./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:24:24,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:24:24,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:24:24,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:24:24,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:24:24,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:24:24,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:24:24,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:24:24,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:24:24,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:24:24,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:24:24,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:24:24,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:24:24,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:24:24,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:24:24,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:24:24,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:24:24,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:24:24,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:24:24,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:24:24,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:24:24,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:24:24,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:24:24,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:24:24,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:24:24,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:24:24,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:24:24,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:24:24,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:24:24,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:24:24,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:24:24,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:24:24,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:24:24,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:24:24,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:24:24,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:24:24,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:24:24,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:24:24,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:24:24,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:24:24,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:24:24,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 22:24:24,369 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:24:24,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:24:24,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:24:24,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:24:24,371 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:24:24,372 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 22:24:24,372 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 22:24:24,372 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 22:24:24,372 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 22:24:24,373 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 22:24:24,373 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 22:24:24,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:24:24,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:24:24,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:24:24,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:24:24,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 22:24:24,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 22:24:24,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 22:24:24,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:24:24,375 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 22:24:24,376 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:24:24,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 22:24:24,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:24:24,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:24:24,377 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 22:24:24,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:24:24,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:24:24,378 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 22:24:24,380 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 22:24:24,381 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 [2019-11-15 22:24:24,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:24:24,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:24:24,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:24:24,447 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:24:24,448 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:24:24,448 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD4.c [2019-11-15 22:24:24,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/data/5c859be82/097c3ca4b1334438a7e95deffde4080d/FLAG352a23a53 [2019-11-15 22:24:24,890 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:24:24,890 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/sv-benchmarks/c/termination-restricted-15/GCD4.c [2019-11-15 22:24:24,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/data/5c859be82/097c3ca4b1334438a7e95deffde4080d/FLAG352a23a53 [2019-11-15 22:24:24,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/data/5c859be82/097c3ca4b1334438a7e95deffde4080d [2019-11-15 22:24:24,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:24:24,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:24:24,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:24:24,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:24:24,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:24:24,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:24:24" (1/1) ... [2019-11-15 22:24:24,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b82092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:24, skipping insertion in model container [2019-11-15 22:24:24,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:24:24" (1/1) ... [2019-11-15 22:24:24,922 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:24:24,936 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:24:25,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:24:25,136 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:24:25,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:24:25,160 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:24:25,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25 WrapperNode [2019-11-15 22:24:25,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:24:25,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:24:25,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:24:25,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:24:25,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:24:25,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:24:25,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:24:25,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:24:25,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... [2019-11-15 22:24:25,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:24:25,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:24:25,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:24:25,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:24:25,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:24:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:24:25,399 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:24:25,399 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 22:24:25,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:24:25 BoogieIcfgContainer [2019-11-15 22:24:25,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:24:25,401 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 22:24:25,401 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 22:24:25,405 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 22:24:25,405 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:24:25,406 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 10:24:24" (1/3) ... [2019-11-15 22:24:25,407 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f28ab8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:24:25, skipping insertion in model container [2019-11-15 22:24:25,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:24:25,407 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:24:25" (2/3) ... [2019-11-15 22:24:25,407 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f28ab8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:24:25, skipping insertion in model container [2019-11-15 22:24:25,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:24:25,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:24:25" (3/3) ... [2019-11-15 22:24:25,409 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD4.c [2019-11-15 22:24:25,466 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 22:24:25,466 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 22:24:25,467 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 22:24:25,467 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:24:25,467 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:24:25,467 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 22:24:25,467 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:24:25,467 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 22:24:25,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 22:24:25,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 22:24:25,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:24:25,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:24:25,503 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 22:24:25,503 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 22:24:25,503 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 22:24:25,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 22:24:25,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 22:24:25,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:24:25,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:24:25,505 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 22:24:25,505 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 22:24:25,511 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2019-11-15 22:24:25,512 INFO L793 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17-2true assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 9#L17-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 6#L13-2true [2019-11-15 22:24:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 22:24:25,524 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:25,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402975196] [2019-11-15 22:24:25,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:25,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:25,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:25,605 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-15 22:24:25,607 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:25,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82318645] [2019-11-15 22:24:25,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:25,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:25,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:25,625 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:25,627 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-15 22:24:25,627 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:25,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383937690] [2019-11-15 22:24:25,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:25,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:25,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:25,642 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:25,773 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:25,773 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:25,774 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:25,774 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:25,774 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:24:25,774 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:25,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:25,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:25,774 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2019-11-15 22:24:25,774 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:25,775 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:25,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:25,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:25,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:26,014 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:26,014 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:24:26,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:26,021 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:26,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:24:26,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:27,035 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:24:27,037 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:27,038 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:27,038 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:27,038 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:27,038 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:24:27,038 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,038 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:27,038 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:27,038 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2019-11-15 22:24:27,038 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:27,038 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:27,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,170 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:27,174 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:24:27,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:27,177 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:27,178 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:27,178 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:27,178 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:27,182 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:24:27,182 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:24:27,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:24:27,207 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:27,208 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:27,208 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:24:27,209 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:27,209 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:27,209 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:27,211 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:24:27,211 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:24:27,241 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:24:27,266 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:24:27,266 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:24:27,268 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:24:27,268 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:24:27,268 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:24:27,269 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 22:24:27,271 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:24:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:27,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:27,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:27,318 WARN L254 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 22:24:27,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:27,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:24:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:24:27,379 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 [2019-11-15 22:24:27,380 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-11-15 22:24:27,468 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 10 states. [2019-11-15 22:24:27,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 22:24:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2019-11-15 22:24:27,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-15 22:24:27,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:27,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 22:24:27,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:27,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-15 22:24:27,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:27,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2019-11-15 22:24:27,477 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-15 22:24:27,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 11 states and 16 transitions. [2019-11-15 22:24:27,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 22:24:27,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 22:24:27,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-15 22:24:27,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:24:27,484 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 22:24:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-15 22:24:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-15 22:24:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 22:24:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2019-11-15 22:24:27,506 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-15 22:24:27,506 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-15 22:24:27,506 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 22:24:27,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2019-11-15 22:24:27,507 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-15 22:24:27,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:24:27,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:24:27,508 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 22:24:27,508 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 22:24:27,508 INFO L791 eck$LassoCheckResult]: Stem: 90#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 91#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 86#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 87#L17-2 [2019-11-15 22:24:27,508 INFO L793 eck$LassoCheckResult]: Loop: 87#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 87#L17-2 [2019-11-15 22:24:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-15 22:24:27,509 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:27,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057674384] [2019-11-15 22:24:27,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,522 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-15 22:24:27,523 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:27,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230913685] [2019-11-15 22:24:27,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,529 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-11-15 22:24:27,530 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:27,530 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955331136] [2019-11-15 22:24:27,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,542 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:27,566 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:27,566 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:27,566 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:27,566 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:27,566 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:24:27,566 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,566 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:27,566 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:27,567 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2019-11-15 22:24:27,567 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:27,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:27,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,621 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:27,622 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:27,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:27,642 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:24:27,642 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:27,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:27,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:24:27,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:27,670 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:24:27,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:24:27,697 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,809 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:24:27,812 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:27,812 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:27,812 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:27,812 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:27,812 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:24:27,812 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:27,812 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:27,812 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:27,813 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2019-11-15 22:24:27,813 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:27,813 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:27,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:27,883 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:27,884 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:24:27,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:27,885 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:27,885 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:27,885 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:27,885 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:27,887 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:24:27,887 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:24:27,891 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:24:27,892 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:27,892 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:27,892 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:27,893 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:27,893 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:27,895 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:24:27,895 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:24:27,899 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:24:27,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:27,901 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:27,901 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:24:27,901 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:27,901 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:27,901 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:27,902 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:24:27,902 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:24:27,907 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:24:27,911 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:24:27,911 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:24:27,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:24:27,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:24:27,912 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:24:27,912 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-15 22:24:27,912 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:24:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:27,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:27,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:27,941 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 22:24:27,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:24:27,942 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-15 22:24:27,942 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 8 Second operand 2 states. [2019-11-15 22:24:27,954 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 15 states and 22 transitions. Complement of second has 5 states. [2019-11-15 22:24:27,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 22:24:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-15 22:24:27,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-15 22:24:27,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:27,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-15 22:24:27,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:27,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 22:24:27,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:27,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2019-11-15 22:24:27,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 22:24:27,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-15 22:24:27,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 22:24:27,959 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-15 22:24:27,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-15 22:24:27,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:24:27,960 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-15 22:24:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-15 22:24:27,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-11-15 22:24:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 22:24:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2019-11-15 22:24:27,962 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2019-11-15 22:24:27,962 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2019-11-15 22:24:27,962 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 22:24:27,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 17 transitions. [2019-11-15 22:24:27,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 22:24:27,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:24:27,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:24:27,965 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 22:24:27,965 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 22:24:27,965 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 147#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 150#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 153#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 144#L17-3 [2019-11-15 22:24:27,965 INFO L793 eck$LassoCheckResult]: Loop: 144#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 148#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 143#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 144#L17-3 [2019-11-15 22:24:27,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2019-11-15 22:24:27,966 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:27,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462820879] [2019-11-15 22:24:27,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,976 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash 52221, now seen corresponding path program 2 times [2019-11-15 22:24:27,977 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:27,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28066820] [2019-11-15 22:24:27,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,978 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:27,985 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285994, now seen corresponding path program 1 times [2019-11-15 22:24:27,986 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:27,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831382290] [2019-11-15 22:24:27,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:27,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:24:28,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831382290] [2019-11-15 22:24:28,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146758093] [2019-11-15 22:24:28,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:24:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:28,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:24:28,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:28,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:24:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:24:28,159 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:24:28,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 22:24:28,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241429453] [2019-11-15 22:24:28,206 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:28,207 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:28,207 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:28,207 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:28,207 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:24:28,207 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:28,207 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:28,207 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:28,208 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2019-11-15 22:24:28,208 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:28,208 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:28,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:28,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:28,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:28,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:28,299 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:24:28,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:28,314 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:24:28,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:24:28,340 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,083 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:24:33,086 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:33,086 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:33,086 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:33,087 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:33,087 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:24:33,087 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,087 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:33,088 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:33,088 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2019-11-15 22:24:33,088 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:33,088 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:33,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:33,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:33,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:33,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:33,207 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:24:33,207 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:33,208 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:33,208 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:33,208 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:33,209 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:33,210 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:24:33,210 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:24:33,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:24:33,215 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:33,215 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:33,215 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:24:33,216 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:33,216 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:33,216 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:33,217 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:24:33,217 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:24:33,224 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:24:33,229 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:24:33,230 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:24:33,230 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:24:33,230 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:24:33,230 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:24:33,231 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-15 22:24:33,231 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:24:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:33,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:33,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:33,274 WARN L254 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 22:24:33,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:24:33,307 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 [2019-11-15 22:24:33,307 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 17 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-15 22:24:33,348 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 17 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 33 states and 52 transitions. Complement of second has 10 states. [2019-11-15 22:24:33,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 22:24:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2019-11-15 22:24:33,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 22:24:33,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:33,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-15 22:24:33,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:33,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-15 22:24:33,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:33,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 52 transitions. [2019-11-15 22:24:33,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-15 22:24:33,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 24 states and 35 transitions. [2019-11-15 22:24:33,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-15 22:24:33,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-15 22:24:33,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-11-15 22:24:33,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:24:33,354 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-15 22:24:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-11-15 22:24:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-15 22:24:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 22:24:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2019-11-15 22:24:33,359 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-11-15 22:24:33,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:24:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 22:24:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:24:33,364 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 9 states. [2019-11-15 22:24:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:24:33,506 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2019-11-15 22:24:33,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:24:33,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-15 22:24:33,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-15 22:24:33,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 26 transitions. [2019-11-15 22:24:33,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-15 22:24:33,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-15 22:24:33,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2019-11-15 22:24:33,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:24:33,510 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2019-11-15 22:24:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2019-11-15 22:24:33,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2019-11-15 22:24:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 22:24:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-15 22:24:33,513 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-15 22:24:33,513 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-15 22:24:33,513 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 22:24:33,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-15 22:24:33,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 22:24:33,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:24:33,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:24:33,514 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 22:24:33,514 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-15 22:24:33,514 INFO L791 eck$LassoCheckResult]: Stem: 322#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 323#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 326#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 325#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 321#L17-3 [2019-11-15 22:24:33,514 INFO L793 eck$LassoCheckResult]: Loop: 321#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 324#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 318#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 319#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 321#L17-3 [2019-11-15 22:24:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:33,515 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 2 times [2019-11-15 22:24:33,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:33,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939482912] [2019-11-15 22:24:33,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:33,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:33,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:33,534 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:33,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1618930, now seen corresponding path program 1 times [2019-11-15 22:24:33,535 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:33,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830147541] [2019-11-15 22:24:33,536 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:33,536 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:33,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:33,544 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:33,544 INFO L82 PathProgramCache]: Analyzing trace with hash 780807225, now seen corresponding path program 2 times [2019-11-15 22:24:33,545 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:33,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428073561] [2019-11-15 22:24:33,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:33,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:33,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:33,573 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:33,651 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:33,651 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:33,651 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:33,652 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:33,652 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:24:33,652 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,652 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:33,652 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:33,652 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2019-11-15 22:24:33,652 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:33,652 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:33,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:33,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:33,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:33,751 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:33,751 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:24:33,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:33,760 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:24:33,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 22:24:33,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:33,776 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:24:33,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:33,798 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:33,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:24:33,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:45,857 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-15 22:24:45,860 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:45,860 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:45,860 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:45,860 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:45,860 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:24:45,860 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:45,860 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:45,861 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:45,861 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2019-11-15 22:24:45,861 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:45,861 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:45,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:45,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:45,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:45,966 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:45,966 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:24:45,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:45,968 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:45,968 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:24:45,968 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:45,968 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:45,968 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:45,969 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:24:45,969 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:24:45,975 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:24:45,978 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:24:45,979 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:24:45,979 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:24:45,979 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:24:45,979 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:24:45,979 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-15 22:24:45,980 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:24:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:24:46,031 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 [2019-11-15 22:24:46,031 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-15 22:24:46,061 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 23 states and 32 transitions. Complement of second has 6 states. [2019-11-15 22:24:46,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 22:24:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-15 22:24:46,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-15 22:24:46,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-15 22:24:46,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-15 22:24:46,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2019-11-15 22:24:46,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 22:24:46,067 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 27 transitions. [2019-11-15 22:24:46,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-15 22:24:46,067 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-15 22:24:46,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 27 transitions. [2019-11-15 22:24:46,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 22:24:46,068 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-15 22:24:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 27 transitions. [2019-11-15 22:24:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2019-11-15 22:24:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 22:24:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-15 22:24:46,069 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-15 22:24:46,070 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-15 22:24:46,070 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 22:24:46,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-15 22:24:46,070 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 22:24:46,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:24:46,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:24:46,071 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-11-15 22:24:46,071 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 22:24:46,071 INFO L791 eck$LassoCheckResult]: Stem: 405#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 406#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 415#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 412#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 411#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 407#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 402#L17-2 [2019-11-15 22:24:46,071 INFO L793 eck$LassoCheckResult]: Loop: 402#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 402#L17-2 [2019-11-15 22:24:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,071 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 3 times [2019-11-15 22:24:46,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:46,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276727280] [2019-11-15 22:24:46,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:46,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:46,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:46,082 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-15 22:24:46,082 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:46,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953154160] [2019-11-15 22:24:46,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:46,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:46,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:46,086 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:46,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 4 times [2019-11-15 22:24:46,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:24:46,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604696466] [2019-11-15 22:24:46,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:46,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:24:46,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:24:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:24:46,098 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:24:46,125 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:46,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:46,125 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:46,125 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:46,125 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 22:24:46,125 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:46,125 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:46,125 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:46,125 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2019-11-15 22:24:46,125 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:46,125 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:46,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:46,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:46,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:46,175 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:46,175 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:46,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:46,180 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:46,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:24:46,184 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:46,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:46,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:46,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 22:24:46,191 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:46,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 22:24:46,201 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e129daff-d988-44f4-a2c2-373d683c4057/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:46,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 22:24:46,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 22:24:46,324 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 22:24:46,326 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:24:46,326 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:24:46,326 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:24:46,326 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:24:46,326 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:24:46,326 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:24:46,326 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:24:46,326 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:24:46,326 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2019-11-15 22:24:46,326 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:24:46,327 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:24:46,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:46,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:46,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:24:46,368 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:24:46,368 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:24:46,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:46,369 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:46,369 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:46,369 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:46,369 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:46,370 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:24:46,370 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:24:46,373 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:24:46,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:46,374 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:46,374 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:46,374 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:46,374 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:46,375 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:24:46,375 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:24:46,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:24:46,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:24:46,378 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:24:46,378 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:24:46,378 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:24:46,378 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:24:46,378 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:24:46,378 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:24:46,379 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:24:46,381 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:24:46,383 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:24:46,383 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:24:46,383 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:24:46,383 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 22:24:46,383 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:24:46,383 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-15 22:24:46,384 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 22:24:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,411 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:24:46,412 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-15 22:24:46,412 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2019-11-15 22:24:46,427 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2019-11-15 22:24:46,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 22:24:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 22:24:46,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-15 22:24:46,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,428 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 22:24:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,449 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:24:46,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-15 22:24:46,450 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2019-11-15 22:24:46,461 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2019-11-15 22:24:46,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 22:24:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 22:24:46,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-15 22:24:46,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,462 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 22:24:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:24:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:24:46,485 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 22:24:46,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:24:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:24:46,485 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 1 loop predicates [2019-11-15 22:24:46,486 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2019-11-15 22:24:46,500 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 22 states and 30 transitions. Complement of second has 4 states. [2019-11-15 22:24:46,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 22:24:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-15 22:24:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 22:24:46,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-15 22:24:46,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-15 22:24:46,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 22:24:46,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:24:46,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-11-15 22:24:46,503 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:24:46,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-15 22:24:46,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 22:24:46,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 22:24:46,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 22:24:46,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 22:24:46,504 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:24:46,504 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:24:46,504 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:24:46,504 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-15 22:24:46,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:24:46,505 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:24:46,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 22:24:46,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 10:24:46 BoogieIcfgContainer [2019-11-15 22:24:46,510 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 22:24:46,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:24:46,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:24:46,511 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:24:46,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:24:25" (3/4) ... [2019-11-15 22:24:46,514 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 22:24:46,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:24:46,518 INFO L168 Benchmark]: Toolchain (without parser) took 21608.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.3 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:24:46,518 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:24:46,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:24:46,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:24:46,527 INFO L168 Benchmark]: Boogie Preprocessor took 17.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:24:46,528 INFO L168 Benchmark]: RCFGBuilder took 193.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:24:46,529 INFO L168 Benchmark]: BuchiAutomizer took 21109.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -984.3 kB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:24:46,529 INFO L168 Benchmark]: Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:24:46,538 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 21109.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -984.3 kB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 21.0s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 20.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 33 SDtfs, 45 SDslu, 9 SDs, 0 SdLazy, 102 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf95 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf108 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 18.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...