./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/gcd01-2.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/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/gcd01-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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 60bddbffe1e2002d3081296e00d2a4e7e030158e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:18,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:18,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:18,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:18,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:18,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:18,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:18,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:18,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:18,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:18,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:18,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:18,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:18,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:18,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:18,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:18,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:18,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:18,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:18,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:18,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:18,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:18,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:18,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:18,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:18,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:18,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:18,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:18,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:18,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:18,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:18,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:18,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:18,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:18,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:18,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:18,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:18,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:18,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:18,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:18,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:18,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:56:18,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:18,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:18,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:18,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:18,462 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:18,462 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:18,462 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:18,463 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:18,463 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:18,463 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:18,463 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:18,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:18,463 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:18,464 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:18,465 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:18,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:18,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:18,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:18,465 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:18,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:18,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:18,466 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:18,467 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:18,467 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/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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 -> 60bddbffe1e2002d3081296e00d2a4e7e030158e [2019-10-22 08:56:18,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:18,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:18,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:18,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:18,512 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:18,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/gcd01-2.c [2019-10-22 08:56:18,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/data/ccb5d68dc/dda8f84dfbfa4dd4b5c59c5c47354e94/FLAG6cb3a0ee1 [2019-10-22 08:56:18,956 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:18,956 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/sv-benchmarks/c/termination-numeric/gcd01-2.c [2019-10-22 08:56:18,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/data/ccb5d68dc/dda8f84dfbfa4dd4b5c59c5c47354e94/FLAG6cb3a0ee1 [2019-10-22 08:56:18,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/data/ccb5d68dc/dda8f84dfbfa4dd4b5c59c5c47354e94 [2019-10-22 08:56:18,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:18,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:18,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:18,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:18,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:18,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79037fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18, skipping insertion in model container [2019-10-22 08:56:18,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,993 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:19,012 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:19,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:19,194 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:19,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:19,284 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:19,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19 WrapperNode [2019-10-22 08:56:19,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:19,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:19,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:19,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:19,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:19,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:19,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:19,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:19,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... [2019-10-22 08:56:19,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:19,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:19,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:19,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:19,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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 [2019-10-22 08:56:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-10-22 08:56:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-10-22 08:56:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:19,665 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:19,665 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:56:19,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:19 BoogieIcfgContainer [2019-10-22 08:56:19,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:19,667 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:19,667 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:19,671 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:19,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:19,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:18" (1/3) ... [2019-10-22 08:56:19,673 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c0f7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:19, skipping insertion in model container [2019-10-22 08:56:19,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:19,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:19" (2/3) ... [2019-10-22 08:56:19,674 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c0f7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:19, skipping insertion in model container [2019-10-22 08:56:19,674 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:19,675 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:19" (3/3) ... [2019-10-22 08:56:19,676 INFO L371 chiAutomizerObserver]: Analyzing ICFG gcd01-2.c [2019-10-22 08:56:19,724 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:19,724 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:19,724 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:19,724 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:19,724 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:19,724 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:19,724 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:19,725 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:19,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2019-10-22 08:56:19,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-10-22 08:56:19,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:19,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:19,770 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:56:19,770 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:19,770 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:19,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2019-10-22 08:56:19,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-10-22 08:56:19,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:19,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:19,773 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:56:19,773 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:19,781 INFO L791 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 18#L34true assume !(main_~n~0 <= 0); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2019-10-22 08:56:19,781 INFO L793 eck$LassoCheckResult]: Loop: 5#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 21#L16true assume !(~y1 <= 0 || ~y2 <= 0); 15#L19true assume !(~y1 == ~y2); 12#L22true assume ~y1 > ~y2; 3#L23true call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 5#gcdENTRYtrue [2019-10-22 08:56:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:19,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1513559, now seen corresponding path program 1 times [2019-10-22 08:56:19,794 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:19,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132050849] [2019-10-22 08:56:19,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,869 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:19,871 INFO L82 PathProgramCache]: Analyzing trace with hash 28756386, now seen corresponding path program 1 times [2019-10-22 08:56:19,871 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:19,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222343359] [2019-10-22 08:56:19,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,891 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash -15763700, now seen corresponding path program 1 times [2019-10-22 08:56:19,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:19,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187324734] [2019-10-22 08:56:19,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,916 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:20,035 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:20,036 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:20,036 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:20,036 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:20,037 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:20,037 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:20,037 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:20,037 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:20,037 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration1_Loop [2019-10-22 08:56:20,037 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:20,038 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:20,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,132 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:20,132 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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) [2019-10-22 08:56:20,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:20,140 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 [2019-10-22 08:56:20,150 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:20,150 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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) [2019-10-22 08:56:20,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:20,160 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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) [2019-10-22 08:56:20,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:20,173 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:20,196 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:20,197 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:20,198 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:20,198 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:20,198 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:20,198 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:20,198 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:20,198 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:20,198 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:20,198 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration1_Loop [2019-10-22 08:56:20,198 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:20,198 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:20,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,258 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:20,263 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:20,265 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 [2019-10-22 08:56:20,266 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:20,266 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:20,267 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:20,267 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:20,267 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:20,269 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:20,269 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:20,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:20,273 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 [2019-10-22 08:56:20,274 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:20,275 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:20,275 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:20,275 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:20,275 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:20,276 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:20,276 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:20,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:20,277 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 [2019-10-22 08:56:20,278 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:20,279 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:20,279 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:20,279 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:20,279 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:20,280 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:20,280 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:20,288 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:20,296 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:56:20,296 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:56:20,298 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:20,298 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:20,298 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:20,299 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2019-10-22 08:56:20,302 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:20,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:20,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:20,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:20,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:20,420 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-10-22 08:56:20,421 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 5 states. [2019-10-22 08:56:20,598 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 5 states. Result 93 states and 129 transitions. Complement of second has 30 states. [2019-10-22 08:56:20,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:56:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2019-10-22 08:56:20,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 5 letters. [2019-10-22 08:56:20,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:20,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 9 letters. Loop has 5 letters. [2019-10-22 08:56:20,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:20,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 10 letters. [2019-10-22 08:56:20,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:20,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 129 transitions. [2019-10-22 08:56:20,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:56:20,618 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 35 states and 40 transitions. [2019-10-22 08:56:20,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-10-22 08:56:20,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-10-22 08:56:20,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 40 transitions. [2019-10-22 08:56:20,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:20,620 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-10-22 08:56:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 40 transitions. [2019-10-22 08:56:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 17. [2019-10-22 08:56:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:56:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-10-22 08:56:20,644 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-10-22 08:56:20,644 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-10-22 08:56:20,644 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:20,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2019-10-22 08:56:20,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:56:20,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:20,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:20,645 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:20,645 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:20,646 INFO L791 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 209#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 214#L34 assume !(main_~n~0 <= 0); 200#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 202#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2019-10-22 08:56:20,646 INFO L793 eck$LassoCheckResult]: Loop: 205#L16 assume !(~y1 <= 0 || ~y2 <= 0); 210#L19 assume !(~y1 == ~y2); 211#L22 assume !(~y1 > ~y2); 204#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 203#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2019-10-22 08:56:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash 46920329, now seen corresponding path program 1 times [2019-10-22 08:56:20,647 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:20,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332065261] [2019-10-22 08:56:20,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:20,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:20,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:20,657 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 1 times [2019-10-22 08:56:20,658 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:20,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612291950] [2019-10-22 08:56:20,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:20,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:20,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:20,668 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash -488671755, now seen corresponding path program 1 times [2019-10-22 08:56:20,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:20,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107817228] [2019-10-22 08:56:20,669 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:20,669 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:20,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:20,683 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:20,771 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:20,772 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:20,772 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:20,772 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:20,772 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:20,772 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:20,772 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:20,772 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:20,772 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration2_Loop [2019-10-22 08:56:20,772 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:20,773 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:20,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:20,877 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:20,877 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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 [2019-10-22 08:56:20,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:20,887 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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 [2019-10-22 08:56:20,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:20,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:22,081 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:22,083 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:22,083 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:22,083 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:22,084 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:22,084 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:22,084 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,084 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:22,084 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:22,084 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration2_Loop [2019-10-22 08:56:22,084 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:22,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:22,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:22,207 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:22,207 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 [2019-10-22 08:56:22,208 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:22,209 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:22,209 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:22,209 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:22,209 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:22,211 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:22,211 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:22,220 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:22,231 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-10-22 08:56:22,231 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:56:22,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:22,232 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:22,232 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:22,232 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2019-10-22 08:56:22,233 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:22,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:22,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:22,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:22,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:22,307 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 [2019-10-22 08:56:22,307 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-10-22 08:56:22,337 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 53 states and 60 transitions. Complement of second has 11 states. [2019-10-22 08:56:22,338 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 [2019-10-22 08:56:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-10-22 08:56:22,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 5 letters. [2019-10-22 08:56:22,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:22,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2019-10-22 08:56:22,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:22,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2019-10-22 08:56:22,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:22,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 60 transitions. [2019-10-22 08:56:22,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:56:22,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 32 states and 36 transitions. [2019-10-22 08:56:22,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-10-22 08:56:22,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-10-22 08:56:22,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2019-10-22 08:56:22,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:22,344 INFO L688 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-10-22 08:56:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2019-10-22 08:56:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2019-10-22 08:56:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 08:56:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-22 08:56:22,347 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-22 08:56:22,347 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-22 08:56:22,347 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:56:22,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-10-22 08:56:22,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:56:22,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:22,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:22,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:22,348 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:22,349 INFO L791 eck$LassoCheckResult]: Stem: 335#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 336#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 344#L34 assume !(main_~n~0 <= 0); 331#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 332#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 333#L16 assume !(~y1 <= 0 || ~y2 <= 0); 349#L19 assume !(~y1 == ~y2); 348#L22 assume ~y1 > ~y2; 327#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 329#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2019-10-22 08:56:22,349 INFO L793 eck$LassoCheckResult]: Loop: 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 337#L19 assume !(~y1 == ~y2); 339#L22 assume !(~y1 > ~y2); 338#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 342#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2019-10-22 08:56:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -488674700, now seen corresponding path program 2 times [2019-10-22 08:56:22,349 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:22,350 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540140844] [2019-10-22 08:56:22,350 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,350 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,363 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,364 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 2 times [2019-10-22 08:56:22,364 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:22,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043235753] [2019-10-22 08:56:22,364 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,372 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1201587990, now seen corresponding path program 1 times [2019-10-22 08:56:22,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:22,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888974495] [2019-10-22 08:56:22,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,390 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:22,470 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:22,470 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:22,471 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:22,471 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:22,471 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:22,471 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,471 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:22,471 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:22,471 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration3_Loop [2019-10-22 08:56:22,471 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:22,471 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:22,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,565 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:22,565 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:22,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:22,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:22,571 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret0=0} Honda state: {gcd_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/bin/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:22,575 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cf257182-237c-4b6a-aaa7-0676cbbefe0f/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:22,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:23,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:23,055 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:23,055 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:23,055 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:23,055 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:23,055 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:23,055 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:23,055 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:23,055 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:23,055 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration3_Loop [2019-10-22 08:56:23,055 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:23,056 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:23,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:23,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:23,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:23,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:23,167 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:23,167 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:23,167 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 [2019-10-22 08:56:23,168 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:23,168 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:23,168 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:23,168 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:23,168 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:23,169 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:23,169 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:23,170 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:23,170 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 [2019-10-22 08:56:23,171 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:23,171 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:23,171 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:23,171 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:23,171 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:23,172 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:23,172 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:23,179 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:23,186 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-10-22 08:56:23,186 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:56:23,186 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:23,187 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:23,187 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:23,187 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2019-10-22 08:56:23,187 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:23,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:23,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:23,268 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 [2019-10-22 08:56:23,268 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-10-22 08:56:23,298 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 50 transitions. Complement of second has 11 states. [2019-10-22 08:56:23,300 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 [2019-10-22 08:56:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-10-22 08:56:23,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2019-10-22 08:56:23,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:23,301 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:56:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:23,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:23,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:23,371 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:56:23,371 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-10-22 08:56:23,402 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 50 transitions. Complement of second has 11 states. [2019-10-22 08:56:23,404 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 [2019-10-22 08:56:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-10-22 08:56:23,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2019-10-22 08:56:23,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:23,405 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:56:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:23,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:23,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:23,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:23,466 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 3 loop predicates [2019-10-22 08:56:23,466 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-10-22 08:56:23,496 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 74 states and 85 transitions. Complement of second has 12 states. [2019-10-22 08:56:23,496 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 [2019-10-22 08:56:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-10-22 08:56:23,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 5 letters. [2019-10-22 08:56:23,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:23,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 15 letters. Loop has 5 letters. [2019-10-22 08:56:23,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:23,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 10 letters. [2019-10-22 08:56:23,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:23,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 85 transitions. [2019-10-22 08:56:23,500 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:23,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 0 states and 0 transitions. [2019-10-22 08:56:23,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:56:23,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:56:23,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:56:23,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:23,500 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:23,500 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:23,500 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:23,501 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:56:23,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:23,501 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:23,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:56:23,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:23 BoogieIcfgContainer [2019-10-22 08:56:23,507 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:23,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:23,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:23,508 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:23,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:19" (3/4) ... [2019-10-22 08:56:23,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:56:23,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:23,514 INFO L168 Benchmark]: Toolchain (without parser) took 4534.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -104.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:23,514 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:23,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:23,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.99 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. [2019-10-22 08:56:23,515 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 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. [2019-10-22 08:56:23,516 INFO L168 Benchmark]: RCFGBuilder took 346.85 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:23,516 INFO L168 Benchmark]: BuchiAutomizer took 3840.38 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: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:23,517 INFO L168 Benchmark]: Witness Printer took 4.28 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. [2019-10-22 08:56:23,519 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.99 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 12.25 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 346.85 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3840.38 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: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.28 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y1) and consists of 7 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 24 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 47 SDtfs, 78 SDslu, 8 SDs, 0 SdLazy, 115 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf91 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf91 smp89 dnf100 smp100 tf106 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...