./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD --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 ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:12:29,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:12:29,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:12:29,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:12:29,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:12:29,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:12:29,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:12:29,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:12:29,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:12:29,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:12:29,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:12:29,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:12:29,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:12:29,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:12:29,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:12:29,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:12:29,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:12:29,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:12:29,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:12:29,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:12:29,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:12:29,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:12:29,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:12:29,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:12:29,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:12:29,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:12:29,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:12:29,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:12:29,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:12:29,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:12:29,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:12:29,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:12:29,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:12:29,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:12:29,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:12:29,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:12:29,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:12:29,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:12:29,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:12:29,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:12:29,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:12:29,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:12:29,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:12:29,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:12:29,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:12:29,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:12:29,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:12:29,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:12:29,282 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:12:29,282 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:12:29,283 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:12:29,283 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:12:29,283 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:12:29,283 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:12:29,283 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:12:29,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:12:29,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:12:29,284 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:12:29,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:12:29,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:12:29,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:12:29,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:12:29,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:12:29,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:12:29,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:12:29,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:12:29,285 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:12:29,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:12:29,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:12:29,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:12:29,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:12:29,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:12:29,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:12:29,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:12:29,290 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:12:29,291 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_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 [2021-10-28 23:12:29,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:12:29,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:12:29,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:12:29,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:12:29,612 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:12:29,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/recursive/gcd01-1.c [2021-10-28 23:12:29,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/data/d8ad8502b/e03550f7ea924f20af6b8509936ebcc7/FLAG779f62f5b [2021-10-28 23:12:30,204 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:12:30,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/sv-benchmarks/c/recursive/gcd01-1.c [2021-10-28 23:12:30,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/data/d8ad8502b/e03550f7ea924f20af6b8509936ebcc7/FLAG779f62f5b [2021-10-28 23:12:30,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/data/d8ad8502b/e03550f7ea924f20af6b8509936ebcc7 [2021-10-28 23:12:30,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:12:30,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:12:30,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:12:30,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:12:30,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:12:30,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f564d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30, skipping insertion in model container [2021-10-28 23:12:30,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:12:30,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:12:30,793 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_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-10-28 23:12:30,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:12:30,818 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:12:30,832 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_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-10-28 23:12:30,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:12:30,847 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:12:30,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30 WrapperNode [2021-10-28 23:12:30,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:12:30,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:12:30,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:12:30,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:12:30,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:12:30,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:12:30,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:12:30,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:12:30,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:12:30,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:12:30,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:12:30,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:12:30,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (1/1) ... [2021-10-28 23:12:30,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:30,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:30,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:30,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:12:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-10-28 23:12:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-10-28 23:12:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:12:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:12:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:12:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:12:31,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:12:31,294 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:12:31,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:31 BoogieIcfgContainer [2021-10-28 23:12:31,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:12:31,298 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:12:31,299 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:12:31,302 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:12:31,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:12:31,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:12:30" (1/3) ... [2021-10-28 23:12:31,306 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fd99763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:12:31, skipping insertion in model container [2021-10-28 23:12:31,306 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:12:31,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:30" (2/3) ... [2021-10-28 23:12:31,307 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fd99763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:12:31, skipping insertion in model container [2021-10-28 23:12:31,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:12:31,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:31" (3/3) ... [2021-10-28 23:12:31,309 INFO L389 chiAutomizerObserver]: Analyzing ICFG gcd01-1.c [2021-10-28 23:12:31,371 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:12:31,372 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:12:31,372 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:12:31,372 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:12:31,372 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:12:31,372 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:12:31,372 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:12:31,373 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:12:31,394 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) [2021-10-28 23:12:31,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 23:12:31,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:31,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:31,430 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:12:31,430 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:12:31,430 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:12:31,431 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) [2021-10-28 23:12:31,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 23:12:31,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:31,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:31,439 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:12:31,439 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:12:31,446 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 [2021-10-28 23:12:31,447 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 [2021-10-28 23:12:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash 45873351, now seen corresponding path program 1 times [2021-10-28 23:12:31,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:31,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673964114] [2021-10-28 23:12:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:31,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:31,594 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:31,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 28756482, now seen corresponding path program 1 times [2021-10-28 23:12:31,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:31,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228192518] [2021-10-28 23:12:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:31,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:31,685 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:31,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash -6988548, now seen corresponding path program 1 times [2021-10-28 23:12:31,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:31,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882433481] [2021-10-28 23:12:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:31,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:31,729 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:31,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:32,016 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:32,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:32,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:32,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:32,018 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:12:32,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:32,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:32,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration1_Loop [2021-10-28 23:12:32,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:32,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:32,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:32,165 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:12:32,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:32,180 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:32,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:12:32,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:32,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:12:32,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:32,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:32,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:32,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:12:32,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:32,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:12:32,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:32,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:12:32,452 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:12:32,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:32,461 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:32,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:32,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:32,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:32,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:12:32,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:32,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:32,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration1_Loop [2021-10-28 23:12:32,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:32,462 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:32,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:32,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:32,590 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:12:32,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,600 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 [2021-10-28 23:12:32,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:32,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:32,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:32,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:32,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:32,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:32,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:32,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:12:32,628 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:32,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:32,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,674 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 [2021-10-28 23:12:32,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:32,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:32,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:32,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:32,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:32,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:32,686 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:32,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:12:32,720 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:32,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:32,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,765 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 [2021-10-28 23:12:32,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:32,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:12:32,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:32,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:32,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:32,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:32,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:32,800 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:12:32,805 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:12:32,805 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:12:32,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:32,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:32,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:32,825 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:12:32,826 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:12:32,826 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:12:32,826 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y2) = 1*gcd_#in~y2 Supporting invariants [] [2021-10-28 23:12:32,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:12:32,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:32,869 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:12:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:32,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:32,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:32,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:12:32,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:33,113 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 [2021-10-28 23:12:33,115 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) [2021-10-28 23:12:33,282 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. [2021-10-28 23:12:33,283 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 [2021-10-28 23:12:33,285 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) [2021-10-28 23:12:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2021-10-28 23:12:33,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2021-10-28 23:12:33,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:33,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2021-10-28 23:12:33,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:33,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2021-10-28 23:12:33,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:33,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 98 transitions. [2021-10-28 23:12:33,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:12:33,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 28 states and 32 transitions. [2021-10-28 23:12:33,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 23:12:33,307 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 23:12:33,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2021-10-28 23:12:33,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:12:33,308 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-28 23:12:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2021-10-28 23:12:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-10-28 23:12:33,327 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) [2021-10-28 23:12:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-10-28 23:12:33,328 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-28 23:12:33,328 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-28 23:12:33,329 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:12:33,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2021-10-28 23:12:33,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:12:33,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:33,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:33,330 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:12:33,330 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:12:33,331 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 [2021-10-28 23:12:33,331 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 [2021-10-28 23:12:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1422073881, now seen corresponding path program 1 times [2021-10-28 23:12:33,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:33,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174117328] [2021-10-28 23:12:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:33,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:33,348 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:33,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 32573467, now seen corresponding path program 1 times [2021-10-28 23:12:33,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:33,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300400951] [2021-10-28 23:12:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:33,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:33,393 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:33,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -216647933, now seen corresponding path program 1 times [2021-10-28 23:12:33,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:33,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205164609] [2021-10-28 23:12:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:33,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:33,431 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:33,467 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:33,580 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:33,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:33,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:33,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:33,580 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:12:33,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:33,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:33,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:33,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration2_Loop [2021-10-28 23:12:33,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:33,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:33,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:33,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:33,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:33,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:33,659 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:33,659 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:12:33,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:33,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:33,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:33,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:33,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:12:33,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:33,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:33,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:33,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:12:33,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:33,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:12:36,018 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:12:36,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:36,025 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:36,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:36,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:36,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:36,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:12:36,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,025 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:36,025 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:36,025 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration2_Loop [2021-10-28 23:12:36,025 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:36,026 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:36,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,098 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:36,099 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:12:36,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:36,100 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:36,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:12:36,106 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 [2021-10-28 23:12:36,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:36,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:36,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:36,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:36,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:36,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:36,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:36,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:12:36,149 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:12:36,149 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:12:36,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:36,156 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:36,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:12:36,166 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:12:36,166 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:12:36,166 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y1) = 1*gcd_~y1 Supporting invariants [] [2021-10-28 23:12:36,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:12:36,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:36,201 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:12:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:36,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:36,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:12:36,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:36,357 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 [2021-10-28 23:12:36,357 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) [2021-10-28 23:12:36,394 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. [2021-10-28 23:12:36,396 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 [2021-10-28 23:12:36,397 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) [2021-10-28 23:12:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-28 23:12:36,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2021-10-28 23:12:36,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:36,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-28 23:12:36,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:36,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2021-10-28 23:12:36,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:36,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2021-10-28 23:12:36,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:12:36,409 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2021-10-28 23:12:36,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:12:36,411 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:12:36,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2021-10-28 23:12:36,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:12:36,412 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 23:12:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2021-10-28 23:12:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2021-10-28 23:12:36,417 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) [2021-10-28 23:12:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-28 23:12:36,422 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-28 23:12:36,422 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-28 23:12:36,422 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:12:36,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2021-10-28 23:12:36,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:12:36,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:36,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:36,429 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:36,429 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:12:36,429 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 [2021-10-28 23:12:36,430 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 [2021-10-28 23:12:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash -216644988, now seen corresponding path program 2 times [2021-10-28 23:12:36,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:36,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324062367] [2021-10-28 23:12:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:36,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:36,459 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:36,489 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:36,492 INFO L85 PathProgramCache]: Analyzing trace with hash 32573467, now seen corresponding path program 2 times [2021-10-28 23:12:36,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:36,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380638349] [2021-10-28 23:12:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:36,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:36,505 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:36,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash 201252728, now seen corresponding path program 1 times [2021-10-28 23:12:36,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:36,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687444847] [2021-10-28 23:12:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:36,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:36,529 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:36,548 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:36,684 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:36,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:36,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:36,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:36,685 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:12:36,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:36,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:36,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration3_Loop [2021-10-28 23:12:36,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:36,686 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:36,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:36,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:36,772 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:36,773 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:12:36,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:36,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:36,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:36,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:12:36,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:36,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:36,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:36,805 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret7=0} Honda state: {gcd_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:12:36,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:36,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:36,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:36,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:12:36,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:36,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:36,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-10-28 23:12:36,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:36,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:36,872 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:36,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:12:36,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:12:36,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:39,114 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:12:39,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:39,119 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:39,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:39,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:39,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:39,120 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:12:39,120 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:39,120 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:39,120 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:39,120 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration3_Loop [2021-10-28 23:12:39,120 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:39,120 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:39,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:39,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:39,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:39,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:39,184 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:39,185 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:12:39,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:39,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:39,186 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:39,197 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:39,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:39,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:39,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:39,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:39,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:39,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:39,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:39,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:12:39,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:39,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:39,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:39,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:39,300 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:39,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:12:39,361 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 [2021-10-28 23:12:39,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:39,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:39,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:39,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:39,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:39,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:39,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:39,386 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:12:39,391 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:12:39,391 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:12:39,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:39,392 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:39,398 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:12:39,398 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:12:39,398 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:12:39,398 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y1) = 1*gcd_~y1 Supporting invariants [] [2021-10-28 23:12:39,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:12:39,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:39,426 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:12:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:39,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:12:39,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:39,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:12:39,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:39,594 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 [2021-10-28 23:12:39,595 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) [2021-10-28 23:12:39,623 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. [2021-10-28 23:12:39,624 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 [2021-10-28 23:12:39,625 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) [2021-10-28 23:12:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-28 23:12:39,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-28 23:12:39,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:39,626 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:12:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:39,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:12:39,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:39,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:12:39,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:39,819 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 [2021-10-28 23:12:39,819 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) [2021-10-28 23:12:39,858 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. [2021-10-28 23:12:39,859 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 [2021-10-28 23:12:39,859 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) [2021-10-28 23:12:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-10-28 23:12:39,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-28 23:12:39,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:39,860 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:12:39,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:39,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:12:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:39,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:12:39,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:40,022 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 [2021-10-28 23:12:40,022 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) [2021-10-28 23:12:40,063 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. [2021-10-28 23:12:40,064 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 [2021-10-28 23:12:40,064 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) [2021-10-28 23:12:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-10-28 23:12:40,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-28 23:12:40,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:40,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2021-10-28 23:12:40,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:40,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2021-10-28 23:12:40,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:40,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2021-10-28 23:12:40,081 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:12:40,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2021-10-28 23:12:40,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:12:40,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:12:40,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:12:40,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:12:40,082 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:40,082 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:40,082 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:40,083 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:12:40,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:12:40,083 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:12:40,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:12:40,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:12:40 BoogieIcfgContainer [2021-10-28 23:12:40,087 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:12:40,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:12:40,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:12:40,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:12:40,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:31" (3/4) ... [2021-10-28 23:12:40,090 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:12:40,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:12:40,092 INFO L168 Benchmark]: Toolchain (without parser) took 9529.10 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 72.7 MB in the beginning and 56.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:40,092 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 115.3 MB. Free memory was 88.8 MB in the beginning and 88.7 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:40,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.78 ms. Allocated memory is still 115.3 MB. Free memory was 72.5 MB in the beginning and 89.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:40,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 87.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:40,094 INFO L168 Benchmark]: Boogie Preprocessor took 19.41 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 86.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:40,095 INFO L168 Benchmark]: RCFGBuilder took 394.61 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 77.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:40,095 INFO L168 Benchmark]: BuchiAutomizer took 8789.18 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 56.0 MB in the end (delta: 20.8 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:40,096 INFO L168 Benchmark]: Witness Printer took 3.06 ms. Allocated memory is still 138.4 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:40,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 115.3 MB. Free memory was 88.8 MB in the beginning and 88.7 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.78 ms. Allocated memory is still 115.3 MB. Free memory was 72.5 MB in the beginning and 89.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 87.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.41 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 86.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 394.61 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 77.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8789.18 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 56.0 MB in the end (delta: 20.8 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.06 ms. Allocated memory is still 138.4 MB. Free memory is still 56.0 MB. There was no memory consumed. 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 8.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 7.3s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s 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, 0.1s 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: 37ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:12:40,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:40,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c93d7b-7551-48b3-b1a4-2f95f965dcf8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...