./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-numeric/gcd01-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.24-30f4e4a [2019-11-28 02:58:01,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:58:01,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:58:01,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:58:01,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:58:01,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:58:01,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:58:01,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:58:01,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:58:01,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:58:01,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:58:01,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:58:01,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:58:01,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:58:01,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:58:01,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:58:01,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:58:01,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:58:01,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:58:01,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:58:01,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:58:01,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:58:01,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:58:01,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:58:01,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:58:01,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:58:01,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:58:01,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:58:01,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:58:01,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:58:01,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:58:01,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:58:01,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:58:01,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:58:01,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:58:01,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:58:01,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:58:01,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:58:01,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:58:01,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:58:01,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:58:01,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:58:01,329 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:58:01,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:58:01,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:58:01,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:58:01,333 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:58:01,333 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:58:01,333 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:58:01,333 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:58:01,334 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:58:01,334 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:58:01,334 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:58:01,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:58:01,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:58:01,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:58:01,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:58:01,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:58:01,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:58:01,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:58:01,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:58:01,337 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:58:01,337 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:58:01,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:58:01,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:58:01,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:58:01,338 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:58:01,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:58:01,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:58:01,339 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:58:01,340 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:58:01,341 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2019-11-28 02:58:01,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:58:01,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:58:01,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:58:01,683 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:58:01,684 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:58:01,684 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/gcd01-2.c [2019-11-28 02:58:01,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b6f365f/d8bd3836f74a47efbe4b3f78474b3c92/FLAG60e37670d [2019-11-28 02:58:02,190 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:58:02,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/gcd01-2.c [2019-11-28 02:58:02,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b6f365f/d8bd3836f74a47efbe4b3f78474b3c92/FLAG60e37670d [2019-11-28 02:58:02,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b6f365f/d8bd3836f74a47efbe4b3f78474b3c92 [2019-11-28 02:58:02,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:58:02,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:58:02,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:02,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:58:02,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:58:02,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1844f808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02, skipping insertion in model container [2019-11-28 02:58:02,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:58:02,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:58:02,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:02,818 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:58:02,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:02,849 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:58:02,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02 WrapperNode [2019-11-28 02:58:02,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:02,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:02,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:58:02,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:58:02,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:02,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:58:02,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:58:02,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:58:02,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... [2019-11-28 02:58:02,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:58:02,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:58:02,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:58:02,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:58:02,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-11-28 02:58:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-11-28 02:58:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:58:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:58:03,215 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:58:03,216 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:58:03,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:03 BoogieIcfgContainer [2019-11-28 02:58:03,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:58:03,219 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:58:03,219 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:58:03,223 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:58:03,225 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:03,225 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:02" (1/3) ... [2019-11-28 02:58:03,227 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bd96099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:03, skipping insertion in model container [2019-11-28 02:58:03,227 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:03,227 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:02" (2/3) ... [2019-11-28 02:58:03,228 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bd96099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:03, skipping insertion in model container [2019-11-28 02:58:03,228 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:03,228 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:03" (3/3) ... [2019-11-28 02:58:03,230 INFO L371 chiAutomizerObserver]: Analyzing ICFG gcd01-2.c [2019-11-28 02:58:03,296 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:58:03,297 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:58:03,297 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:58:03,297 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:58:03,297 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:58:03,298 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:58:03,298 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:58:03,298 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:58:03,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2019-11-28 02:58:03,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:58:03,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:03,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:03,362 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 02:58:03,362 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-28 02:58:03,363 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:58:03,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2019-11-28 02:58:03,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:58:03,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:03,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:03,369 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 02:58:03,369 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-28 02:58:03,378 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 18#L34true assume !(main_~n~0 <= 0); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2019-11-28 02:58:03,379 INFO L796 eck$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 [2019-11-28 02:58:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1513559, now seen corresponding path program 1 times [2019-11-28 02:58:03,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:03,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068657793] [2019-11-28 02:58:03,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:03,504 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:03,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 28756386, now seen corresponding path program 1 times [2019-11-28 02:58:03,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:03,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571767352] [2019-11-28 02:58:03,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:03,539 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash -15763700, now seen corresponding path program 1 times [2019-11-28 02:58:03,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:03,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226685796] [2019-11-28 02:58:03,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:03,587 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:03,727 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2019-11-28 02:58:03,818 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:03,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:03,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:03,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:03,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:03,820 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:03,820 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:03,820 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:03,821 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration1_Loop [2019-11-28 02:58:03,821 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:03,821 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:03,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:03,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:03,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:03,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:03,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:03,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:03,960 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:03,961 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:03,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:03,969 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 [2019-11-28 02:58:03,980 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:03,980 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:04,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:04,001 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:04,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:04,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:04,056 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:04,060 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:04,061 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:04,061 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:04,061 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:04,061 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:04,062 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:04,063 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:04,063 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:04,063 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration1_Loop [2019-11-28 02:58:04,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:04,064 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:04,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,147 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:04,153 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:04,173 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 [2019-11-28 02:58:04,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:04,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:04,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:04,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:04,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:04,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:04,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:04,184 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:04,201 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 [2019-11-28 02:58:04,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:04,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:04,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:04,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:04,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:04,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:04,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:04,212 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:04,232 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 Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:04,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:04,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:04,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:04,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:04,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:04,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:04,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:04,247 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:04,269 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:58:04,269 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:04,279 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:04,280 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:04,280 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:04,281 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2019-11-28 02:58:04,287 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:04,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:04,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:04,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:04,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:04,437 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 [2019-11-28 02:58:04,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 5 states. [2019-11-28 02:58:04,691 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. [2019-11-28 02:58:04,692 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 [2019-11-28 02:58:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:58:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2019-11-28 02:58:04,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 5 letters. [2019-11-28 02:58:04,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:04,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 9 letters. Loop has 5 letters. [2019-11-28 02:58:04,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:04,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 10 letters. [2019-11-28 02:58:04,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:04,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 129 transitions. [2019-11-28 02:58:04,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:58:04,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 35 states and 40 transitions. [2019-11-28 02:58:04,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-28 02:58:04,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-11-28 02:58:04,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 40 transitions. [2019-11-28 02:58:04,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:04,724 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-11-28 02:58:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 40 transitions. [2019-11-28 02:58:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 17. [2019-11-28 02:58:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 02:58:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-28 02:58:04,760 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-28 02:58:04,760 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-28 02:58:04,760 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:58:04,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2019-11-28 02:58:04,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:58:04,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:04,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:04,762 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 02:58:04,763 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-28 02:58:04,763 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 209#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 214#L34 assume !(main_~n~0 <= 0); 200#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 202#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2019-11-28 02:58:04,763 INFO L796 eck$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 [2019-11-28 02:58:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:04,764 INFO L82 PathProgramCache]: Analyzing trace with hash 46920329, now seen corresponding path program 1 times [2019-11-28 02:58:04,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:04,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471813728] [2019-11-28 02:58:04,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:04,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 1 times [2019-11-28 02:58:04,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:04,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866526992] [2019-11-28 02:58:04,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:04,819 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:04,820 INFO L82 PathProgramCache]: Analyzing trace with hash -488671755, now seen corresponding path program 1 times [2019-11-28 02:58:04,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:04,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346452333] [2019-11-28 02:58:04,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:04,849 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:04,951 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:04,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:04,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:04,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:04,952 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:04,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:04,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:04,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:04,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration2_Loop [2019-11-28 02:58:04,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:04,953 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:04,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:04,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:05,119 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:05,120 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:05,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:05,135 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:05,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:05,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:06,402 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:06,405 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:06,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:06,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:06,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:06,406 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:06,406 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,406 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:06,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:06,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration2_Loop [2019-11-28 02:58:06,410 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:06,410 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:06,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,563 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:06,564 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,577 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 [2019-11-28 02:58:06,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:06,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:06,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:06,593 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:06,599 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:06,599 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,612 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:06,613 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:06,613 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:06,613 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2019-11-28 02:58:06,616 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:06,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:06,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:06,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:06,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:06,736 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 [2019-11-28 02:58:06,737 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-28 02:58:06,784 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. [2019-11-28 02:58:06,784 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 [2019-11-28 02:58:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 02:58:06,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 5 letters. [2019-11-28 02:58:06,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:06,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-28 02:58:06,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:06,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-28 02:58:06,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:06,788 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 60 transitions. [2019-11-28 02:58:06,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:58:06,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 32 states and 36 transitions. [2019-11-28 02:58:06,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 02:58:06,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-28 02:58:06,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2019-11-28 02:58:06,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:06,798 INFO L688 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-28 02:58:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2019-11-28 02:58:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2019-11-28 02:58:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:58:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-28 02:58:06,806 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 02:58:06,807 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 02:58:06,807 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:58:06,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-11-28 02:58:06,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:58:06,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:06,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:06,810 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:06,810 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-28 02:58:06,811 INFO L794 eck$LassoCheckResult]: Stem: 335#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 336#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 344#L34 assume !(main_~n~0 <= 0); 331#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 332#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 333#L16 assume !(~y1 <= 0 || ~y2 <= 0); 349#L19 assume !(~y1 == ~y2); 348#L22 assume ~y1 > ~y2; 327#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 329#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2019-11-28 02:58:06,811 INFO L796 eck$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 [2019-11-28 02:58:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:06,811 INFO L82 PathProgramCache]: Analyzing trace with hash -488674700, now seen corresponding path program 2 times [2019-11-28 02:58:06,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:06,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302652547] [2019-11-28 02:58:06,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:06,860 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:06,863 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 2 times [2019-11-28 02:58:06,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:06,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641568308] [2019-11-28 02:58:06,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:06,884 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1201587990, now seen corresponding path program 1 times [2019-11-28 02:58:06,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:06,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985042237] [2019-11-28 02:58:06,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:06,915 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:07,000 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:07,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:07,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:07,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:07,001 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:07,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:07,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:07,002 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:07,002 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration3_Loop [2019-11-28 02:58:07,002 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:07,002 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:07,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,134 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:07,135 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:07,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:07,148 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:07,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:07,154 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:07,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:07,171 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:07,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:07,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:07,731 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:07,734 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:07,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:07,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:07,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:07,735 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:07,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:07,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:07,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:07,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-2.c_Iteration3_Loop [2019-11-28 02:58:07,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:07,736 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:07,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:07,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:07,850 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:07,879 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 [2019-11-28 02:58:07,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:07,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:07,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:07,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:07,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:07,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:07,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:07,886 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:07,904 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 [2019-11-28 02:58:07,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:07,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:07,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:07,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:07,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:07,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:07,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:07,914 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:07,921 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:07,921 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:58:07,927 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:07,927 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:07,928 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:07,928 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2019-11-28 02:58:07,931 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:07,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:08,010 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 [2019-11-28 02:58:08,010 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:08,043 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. [2019-11-28 02:58:08,045 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 [2019-11-28 02:58:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 02:58:08,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-28 02:58:08,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:08,047 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:08,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:08,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:08,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:08,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:08,119 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 [2019-11-28 02:58:08,120 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:08,143 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. [2019-11-28 02:58:08,143 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 [2019-11-28 02:58:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 02:58:08,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-28 02:58:08,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:08,144 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:08,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:08,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:08,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:08,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:08,218 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 [2019-11-28 02:58:08,219 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:08,253 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. [2019-11-28 02:58:08,254 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 [2019-11-28 02:58:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-28 02:58:08,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-28 02:58:08,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:08,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 15 letters. Loop has 5 letters. [2019-11-28 02:58:08,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:08,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 10 letters. [2019-11-28 02:58:08,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:08,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 85 transitions. [2019-11-28 02:58:08,260 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:58:08,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 0 states and 0 transitions. [2019-11-28 02:58:08,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:58:08,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:58:08,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:58:08,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:58:08,261 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:08,261 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:08,262 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:08,262 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:58:08,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:58:08,262 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:58:08,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:58:08,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:08 BoogieIcfgContainer [2019-11-28 02:58:08,270 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:58:08,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:58:08,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:58:08,274 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:58:08,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:03" (3/4) ... [2019-11-28 02:58:08,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:58:08,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:58:08,280 INFO L168 Benchmark]: Toolchain (without parser) took 5716.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:08,281 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:08,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.51 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:08,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -204.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:08,287 INFO L168 Benchmark]: Boogie Preprocessor took 18.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:08,288 INFO L168 Benchmark]: RCFGBuilder took 257.21 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:08,291 INFO L168 Benchmark]: BuchiAutomizer took 5051.47 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -7.5 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:08,292 INFO L168 Benchmark]: Witness Printer took 7.99 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. [2019-11-28 02:58:08,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.51 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -204.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 257.21 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5051.47 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -7.5 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. * Witness Printer took 7.99 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. * 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 4.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 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: 30ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...