./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c 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-restricted-15/GCD3.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 aae625cda61f26fa063b78c3d3a58aff5ded8a89 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:30:52,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:30:52,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:30:52,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:30:52,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:30:52,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:30:52,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:30:52,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:30:52,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:30:52,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:30:52,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:30:52,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:30:52,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:30:52,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:30:52,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:30:52,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:30:52,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:30:52,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:30:52,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:30:52,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:30:52,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:30:52,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:30:52,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:30:52,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:30:52,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:30:52,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:30:52,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:30:52,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:30:52,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:30:52,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:30:52,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:30:52,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:30:52,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:30:52,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:30:52,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:30:52,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:30:52,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:30:52,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:30:52,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:30:52,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:30:52,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:30:52,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:30:52,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:30:52,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:30:52,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:30:52,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:30:52,736 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:30:52,736 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:30:52,736 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:30:52,737 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:30:52,737 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:30:52,737 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:30:52,738 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:30:52,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:30:52,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:30:52,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:30:52,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:30:52,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:30:52,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:30:52,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:30:52,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:30:52,742 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:30:52,743 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:30:52,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:30:52,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:30:52,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:30:52,747 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:30:52,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:30:52,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:30:52,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:30:52,749 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:30:52,750 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:30:52,750 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 -> aae625cda61f26fa063b78c3d3a58aff5ded8a89 [2019-11-28 20:30:53,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:30:53,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:30:53,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:30:53,162 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:30:53,163 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:30:53,164 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD3.c [2019-11-28 20:30:53,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb156c20/e3884574e1fc49f28b08dfb521925785/FLAG4fc8e3ea6 [2019-11-28 20:30:53,686 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:30:53,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD3.c [2019-11-28 20:30:53,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb156c20/e3884574e1fc49f28b08dfb521925785/FLAG4fc8e3ea6 [2019-11-28 20:30:54,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb156c20/e3884574e1fc49f28b08dfb521925785 [2019-11-28 20:30:54,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:30:54,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:30:54,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:30:54,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:30:54,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:30:54,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d217661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54, skipping insertion in model container [2019-11-28 20:30:54,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:30:54,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:30:54,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:30:54,276 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:30:54,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:30:54,307 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:30:54,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54 WrapperNode [2019-11-28 20:30:54,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:30:54,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:30:54,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:30:54,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:30:54,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:30:54,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:30:54,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:30:54,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:30:54,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (1/1) ... [2019-11-28 20:30:54,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:30:54,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:30:54,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:30:54,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:30:54,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (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 20:30:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:30:54,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:30:54,670 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:30:54,671 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 20:30:54,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:54 BoogieIcfgContainer [2019-11-28 20:30:54,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:30:54,673 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:30:54,673 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:30:54,677 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:30:54,678 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:54,679 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:30:54" (1/3) ... [2019-11-28 20:30:54,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10496261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:30:54, skipping insertion in model container [2019-11-28 20:30:54,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:54,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:54" (2/3) ... [2019-11-28 20:30:54,681 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10496261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:30:54, skipping insertion in model container [2019-11-28 20:30:54,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:54,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:54" (3/3) ... [2019-11-28 20:30:54,683 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD3.c [2019-11-28 20:30:54,749 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:30:54,750 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:30:54,750 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:30:54,750 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:30:54,751 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:30:54,751 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:30:54,751 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:30:54,751 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:30:54,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 20:30:54,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 20:30:54,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:54,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:54,806 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:30:54,807 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:30:54,807 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:30:54,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 20:30:54,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 20:30:54,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:54,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:54,810 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:30:54,810 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:30:54,820 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-2true [2019-11-28 20:30:54,821 INFO L796 eck$LassoCheckResult]: Loop: 11#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17true assume 0 == main_~y~0;main_~y~0 := main_~y~0; 7#L21-2true assume !(main_~xtmp~0 > 0); 5#L31-2true assume !true; 4#L31-3true main_~y~0 := main_~xtmp~0; 15#L25-1true main_~x~0 := main_~tmp~0; 11#L13-2true [2019-11-28 20:30:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:54,829 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:30:54,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:54,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584374679] [2019-11-28 20:30:54,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:54,936 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:54,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1187012529, now seen corresponding path program 1 times [2019-11-28 20:30:54,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:54,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081915084] [2019-11-28 20:30:54,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:55,005 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 20:30:55,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081915084] [2019-11-28 20:30:55,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:30:55,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:30:55,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019047953] [2019-11-28 20:30:55,015 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 20:30:55,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:30:55,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:30:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:30:55,033 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-28 20:30:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:30:55,087 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-28 20:30:55,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:30:55,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2019-11-28 20:30:55,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 20:30:55,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2019-11-28 20:30:55,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 20:30:55,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-28 20:30:55,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-28 20:30:55,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:30:55,101 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:30:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-28 20:30:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 20:30:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:30:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-28 20:30:55,128 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:30:55,128 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:30:55,128 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:30:55,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-28 20:30:55,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 20:30:55,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:55,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:55,130 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:30:55,130 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:30:55,130 INFO L794 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 40#L13-2 [2019-11-28 20:30:55,130 INFO L796 eck$LassoCheckResult]: Loop: 40#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 41#L17 assume !(0 == main_~y~0); 37#L21 assume !(main_~y~0 < 0); 38#L21-2 assume !(main_~xtmp~0 > 0); 45#L31-2 assume !(main_~xtmp~0 < 0); 42#L31-3 main_~y~0 := main_~xtmp~0; 43#L25-1 main_~x~0 := main_~tmp~0; 40#L13-2 [2019-11-28 20:30:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:55,131 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-28 20:30:55,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:55,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451842069] [2019-11-28 20:30:55,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,139 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1817939337, now seen corresponding path program 1 times [2019-11-28 20:30:55,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:55,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536506721] [2019-11-28 20:30:55,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:55,168 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 20:30:55,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536506721] [2019-11-28 20:30:55,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:30:55,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:30:55,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789103552] [2019-11-28 20:30:55,170 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 20:30:55,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:30:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:30:55,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:30:55,171 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-28 20:30:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:30:55,187 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-28 20:30:55,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:30:55,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-28 20:30:55,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-28 20:30:55,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-11-28 20:30:55,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-28 20:30:55,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 20:30:55,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-28 20:30:55,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:30:55,191 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 20:30:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-28 20:30:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2019-11-28 20:30:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 20:30:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-28 20:30:55,193 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 20:30:55,193 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 20:30:55,194 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:30:55,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-11-28 20:30:55,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:30:55,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:55,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:55,195 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:30:55,195 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:30:55,195 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L13-2 [2019-11-28 20:30:55,196 INFO L796 eck$LassoCheckResult]: Loop: 68#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 69#L17 assume !(0 == main_~y~0); 65#L21 assume !(main_~y~0 < 0); 66#L21-2 assume main_~xtmp~0 > 0; 72#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 70#L26-3 main_~y~0 := main_~xtmp~0; 71#L25-1 main_~x~0 := main_~tmp~0; 68#L13-2 [2019-11-28 20:30:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-28 20:30:55,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:55,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189383980] [2019-11-28 20:30:55,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1818401082, now seen corresponding path program 1 times [2019-11-28 20:30:55,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:55,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796870439] [2019-11-28 20:30:55,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,236 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:55,237 INFO L82 PathProgramCache]: Analyzing trace with hash 669111751, now seen corresponding path program 1 times [2019-11-28 20:30:55,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:55,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818900726] [2019-11-28 20:30:55,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:55,252 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:55,331 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:55,332 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:55,332 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:55,332 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:55,332 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:55,332 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:55,332 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:55,332 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:55,333 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2019-11-28 20:30:55,333 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:55,333 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:55,352 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 20:30:55,359 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 20:30:55,365 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 20:30:55,487 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:55,488 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 20:30:55,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:55,500 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 20:30:55,511 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:55,512 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} 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 20:30:55,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:55,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:55,537 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:55,537 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 20:30:55,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:55,548 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 20:30:55,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:55,580 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:59,316 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:59,319 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:59,319 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:59,319 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:59,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:59,320 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:59,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:59,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:59,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:59,320 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2019-11-28 20:30:59,320 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:59,321 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:59,322 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 20:30:59,332 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 20:30:59,337 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 20:30:59,448 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:59,454 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:59,463 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 20:30:59,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:59,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:59,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:59,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:59,473 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:59,474 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:30:59,480 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:59,499 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 20:30:59,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:59,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:59,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:59,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:59,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:30:59,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:30:59,516 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:59,542 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 20:30:59,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:59,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:59,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:59,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:59,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:59,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:59,557 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:59,564 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:59,586 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:30:59,587 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 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 20:30:59,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:59,594 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:59,594 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:59,595 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 20:30:59,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:30:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:59,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:30:59,673 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:59,685 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:30:59,686 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:59,746 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 20:30:59,750 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 20:30:59,750 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-11-28 20:30:59,844 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 27 states and 32 transitions. Complement of second has 9 states. [2019-11-28 20:30:59,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 20:30:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-28 20:30:59,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 7 letters. [2019-11-28 20:30:59,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:59,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 7 letters. [2019-11-28 20:30:59,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:59,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 14 letters. [2019-11-28 20:30:59,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:59,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2019-11-28 20:30:59,852 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 20:30:59,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2019-11-28 20:30:59,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 20:30:59,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-28 20:30:59,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2019-11-28 20:30:59,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:59,854 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 20:30:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2019-11-28 20:30:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-28 20:30:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 20:30:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-28 20:30:59,858 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-28 20:30:59,858 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-28 20:30:59,858 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:30:59,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2019-11-28 20:30:59,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:30:59,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:59,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:59,860 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:30:59,860 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:30:59,860 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 159#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 161#L17 assume !(0 == main_~y~0); 174#L21 assume !(main_~y~0 < 0); 173#L21-2 assume main_~xtmp~0 > 0; 169#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2019-11-28 20:30:59,860 INFO L796 eck$LassoCheckResult]: Loop: 170#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2019-11-28 20:30:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash 925834904, now seen corresponding path program 1 times [2019-11-28 20:30:59,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:59,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981658327] [2019-11-28 20:30:59,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:59,876 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2019-11-28 20:30:59,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:59,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977997972] [2019-11-28 20:30:59,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:59,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:59,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889015, now seen corresponding path program 2 times [2019-11-28 20:30:59,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:59,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242003031] [2019-11-28 20:30:59,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:59,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:59,978 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:59,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:59,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:59,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:59,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:59,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:59,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:59,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:59,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2019-11-28 20:30:59,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:59,979 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:59,983 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 20:30:59,988 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 20:30:59,990 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 20:31:00,012 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 20:31:00,016 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 20:31:00,020 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 20:31:00,107 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:00,107 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 20:31:00,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:00,114 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:00,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:00,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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) [2019-11-28 20:31:00,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:00,137 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:00,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:00,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2019-11-28 20:31:00,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:00,158 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 20:31:00,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:00,188 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 20:31:00,435 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:00,438 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:00,439 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:00,439 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:00,439 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:00,439 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:00,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:00,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:00,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:00,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2019-11-28 20:31:00,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:00,443 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:00,448 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 20:31:00,452 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 20:31:00,469 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 20:31:00,474 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 20:31:00,476 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 20:31:00,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:00,565 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:00,565 INFO L489 LassoAnalysis]: Using template 'affine'. 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 20:31:00,573 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 20:31:00,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:00,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:00,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:00,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:00,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:00,579 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:00,583 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 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 20:31:00,594 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 20:31:00,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:00,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:00,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:00,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:00,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:00,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:00,612 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:00,620 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 20:31:00,621 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. 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) [2019-11-28 20:31:00,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:00,638 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-28 20:31:00,639 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:00,639 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0, 1*ULTIMATE.start_main_~xtmp~0 >= 0] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:31:00,645 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2019-11-28 20:31:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:00,693 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:31:00,694 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:00,707 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:00,708 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:00,708 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 20:31:00,709 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:31:00,709 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:31:00,769 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 31 transitions. Complement of second has 6 states. [2019-11-28 20:31:00,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:31:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 20:31:00,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-28 20:31:00,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:00,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 20:31:00,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:00,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 20:31:00,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:00,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2019-11-28 20:31:00,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:31:00,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2019-11-28 20:31:00,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 20:31:00,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-28 20:31:00,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2019-11-28 20:31:00,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:31:00,783 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-28 20:31:00,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2019-11-28 20:31:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-28 20:31:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 20:31:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-11-28 20:31:00,789 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-28 20:31:00,789 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-28 20:31:00,790 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:31:00,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2019-11-28 20:31:00,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 20:31:00,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:00,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:00,794 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:31:00,794 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:31:00,794 INFO L794 eck$LassoCheckResult]: Stem: 260#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 261#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 275#L17 assume !(0 == main_~y~0); 278#L21 assume !(main_~y~0 < 0); 277#L21-2 assume main_~xtmp~0 > 0; 276#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 274#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2019-11-28 20:31:00,794 INFO L796 eck$LassoCheckResult]: Loop: 266#L26-3 main_~y~0 := main_~xtmp~0; 267#L25-1 main_~x~0 := main_~tmp~0; 262#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 263#L17 assume !(0 == main_~y~0); 256#L21 assume !(main_~y~0 < 0); 257#L21-2 assume main_~xtmp~0 > 0; 270#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2019-11-28 20:31:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 1 times [2019-11-28 20:31:00,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:00,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355448299] [2019-11-28 20:31:00,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:00,833 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1776384388, now seen corresponding path program 2 times [2019-11-28 20:31:00,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:00,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041811087] [2019-11-28 20:31:00,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:00,860 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190014, now seen corresponding path program 1 times [2019-11-28 20:31:00,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:00,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199610691] [2019-11-28 20:31:00,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:31:00,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199610691] [2019-11-28 20:31:00,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204053970] [2019-11-28 20:31:00,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 20:31:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:01,006 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:31:01,008 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:31:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:31:01,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:31:01,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-28 20:31:01,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515141144] [2019-11-28 20:31:01,078 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:01,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:01,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:01,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:01,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:31:01,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:01,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:01,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:01,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2019-11-28 20:31:01,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:01,080 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:01,082 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 20:31:01,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:01,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:01,182 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:01,182 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 20:31:01,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:01,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:31:01,194 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:01,194 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:01,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:01,210 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:01,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:01,236 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:03,700 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:03,703 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:03,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:03,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:03,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:03,704 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:03,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:03,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:03,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:03,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2019-11-28 20:31:03,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:03,705 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:03,706 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 20:31:03,715 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 20:31:03,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Stream Closed [2019-11-28 20:31:03,847 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:03,847 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:03,852 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 20:31:03,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:03,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:03,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:03,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:03,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:03,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:03,861 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:03,871 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 20:31:03,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:03,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:03,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:03,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:03,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:03,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:03,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:03,880 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:03,887 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:31:03,887 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:03,900 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:31:03,900 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:31:03,900 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:03,900 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-28 20:31:03,903 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:03,933 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:03,933 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:03,943 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:03,943 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:03,975 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 20:31:03,976 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 20:31:03,976 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 20:31:04,044 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 58 states and 72 transitions. Complement of second has 8 states. [2019-11-28 20:31:04,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:31:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-28 20:31:04,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 7 letters. [2019-11-28 20:31:04,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:04,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 7 letters. [2019-11-28 20:31:04,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:04,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 14 letters. [2019-11-28 20:31:04,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:04,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 72 transitions. [2019-11-28 20:31:04,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 20:31:04,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 53 states and 67 transitions. [2019-11-28 20:31:04,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-28 20:31:04,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-28 20:31:04,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 67 transitions. [2019-11-28 20:31:04,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:31:04,061 INFO L688 BuchiCegarLoop]: Abstraction has 53 states and 67 transitions. [2019-11-28 20:31:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 67 transitions. [2019-11-28 20:31:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2019-11-28 20:31:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-28 20:31:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2019-11-28 20:31:04,072 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2019-11-28 20:31:04,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:31:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:31:04,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:31:04,073 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 8 states. [2019-11-28 20:31:04,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:31:04,216 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-11-28 20:31:04,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:31:04,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2019-11-28 20:31:04,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 20:31:04,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 31 states and 37 transitions. [2019-11-28 20:31:04,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-28 20:31:04,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-28 20:31:04,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2019-11-28 20:31:04,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:31:04,220 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-28 20:31:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2019-11-28 20:31:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-11-28 20:31:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 20:31:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-28 20:31:04,222 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-28 20:31:04,222 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-28 20:31:04,222 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:31:04,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2019-11-28 20:31:04,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 20:31:04,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:04,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:04,224 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:31:04,224 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:31:04,224 INFO L794 eck$LassoCheckResult]: Stem: 563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 564#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 580#L17 assume !(0 == main_~y~0); 579#L21 assume !(main_~y~0 < 0); 578#L21-2 assume main_~xtmp~0 > 0; 577#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 576#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2019-11-28 20:31:04,224 INFO L796 eck$LassoCheckResult]: Loop: 567#L26-3 main_~y~0 := main_~xtmp~0; 568#L25-1 main_~x~0 := main_~tmp~0; 565#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 566#L17 assume !(0 == main_~y~0); 561#L21 assume !(main_~y~0 < 0); 562#L21-2 assume main_~xtmp~0 > 0; 569#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 570#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2019-11-28 20:31:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:04,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 2 times [2019-11-28 20:31:04,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:04,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699205967] [2019-11-28 20:31:04,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:04,235 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:04,236 INFO L82 PathProgramCache]: Analyzing trace with hash -766658727, now seen corresponding path program 1 times [2019-11-28 20:31:04,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:04,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362277718] [2019-11-28 20:31:04,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:04,249 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:04,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1189119455, now seen corresponding path program 2 times [2019-11-28 20:31:04,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:04,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699845796] [2019-11-28 20:31:04,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:04,289 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:04,343 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:04,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:04,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:04,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:04,344 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:31:04,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:04,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:04,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:04,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2019-11-28 20:31:04,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:04,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:04,347 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 20:31:04,365 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 20:31:04,370 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 20:31:04,431 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:04,431 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:04,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:04,442 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:04,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:04,459 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:06,590 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:06,593 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:06,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:06,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:06,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:06,593 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:06,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:06,593 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:06,593 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:06,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2019-11-28 20:31:06,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:06,594 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:06,595 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 20:31:06,610 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 20:31:06,615 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 20:31:06,697 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:06,698 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:06,704 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 20:31:06,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:06,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:06,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:06,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:06,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:06,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:06,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:31:06,712 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:06,715 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:31:06,716 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 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:06,722 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:31:06,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:31:06,723 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:06,723 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-28 20:31:06,725 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:31:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:06,741 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:06,742 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:06,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:06,750 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:31:06,769 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 20:31:06,770 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 20:31:06,807 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 54 transitions. Complement of second has 6 states. [2019-11-28 20:31:06,809 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 20:31:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:31:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 20:31:06,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-28 20:31:06,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:06,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-28 20:31:06,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:06,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-28 20:31:06,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:06,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2019-11-28 20:31:06,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:31:06,815 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 45 transitions. [2019-11-28 20:31:06,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-28 20:31:06,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-28 20:31:06,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2019-11-28 20:31:06,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:31:06,817 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-28 20:31:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2019-11-28 20:31:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2019-11-28 20:31:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 20:31:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-28 20:31:06,823 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 20:31:06,823 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 20:31:06,823 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 20:31:06,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2019-11-28 20:31:06,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:31:06,826 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:06,826 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:06,826 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 20:31:06,827 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:31:06,827 INFO L794 eck$LassoCheckResult]: Stem: 703#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 704#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 722#L17 assume !(0 == main_~y~0); 721#L21 assume !(main_~y~0 < 0); 720#L21-2 assume main_~xtmp~0 > 0; 719#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 718#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 716#L26-3 main_~y~0 := main_~xtmp~0; 712#L25-1 main_~x~0 := main_~tmp~0; 705#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 706#L17 assume !(0 == main_~y~0); 699#L21 assume !(main_~y~0 < 0); 700#L21-2 assume main_~xtmp~0 > 0; 713#L26-2 [2019-11-28 20:31:06,827 INFO L796 eck$LassoCheckResult]: Loop: 713#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 713#L26-2 [2019-11-28 20:31:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -521667071, now seen corresponding path program 3 times [2019-11-28 20:31:06,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:06,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563877683] [2019-11-28 20:31:06,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:06,862 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2019-11-28 20:31:06,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:06,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919824108] [2019-11-28 20:31:06,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:06,874 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190016, now seen corresponding path program 4 times [2019-11-28 20:31:06,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:06,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470609762] [2019-11-28 20:31:06,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:06,910 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:07,008 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:07,009 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:07,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:07,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:07,009 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:31:07,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:07,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:07,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2019-11-28 20:31:07,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:07,010 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:07,012 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 20:31:07,015 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 20:31:07,027 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 20:31:07,029 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 20:31:07,038 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 20:31:07,041 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 20:31:07,124 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:07,125 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:07,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:31:07,137 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:07,137 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:07,144 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:07,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:31:07,271 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:07,274 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:07,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:07,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:07,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:07,274 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:07,274 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:07,275 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:07,275 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2019-11-28 20:31:07,275 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:07,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:07,276 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 20:31:07,279 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 20:31:07,281 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 20:31:07,284 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 20:31:07,290 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 20:31:07,293 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 20:31:07,377 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:07,377 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:07,388 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 20:31:07,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:07,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:07,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:07,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:07,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:07,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:07,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,395 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:07,407 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 20:31:07,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:07,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:07,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:07,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:07,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:07,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:07,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,413 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 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,420 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 20:31:07,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:07,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:07,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:07,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:07,424 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:07,424 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:07,428 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 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,434 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 20:31:07,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:07,435 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:07,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:07,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:07,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:07,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:07,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:31:07,439 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 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,445 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 20:31:07,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:07,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:07,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:07,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:07,448 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:07,448 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:07,456 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 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,461 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 20:31:07,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:07,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:07,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:07,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:07,466 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:07,466 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:07,472 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:07,491 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-28 20:31:07,491 INFO L444 ModelExtractionUtils]: 5 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:07,498 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:07,501 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-28 20:31:07,502 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:07,502 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~tmp~0 + 2*ULTIMATE.start_main_~xtmp~0 Supporting invariants [1*ULTIMATE.start_main_~tmp~0 - 1 >= 0, 1*ULTIMATE.start_main_~y~0 - 1 >= 0] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:31:07,517 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2019-11-28 20:31:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:07,547 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:31:07,548 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:07,567 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:31:07,567 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:07,567 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 20:31:07,568 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:31:07,568 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 20:31:07,618 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2019-11-28 20:31:07,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:31:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 20:31:07,620 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-28 20:31:07,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:07,621 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:31:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:07,656 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:31:07,657 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:07,678 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:31:07,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:07,679 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 20:31:07,679 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:31:07,679 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 20:31:07,717 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2019-11-28 20:31:07,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:31:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 20:31:07,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-28 20:31:07,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:07,720 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:31:07,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:07,754 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:31:07,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:07,773 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:31:07,773 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:07,773 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 20:31:07,774 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:31:07,774 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 20:31:07,808 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 39 transitions. Complement of second has 5 states. [2019-11-28 20:31:07,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:31:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-28 20:31:07,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-28 20:31:07,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:07,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-28 20:31:07,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:07,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2019-11-28 20:31:07,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:07,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2019-11-28 20:31:07,812 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:31:07,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-28 20:31:07,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:31:07,813 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:31:07,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:31:07,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:31:07,813 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:07,813 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:07,813 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:07,813 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 20:31:07,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:31:07,813 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:31:07,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:31:07,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:31:07 BoogieIcfgContainer [2019-11-28 20:31:07,821 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:31:07,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:31:07,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:31:07,821 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:31:07,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:54" (3/4) ... [2019-11-28 20:31:07,825 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:31:07,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:31:07,829 INFO L168 Benchmark]: Toolchain (without parser) took 13766.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 953.7 MB in the beginning and 908.1 MB in the end (delta: 45.6 MB). Peak memory consumption was 243.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:07,829 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:31:07,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.20 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:07,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:07,831 INFO L168 Benchmark]: Boogie Preprocessor took 19.24 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 20:31:07,832 INFO L168 Benchmark]: RCFGBuilder took 255.26 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:07,833 INFO L168 Benchmark]: BuchiAutomizer took 13147.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 908.1 MB in the end (delta: 193.6 MB). Peak memory consumption was 262.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:07,834 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 1.2 GB. Free memory is still 908.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:31:07,837 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.20 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 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 89.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 255.26 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 13147.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 908.1 MB in the end (delta: 193.6 MB). Peak memory consumption was 262.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.74 ms. Allocated memory is still 1.2 GB. Free memory is still 908.1 MB. 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 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function 2 * xtmp + 1 and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function -2 * y + tmp + 2 * xtmp and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.0s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 11.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 56 SDtfs, 92 SDslu, 15 SDs, 0 SdLazy, 187 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf96 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf90 smp100 dnf100 smp100 tf103 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...