./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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 0.1.24-30f4e4a [2019-11-28 02:58:23,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:58:23,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:58:23,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:58:23,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:58:23,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:58:23,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:58:23,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:58:23,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:58:23,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:58:23,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:58:23,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:58:23,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:58:23,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:58:23,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:58:23,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:58:23,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:58:23,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:58:23,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:58:23,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:58:23,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:58:23,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:58:23,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:58:23,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:58:23,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:58:23,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:58:23,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:58:23,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:58:23,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:58:23,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:58:23,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:58:23,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:58:23,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:58:23,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:58:23,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:58:23,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:58:23,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:58:23,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:58:23,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:58:23,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:58:23,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:58:23,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:58:23,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:58:23,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:58:23,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:58:23,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:58:23,829 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:58:23,829 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:58:23,830 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:58:23,830 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:58:23,830 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:58:23,830 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:58:23,831 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:58:23,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:58:23,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:58:23,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:58:23,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:58:23,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:58:23,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:58:23,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:58:23,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:58:23,833 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:58:23,834 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:58:23,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:58:23,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:58:23,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:58:23,835 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:58:23,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:58:23,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:58:23,835 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:58:23,837 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:58:23,837 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 02:58:24,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:58:24,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:58:24,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:58:24,158 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:58:24,159 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:58:24,160 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD3.c [2019-11-28 02:58:24,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d232d78d7/cdcf38234fec49b5aa6891b582cd3324/FLAG40bd9ee97 [2019-11-28 02:58:24,677 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:58:24,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD3.c [2019-11-28 02:58:24,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d232d78d7/cdcf38234fec49b5aa6891b582cd3324/FLAG40bd9ee97 [2019-11-28 02:58:25,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d232d78d7/cdcf38234fec49b5aa6891b582cd3324 [2019-11-28 02:58:25,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:58:25,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:58:25,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:25,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:58:25,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:58:25,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576f60af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25, skipping insertion in model container [2019-11-28 02:58:25,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:58:25,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:58:25,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:25,314 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:58:25,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:25,351 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:58:25,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25 WrapperNode [2019-11-28 02:58:25,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:25,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:25,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:58:25,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:58:25,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:25,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:58:25,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:58:25,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:58:25,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2019-11-28 02:58:25,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:58:25,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:58:25,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:58:25,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:58:25,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:25,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:58:25,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:58:25,718 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:58:25,718 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 02:58:25,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:25 BoogieIcfgContainer [2019-11-28 02:58:25,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:58:25,720 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:58:25,721 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:58:25,724 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:58:25,725 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:25,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:25" (1/3) ... [2019-11-28 02:58:25,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26c3828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:25, skipping insertion in model container [2019-11-28 02:58:25,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:25,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (2/3) ... [2019-11-28 02:58:25,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26c3828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:25, skipping insertion in model container [2019-11-28 02:58:25,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:25,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:25" (3/3) ... [2019-11-28 02:58:25,730 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD3.c [2019-11-28 02:58:25,799 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:58:25,799 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:58:25,799 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:58:25,799 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:58:25,799 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:58:25,800 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:58:25,800 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:58:25,800 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:58:25,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 02:58:25,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 02:58:25,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:25,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:25,867 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:25,868 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:58:25,868 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:58:25,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-28 02:58:25,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 02:58:25,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:25,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:25,872 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:25,872 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:58:25,880 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-2true [2019-11-28 02:58:25,881 INFO L796 eck$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 02:58:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:58:25,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:25,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829769507] [2019-11-28 02:58:25,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:25,985 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1187012529, now seen corresponding path program 1 times [2019-11-28 02:58:25,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:25,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010969661] [2019-11-28 02:58:25,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:26,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010969661] [2019-11-28 02:58:26,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:58:26,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:58:26,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847167582] [2019-11-28 02:58:26,064 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 02:58:26,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:58:26,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:58:26,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:58:26,082 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-28 02:58:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:58:26,131 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-28 02:58:26,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:58:26,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2019-11-28 02:58:26,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 02:58:26,139 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2019-11-28 02:58:26,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 02:58:26,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-28 02:58:26,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-28 02:58:26,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:58:26,141 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 02:58:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-28 02:58:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 02:58:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 02:58:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-28 02:58:26,164 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 02:58:26,164 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 02:58:26,164 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:58:26,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-28 02:58:26,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-28 02:58:26,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:26,166 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:26,166 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:26,166 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:26,166 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 02:58:26,167 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 02:58:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:26,167 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-28 02:58:26,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:26,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518363804] [2019-11-28 02:58:26,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,175 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:26,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:26,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1817939337, now seen corresponding path program 1 times [2019-11-28 02:58:26,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:26,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64130571] [2019-11-28 02:58:26,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:26,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64130571] [2019-11-28 02:58:26,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:58:26,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:58:26,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713150659] [2019-11-28 02:58:26,206 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 02:58:26,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:58:26,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:58:26,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:58:26,207 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-28 02:58:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:58:26,232 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-28 02:58:26,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:58:26,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-28 02:58:26,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-28 02:58:26,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-11-28 02:58:26,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-28 02:58:26,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 02:58:26,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-28 02:58:26,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:58:26,236 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 02:58:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-28 02:58:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2019-11-28 02:58:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 02:58:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-28 02:58:26,238 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 02:58:26,238 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 02:58:26,238 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:58:26,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-11-28 02:58:26,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 02:58:26,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:26,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:26,240 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:26,240 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:26,240 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L13-2 [2019-11-28 02:58:26,240 INFO L796 eck$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 02:58:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-28 02:58:26,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:26,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051897791] [2019-11-28 02:58:26,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,248 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:26,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1818401082, now seen corresponding path program 1 times [2019-11-28 02:58:26,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:26,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323980346] [2019-11-28 02:58:26,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash 669111751, now seen corresponding path program 1 times [2019-11-28 02:58:26,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:26,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222979971] [2019-11-28 02:58:26,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:26,284 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:26,383 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:26,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:26,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:26,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:26,384 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:26,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:26,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:26,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:26,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2019-11-28 02:58:26,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:26,386 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:26,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:26,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:26,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:26,551 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:26,551 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:26,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:26,560 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:26,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:26,572 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 02:58:26,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:26,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:26,595 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:26,595 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) [2019-11-28 02:58:26,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:26,613 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:26,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:26,646 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 02:58:30,200 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:30,202 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:30,202 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:30,203 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:30,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:30,203 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:30,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:30,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:30,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:30,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2019-11-28 02:58:30,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:30,204 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:30,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,320 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:30,326 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 02:58:30,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:30,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:30,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:30,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:30,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:30,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:30,344 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:58:30,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:30,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:30,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:30,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:30,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:30,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:30,390 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:30,392 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:30,401 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:30,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:30,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:30,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:30,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:30,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:30,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:30,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:30,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:30,440 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:30,448 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:30,448 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 02:58:30,460 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:30,461 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:30,461 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:30,462 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 02:58:30,468 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:30,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:58:30,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:30,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:58:30,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:30,589 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-28 02:58:30,590 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-11-28 02:58:30,681 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 02:58:30,681 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 02:58:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 02:58:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-28 02:58:30,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 7 letters. [2019-11-28 02:58:30,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:30,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 7 letters. [2019-11-28 02:58:30,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:30,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 14 letters. [2019-11-28 02:58:30,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:30,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2019-11-28 02:58:30,689 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 02:58:30,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2019-11-28 02:58:30,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 02:58:30,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-28 02:58:30,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2019-11-28 02:58:30,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:30,691 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 02:58:30,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2019-11-28 02:58:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-28 02:58:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 02:58:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-28 02:58:30,694 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-28 02:58:30,694 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-28 02:58:30,694 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:58:30,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2019-11-28 02:58:30,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 02:58:30,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:30,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:30,696 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:58:30,696 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:58:30,697 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 159#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 161#L17 assume !(0 == main_~y~0); 174#L21 assume !(main_~y~0 < 0); 173#L21-2 assume main_~xtmp~0 > 0; 169#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2019-11-28 02:58:30,697 INFO L796 eck$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 02:58:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:30,697 INFO L82 PathProgramCache]: Analyzing trace with hash 925834904, now seen corresponding path program 1 times [2019-11-28 02:58:30,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:30,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496687948] [2019-11-28 02:58:30,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:30,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:30,714 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2019-11-28 02:58:30,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:30,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69244667] [2019-11-28 02:58:30,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:30,725 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889015, now seen corresponding path program 2 times [2019-11-28 02:58:30,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:30,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209400455] [2019-11-28 02:58:30,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:30,758 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:30,849 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:30,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:30,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:30,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:30,849 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:30,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:30,850 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:30,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:30,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2019-11-28 02:58:30,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:30,850 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:30,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:30,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:30,968 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 02:58:30,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:30,983 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 02:58:30,988 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:30,988 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 02:58:30,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:30,998 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 02:58:31,002 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:31,003 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 02:58:31,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:31,019 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 02:58:31,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:31,044 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:31,278 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:31,282 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:31,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:31,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:31,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:31,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:31,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:31,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:31,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:31,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2019-11-28 02:58:31,286 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:31,286 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:31,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:31,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:31,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:31,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:31,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:31,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:31,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:31,420 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 02:58:31,433 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:31,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:31,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:31,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:31,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:31,440 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:31,440 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:31,446 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) [2019-11-28 02:58:31,461 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 02:58:31,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:31,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:31,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:31,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:31,475 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:31,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:31,487 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:31,497 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:58:31,497 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 02:58:31,509 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 02:58:31,513 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-28 02:58:31,513 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:31,514 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] [2019-11-28 02:58:31,521 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2019-11-28 02:58:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:31,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:58:31,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:31,586 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:58:31,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:31,587 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 02:58:31,588 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 02:58:31,645 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 02:58:31,645 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 02:58:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:58:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 02:58:31,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-28 02:58:31,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:31,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:58:31,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:31,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:58:31,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:31,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2019-11-28 02:58:31,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 02:58:31,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2019-11-28 02:58:31,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 02:58:31,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-28 02:58:31,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2019-11-28 02:58:31,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:31,653 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-28 02:58:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2019-11-28 02:58:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-28 02:58:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:58:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-11-28 02:58:31,660 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-28 02:58:31,660 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-28 02:58:31,660 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:58:31,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2019-11-28 02:58:31,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-28 02:58:31,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:31,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:31,662 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:31,662 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:31,662 INFO L794 eck$LassoCheckResult]: Stem: 260#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 261#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 275#L17 assume !(0 == main_~y~0); 278#L21 assume !(main_~y~0 < 0); 277#L21-2 assume main_~xtmp~0 > 0; 276#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 274#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2019-11-28 02:58:31,662 INFO L796 eck$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 02:58:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:31,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 1 times [2019-11-28 02:58:31,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:31,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975824979] [2019-11-28 02:58:31,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:31,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1776384388, now seen corresponding path program 2 times [2019-11-28 02:58:31,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:31,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045048966] [2019-11-28 02:58:31,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:31,718 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:31,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190014, now seen corresponding path program 1 times [2019-11-28 02:58:31,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:31,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793960718] [2019-11-28 02:58:31,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:31,814 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 02:58:31,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793960718] [2019-11-28 02:58:31,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664401503] [2019-11-28 02:58:31,815 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) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:58:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:31,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:31,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:31,889 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 02:58:31,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:58:31,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-28 02:58:31,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931327524] [2019-11-28 02:58:31,998 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:31,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:31,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:31,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:31,999 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:31,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:31,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:31,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:31,999 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2019-11-28 02:58:31,999 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:31,999 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:32,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:32,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:32,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:32,156 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:32,157 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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:32,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:32,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:32,166 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:32,167 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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:32,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:32,217 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:32,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:32,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:34,673 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:34,677 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:34,677 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:34,677 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:34,677 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:34,677 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:34,677 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:34,677 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:34,678 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:34,678 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2019-11-28 02:58:34,678 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:34,678 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:34,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:34,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:34,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:34,771 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:34,772 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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:34,787 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:34,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:34,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:34,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:34,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:34,794 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:34,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:58:34,799 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:34,805 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:34,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:34,807 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:34,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:34,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:34,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:34,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:34,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:34,813 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:34,821 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:34,821 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 02:58:34,830 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:34,830 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:34,830 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:34,831 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 02:58:34,834 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 02:58:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:34,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:58:34,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:34,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:58:34,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:34,898 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:34,898 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-28 02:58:34,946 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 02:58:34,946 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 02:58:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-28 02:58:34,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 7 letters. [2019-11-28 02:58:34,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:34,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 7 letters. [2019-11-28 02:58:34,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:34,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 14 letters. [2019-11-28 02:58:34,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:34,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 72 transitions. [2019-11-28 02:58:34,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 02:58:34,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 53 states and 67 transitions. [2019-11-28 02:58:34,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-28 02:58:34,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-28 02:58:34,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 67 transitions. [2019-11-28 02:58:34,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:34,952 INFO L688 BuchiCegarLoop]: Abstraction has 53 states and 67 transitions. [2019-11-28 02:58:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 67 transitions. [2019-11-28 02:58:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2019-11-28 02:58:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-28 02:58:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2019-11-28 02:58:34,957 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2019-11-28 02:58:34,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:58:34,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:58:34,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:58:34,958 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 8 states. [2019-11-28 02:58:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:58:35,092 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-11-28 02:58:35,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:58:35,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2019-11-28 02:58:35,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 02:58:35,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 31 states and 37 transitions. [2019-11-28 02:58:35,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-28 02:58:35,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-28 02:58:35,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2019-11-28 02:58:35,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:35,096 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-28 02:58:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2019-11-28 02:58:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-11-28 02:58:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:58:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-28 02:58:35,099 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-28 02:58:35,099 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-28 02:58:35,099 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 02:58:35,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2019-11-28 02:58:35,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 02:58:35,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:35,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:35,101 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:35,101 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:35,101 INFO L794 eck$LassoCheckResult]: Stem: 563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 564#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 580#L17 assume !(0 == main_~y~0); 579#L21 assume !(main_~y~0 < 0); 578#L21-2 assume main_~xtmp~0 > 0; 577#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 576#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2019-11-28 02:58:35,101 INFO L796 eck$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 02:58:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 2 times [2019-11-28 02:58:35,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:35,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656759603] [2019-11-28 02:58:35,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:35,112 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:35,113 INFO L82 PathProgramCache]: Analyzing trace with hash -766658727, now seen corresponding path program 1 times [2019-11-28 02:58:35,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:35,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084333037] [2019-11-28 02:58:35,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:35,123 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1189119455, now seen corresponding path program 2 times [2019-11-28 02:58:35,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:35,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227745025] [2019-11-28 02:58:35,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:35,142 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:35,184 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:35,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:35,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:35,184 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:35,184 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:35,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:35,185 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:35,185 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:35,185 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2019-11-28 02:58:35,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:35,185 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:35,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:35,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:35,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:35,264 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:35,264 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 02:58:35,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:35,274 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 02:58:35,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:35,293 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 02:58:37,418 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:37,421 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:37,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:37,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:37,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:37,421 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:37,421 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:37,421 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:37,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:37,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2019-11-28 02:58:37,422 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:37,422 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:37,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,512 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:37,512 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 02:58:37,517 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:37,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:37,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:37,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:37,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:37,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:37,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:37,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:37,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:37,533 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:37,534 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) [2019-11-28 02:58:37,538 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:37,538 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:37,538 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:37,539 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 02:58:37,541 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:37,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:58:37,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:37,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:58:37,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:37,600 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 02:58:37,600 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:37,601 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:37,642 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 02:58:37,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:58:37,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-28 02:58:37,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:37,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-28 02:58:37,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:37,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-28 02:58:37,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:37,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2019-11-28 02:58:37,647 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:58:37,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 45 transitions. [2019-11-28 02:58:37,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-28 02:58:37,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-28 02:58:37,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2019-11-28 02:58:37,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:37,649 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-28 02:58:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2019-11-28 02:58:37,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2019-11-28 02:58:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 02:58:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-28 02:58:37,651 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 02:58:37,652 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-28 02:58:37,652 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 02:58:37,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2019-11-28 02:58:37,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:58:37,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:37,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:37,653 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 02:58:37,653 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:58:37,653 INFO L794 eck$LassoCheckResult]: Stem: 703#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 704#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 722#L17 assume !(0 == main_~y~0); 721#L21 assume !(main_~y~0 < 0); 720#L21-2 assume main_~xtmp~0 > 0; 719#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 718#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 716#L26-3 main_~y~0 := main_~xtmp~0; 712#L25-1 main_~x~0 := main_~tmp~0; 705#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 706#L17 assume !(0 == main_~y~0); 699#L21 assume !(main_~y~0 < 0); 700#L21-2 assume main_~xtmp~0 > 0; 713#L26-2 [2019-11-28 02:58:37,654 INFO L796 eck$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 02:58:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash -521667071, now seen corresponding path program 3 times [2019-11-28 02:58:37,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:37,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411125620] [2019-11-28 02:58:37,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:37,670 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2019-11-28 02:58:37,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:37,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129046862] [2019-11-28 02:58:37,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:37,675 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:37,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190016, now seen corresponding path program 4 times [2019-11-28 02:58:37,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:37,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51458169] [2019-11-28 02:58:37,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:37,692 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:37,777 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:37,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:37,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:37,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:37,778 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:37,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:37,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:37,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:37,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2019-11-28 02:58:37,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:37,779 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:37,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:37,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:37,882 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 02:58:37,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:37,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:37,890 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:37,890 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 02:58:37,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:37,902 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 02:58:37,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:37,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:38,029 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:38,031 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:38,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:38,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:38,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:38,031 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:38,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:38,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:38,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:38,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2019-11-28 02:58:38,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:38,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:38,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:38,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:38,038 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 02:58:38,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:38,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:38,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:38,123 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:38,123 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 02:58:38,133 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:38,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:38,135 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:38,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:38,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:38,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:38,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:38,136 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 02:58:38,139 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 02:58:38,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:38,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:38,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:38,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:38,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:38,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:38,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:38,155 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 02:58:38,157 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) [2019-11-28 02:58:38,165 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:38,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:38,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:38,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:38,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:38,170 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:38,171 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:38,175 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) [2019-11-28 02:58:38,183 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:38,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:38,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:38,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:38,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:38,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:38,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:38,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:38,188 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) [2019-11-28 02:58:38,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:38,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:38,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:38,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:38,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:38,200 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:38,200 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:38,203 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 02:58:38,210 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:38,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:38,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:38,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:38,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:38,214 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:38,214 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:58:38,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:38,234 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-28 02:58:38,234 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) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:38,239 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:38,242 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-28 02:58:38,242 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:38,242 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_~y~0 - 1 >= 0, 1*ULTIMATE.start_main_~tmp~0 - 1 >= 0] [2019-11-28 02:58:38,248 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2019-11-28 02:58:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:38,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:38,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:38,307 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:38,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:38,308 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 02:58:38,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 02:58:38,355 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 02:58:38,357 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 02:58:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:58:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 02:58:38,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-28 02:58:38,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:38,358 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:38,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:38,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:38,415 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:38,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:38,416 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 02:58:38,416 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 02:58:38,445 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 02:58:38,447 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 02:58:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:58:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-28 02:58:38,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-28 02:58:38,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:38,448 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:38,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:38,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:38,501 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:38,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:38,502 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 02:58:38,502 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 02:58:38,536 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 02:58:38,538 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 02:58:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:58:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-28 02:58:38,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-28 02:58:38,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:38,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-28 02:58:38,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:38,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2019-11-28 02:58:38,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:38,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2019-11-28 02:58:38,541 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:58:38,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-28 02:58:38,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:58:38,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:58:38,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:58:38,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:58:38,542 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:38,542 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:38,542 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:38,542 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 02:58:38,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:58:38,542 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:58:38,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:58:38,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:38 BoogieIcfgContainer [2019-11-28 02:58:38,549 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:58:38,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:58:38,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:58:38,550 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:58:38,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:25" (3/4) ... [2019-11-28 02:58:38,555 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:58:38,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:58:38,557 INFO L168 Benchmark]: Toolchain (without parser) took 13503.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 960.4 MB in the beginning and 917.3 MB in the end (delta: 43.1 MB). Peak memory consumption was 256.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:38,558 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:38,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.66 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:38,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:38,560 INFO L168 Benchmark]: Boogie Preprocessor took 20.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:38,561 INFO L168 Benchmark]: RCFGBuilder took 249.16 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:38,562 INFO L168 Benchmark]: BuchiAutomizer took 12829.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 917.3 MB in the end (delta: 212.7 MB). Peak memory consumption was 273.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:38,562 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 1.2 GB. Free memory is still 917.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:38,566 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 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.66 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.93 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 249.16 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 12829.02 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 917.3 MB in the end (delta: 212.7 MB). Peak memory consumption was 273.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.94 ms. Allocated memory is still 1.2 GB. Free memory is still 917.3 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 12.7s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 11.5s. 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: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...