L791 eck$LassoCheckResult]: Stem: 305#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 306#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 321#L32 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 322#L36 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 316#L39 call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 324#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 325#L18 assume !(~y1 <= 0 || ~y2 <= 0); 323#L21 assume !(~y1 == ~y2); 320#L24 assume !(~y1 > ~y2); 308#L27 call #t~ret8 := gcd(~y1, ~y2 - ~y1);< 317#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 312#L18 [2021-10-15 19:11:40,461 INFO L793 eck$LassoCheckResult]: Loop: 312#L18 assume !(~y1 <= 0 || ~y2 <= 0); 313#L21 assume !(~y1 == ~y2); 319#L24 assume ~y1 > ~y2; 307#L25 call #t~ret7 := gcd(~y1 - ~y2, ~y2);< 309#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 312#L18 [2021-10-15 19:11:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash -216644988, now seen corresponding path program 2 times [2021-10-15 19:11:40,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:40,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169703950] [2021-10-15 19:11:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:40,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:40,477 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:40,533 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash 32573467, now seen corresponding path program 2 times [2021-10-15 19:11:40,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:40,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920468046] [2021-10-15 19:11:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:40,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:40,564 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:40,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:40,570 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:40,571 INFO L82 PathProgramCache]: Analyzing trace with hash 201252728, now seen corresponding path program 1 times [2021-10-15 19:11:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:40,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903313802] [2021-10-15 19:11:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:40,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:40,606 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:11:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:11:40,634 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:11:40,736 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:11:40,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:11:40,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:11:40,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:11:40,737 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:11:40,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:40,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:11:40,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:11:40,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration3_Loop [2021-10-15 19:11:40,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:11:40,738 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:11:40,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:40,809 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:11:40,809 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:11:40,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:40,810 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:40,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:11:40,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:40,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-15 19:11:40,844 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:11:40,845 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret7=0} Honda state: {gcd_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:11:40,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:40,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:40,886 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:40,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:11:40,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:40,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-15 19:11:41,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:41,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:41,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:41,011 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:41,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-15 19:11:41,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:11:41,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:11:43,643 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:11:43,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-10-15 19:11:43,647 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:11:43,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:11:43,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:11:43,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:11:43,648 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:11:43,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:43,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:11:43,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:11:43,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration3_Loop [2021-10-15 19:11:43,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:11:43,648 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:11:43,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:43,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:43,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:43,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:11:43,739 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:11:43,740 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:11:43,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:43,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:43,747 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 [2021-10-15 19:11:43,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-15 19:11:43,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:11:43,760 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:11:43,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:11:43,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:11:43,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:11:43,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:11:43,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:11:43,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:11:43,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:43,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:43,822 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:43,832 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 [2021-10-15 19:11:43,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:11:43,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:11:43,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:11:43,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:11:43,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:11:43,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-15 19:11:43,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:11:43,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:11:43,864 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:11:43,867 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-15 19:11:43,867 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 19:11:43,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:11:43,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:43,868 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:43,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-15 19:11:43,872 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:11:43,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:11:43,873 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:11:43,873 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y1) = 1*gcd_~y1 Supporting invariants [] [2021-10-15 19:11:43,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:43,898 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:11:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:43,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:11:43,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:44,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:11:44,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:11:44,117 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-15 19:11:44,117 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:44,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 51 transitions. Complement of second has 15 states. [2021-10-15 19:11:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-15 19:11:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-15 19:11:44,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-15 19:11:44,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:44,161 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:11:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:44,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:11:44,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:44,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:11:44,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:44,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:11:44,409 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-15 19:11:44,410 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:44,437 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 51 transitions. Complement of second has 15 states. [2021-10-15 19:11:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-15 19:11:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-15 19:11:44,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-15 19:11:44,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:44,440 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:11:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:44,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:11:44,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:44,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:11:44,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:11:44,594 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-15 19:11:44,595 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:44,630 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 75 states and 86 transitions. Complement of second has 17 states. [2021-10-15 19:11:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-15 19:11:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-10-15 19:11:44,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-15 19:11:44,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:44,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2021-10-15 19:11:44,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:44,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2021-10-15 19:11:44,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:11:44,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2021-10-15 19:11:44,637 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 19:11:44,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2021-10-15 19:11:44,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-15 19:11:44,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-15 19:11:44,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-15 19:11:44,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:44,637 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:11:44,637 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:11:44,638 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:11:44,638 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-15 19:11:44,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-15 19:11:44,638 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 19:11:44,638 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-15 19:11:44,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 07:11:44 BoogieIcfgContainer [2021-10-15 19:11:44,644 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 19:11:44,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:11:44,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:11:44,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:11:44,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:11:34" (3/4) ... [2021-10-15 19:11:44,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:11:44,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:11:44,651 INFO L168 Benchmark]: Toolchain (without parser) took 10787.31 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 59.2 MB in the end (delta: -4.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:44,651 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 61.7 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:11:44,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.44 ms. Allocated memory is still 88.1 MB. Free memory was 55.0 MB in the beginning and 66.2 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:44,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 88.1 MB. Free memory was 66.2 MB in the beginning and 64.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:44,653 INFO L168 Benchmark]: Boogie Preprocessor took 22.16 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 63.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:11:44,654 INFO L168 Benchmark]: RCFGBuilder took 419.77 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 54.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:44,655 INFO L168 Benchmark]: BuchiAutomizer took 9953.09 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 59.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:44,655 INFO L168 Benchmark]: Witness Printer took 4.03 ms. Allocated memory is still 107.0 MB. Free memory was 59.9 MB in the beginning and 59.2 MB in the end (delta: 741.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:44,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 61.7 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.44 ms. Allocated memory is still 88.1 MB. Free memory was 55.0 MB in the beginning and 66.2 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 88.1 MB. Free memory was 66.2 MB in the beginning and 64.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.16 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 63.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 419.77 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 54.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9953.09 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 59.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.03 ms. Allocated memory is still 107.0 MB. Free memory was 59.9 MB in the beginning and 59.2 MB in the end (delta: 741.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y2) and consists of 6 locations. One deterministic module has affine ranking function y1 and consists of 5 locations. One nondeterministic module has affine ranking function y1 and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 8.3s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 19.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 52 SDtfs, 71 SDslu, 6 SDs, 0 SdLazy, 131 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.5ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf91 smp92 dnf100 smp100 tf106 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-15 19:11:44,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ef5115-8631-425d-9a50-6fc8d5843b24/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...