./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: 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 /storage/repos/svcomp/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 76260ed82768318ee6f3ac3cb9cfff5a60080963 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 23:09:07,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 23:09:07,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 23:09:07,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 23:09:07,065 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 23:09:07,066 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 23:09:07,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 23:09:07,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 23:09:07,073 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 23:09:07,074 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 23:09:07,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 23:09:07,077 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 23:09:07,078 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 23:09:07,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 23:09:07,082 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 23:09:07,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 23:09:07,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 23:09:07,086 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 23:09:07,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 23:09:07,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 23:09:07,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 23:09:07,093 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 23:09:07,095 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 23:09:07,096 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 23:09:07,096 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 23:09:07,097 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 23:09:07,098 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 23:09:07,099 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 23:09:07,100 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 23:09:07,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 23:09:07,102 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 23:09:07,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 23:09:07,103 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 23:09:07,103 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 23:09:07,104 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 23:09:07,105 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 23:09:07,105 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-01-01 23:09:07,124 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 23:09:07,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 23:09:07,126 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 23:09:07,126 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 23:09:07,126 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 23:09:07,127 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 23:09:07,127 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 23:09:07,127 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 23:09:07,127 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 23:09:07,127 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 23:09:07,128 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 23:09:07,128 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 23:09:07,128 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 23:09:07,128 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 23:09:07,128 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 23:09:07,129 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 23:09:07,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 23:09:07,129 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 23:09:07,129 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 23:09:07,129 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 23:09:07,130 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 23:09:07,130 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 23:09:07,130 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 23:09:07,130 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 23:09:07,130 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 23:09:07,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 23:09:07,133 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 23:09:07,133 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 23:09:07,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 23:09:07,134 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 23:09:07,134 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 23:09:07,135 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 23:09:07,135 INFO L133 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76260ed82768318ee6f3ac3cb9cfff5a60080963 [2019-01-01 23:09:07,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 23:09:07,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 23:09:07,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 23:09:07,227 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 23:09:07,228 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 23:09:07,228 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2019-01-01 23:09:07,297 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b2fee6e2/3c4456dc579b4b489f41cdb879c45960/FLAG86a89c1f4 [2019-01-01 23:09:07,751 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 23:09:07,751 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2019-01-01 23:09:07,758 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b2fee6e2/3c4456dc579b4b489f41cdb879c45960/FLAG86a89c1f4 [2019-01-01 23:09:08,094 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b2fee6e2/3c4456dc579b4b489f41cdb879c45960 [2019-01-01 23:09:08,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 23:09:08,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 23:09:08,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 23:09:08,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 23:09:08,106 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 23:09:08,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556facdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08, skipping insertion in model container [2019-01-01 23:09:08,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 23:09:08,138 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 23:09:08,314 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 23:09:08,319 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 23:09:08,337 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 23:09:08,351 INFO L195 MainTranslator]: Completed translation [2019-01-01 23:09:08,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08 WrapperNode [2019-01-01 23:09:08,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 23:09:08,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 23:09:08,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 23:09:08,353 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 23:09:08,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 23:09:08,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 23:09:08,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 23:09:08,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 23:09:08,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (1/1) ... [2019-01-01 23:09:08,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 23:09:08,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 23:09:08,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 23:09:08,420 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 23:09:08,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (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 [2019-01-01 23:09:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 23:09:08,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 23:09:08,727 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 23:09:08,728 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-01 23:09:08,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 11:09:08 BoogieIcfgContainer [2019-01-01 23:09:08,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 23:09:08,729 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 23:09:08,729 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 23:09:08,733 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 23:09:08,734 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 23:09:08,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 11:09:08" (1/3) ... [2019-01-01 23:09:08,735 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e1279ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 11:09:08, skipping insertion in model container [2019-01-01 23:09:08,735 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 23:09:08,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 11:09:08" (2/3) ... [2019-01-01 23:09:08,736 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e1279ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 11:09:08, skipping insertion in model container [2019-01-01 23:09:08,736 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 23:09:08,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 11:09:08" (3/3) ... [2019-01-01 23:09:08,738 INFO L375 chiAutomizerObserver]: Analyzing ICFG gr2006_true-unreach-call_true-termination.c.i [2019-01-01 23:09:08,800 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 23:09:08,801 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 23:09:08,801 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 23:09:08,801 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 23:09:08,801 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 23:09:08,801 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 23:09:08,802 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 23:09:08,802 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 23:09:08,802 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 23:09:08,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-01-01 23:09:08,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:08,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:09:08,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:09:08,853 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 23:09:08,853 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 23:09:08,853 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 23:09:08,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-01-01 23:09:08,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:08,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:09:08,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:09:08,856 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 23:09:08,856 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 23:09:08,864 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 7#L14-2true [2019-01-01 23:09:08,864 INFO L796 eck$LassoCheckResult]: Loop: 7#L14-2true assume !false; 3#L15true assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 10#L15-2true assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 7#L14-2true [2019-01-01 23:09:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 23:09:08,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:08,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:08,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:08,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:08,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 39825, now seen corresponding path program 1 times [2019-01-01 23:09:08,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:08,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:08,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:08,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:08,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:08,993 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2019-01-01 23:09:08,993 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:08,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:08,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:08,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:08,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:09,219 WARN L181 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-01-01 23:09:09,246 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 23:09:09,247 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 23:09:09,248 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 23:09:09,248 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 23:09:09,249 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 23:09:09,249 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:09,249 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 23:09:09,249 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 23:09:09,249 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2019-01-01 23:09:09,250 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 23:09:09,250 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 23:09:09,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,528 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 23:09:09,529 INFO L412 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:09,540 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:09,540 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2019-01-01 23:09:09,567 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 23:09:09,568 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 23:09:09,594 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 23:09:09,596 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 23:09:09,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 23:09:09,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 23:09:09,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 23:09:09,596 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 23:09:09,597 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:09,597 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 23:09:09,597 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 23:09:09,597 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2019-01-01 23:09:09,597 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 23:09:09,597 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 23:09:09,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:09,956 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 23:09:09,961 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 23:09:09,963 INFO L122 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 [2019-01-01 23:09:09,965 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 23:09:09,965 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 23:09:09,966 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 23:09:09,966 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 23:09:09,966 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 23:09:09,968 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 23:09:09,969 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 23:09:09,976 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 23:09:09,985 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 23:09:09,986 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-01 23:09:09,988 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 23:09:09,988 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 23:09:09,989 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 23:09:09,990 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 99 Supporting invariants [] [2019-01-01 23:09:09,991 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 23:09:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:10,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:10,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:10,166 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-01 23:09:10,167 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2019-01-01 23:09:10,397 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 7 states. [2019-01-01 23:09:10,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-01-01 23:09:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-01 23:09:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2019-01-01 23:09:10,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 3 letters. [2019-01-01 23:09:10,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:10,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 4 letters. Loop has 3 letters. [2019-01-01 23:09:10,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:10,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 6 letters. [2019-01-01 23:09:10,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:10,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2019-01-01 23:09:10,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:10,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 11 states and 14 transitions. [2019-01-01 23:09:10,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-01-01 23:09:10,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-01-01 23:09:10,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-01-01 23:09:10,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 23:09:10,430 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-01-01 23:09:10,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-01-01 23:09:10,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-01-01 23:09:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-01 23:09:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-01-01 23:09:10,467 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-01-01 23:09:10,468 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-01-01 23:09:10,468 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 23:09:10,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-01-01 23:09:10,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:10,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:09:10,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:09:10,471 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 23:09:10,471 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 23:09:10,472 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 103#L14-2 assume !false; 97#L15 [2019-01-01 23:09:10,473 INFO L796 eck$LassoCheckResult]: Loop: 97#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 98#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 104#L14-2 assume !false; 97#L15 [2019-01-01 23:09:10,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:10,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-01 23:09:10,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:10,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:10,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:10,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:10,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:10,489 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 1 times [2019-01-01 23:09:10,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:10,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:10,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:10,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:10,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:10,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash 29865658, now seen corresponding path program 1 times [2019-01-01 23:09:10,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:10,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:10,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:10,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:10,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:10,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 23:09:10,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-01 23:09:10,598 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 23:09:10,598 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 23:09:10,598 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 23:09:10,599 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 23:09:10,599 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 23:09:10,599 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:10,599 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 23:09:10,599 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 23:09:10,599 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2019-01-01 23:09:10,599 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 23:09:10,600 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 23:09:10,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:10,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:10,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:10,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:10,774 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 23:09:10,774 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:10,779 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:10,779 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 23:09:10,785 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 23:09:10,785 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:10,807 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:10,807 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2019-01-01 23:09:10,835 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 23:09:10,835 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 23:09:10,858 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 23:09:10,858 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=50} Honda state: {ULTIMATE.start_main_~x~0=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] 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) [2019-01-01 23:09:10,897 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:10,898 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:10,911 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 23:09:10,911 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2019-01-01 23:09:10,940 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:10,941 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2019-01-01 23:09:10,964 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 23:09:10,964 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 23:09:11,005 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 23:09:11,013 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 23:09:11,013 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 23:09:11,013 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 23:09:11,014 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 23:09:11,014 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 23:09:11,014 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:11,014 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 23:09:11,014 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 23:09:11,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2019-01-01 23:09:11,014 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 23:09:11,015 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 23:09:11,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:11,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:11,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:11,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:11,407 WARN L181 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-01-01 23:09:11,409 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 23:09:11,409 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 23:09:11,411 INFO L122 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 [2019-01-01 23:09:11,413 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 23:09:11,413 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 23:09:11,414 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 23:09:11,414 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 23:09:11,414 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 23:09:11,415 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 23:09:11,416 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 23:09:11,418 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 23:09:11,419 INFO L122 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 [2019-01-01 23:09:11,419 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 23:09:11,419 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 23:09:11,420 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 23:09:11,420 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 23:09:11,420 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 23:09:11,421 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 23:09:11,421 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 23:09:11,440 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 23:09:11,441 INFO L122 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 [2019-01-01 23:09:11,442 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 23:09:11,442 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 23:09:11,443 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 23:09:11,443 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 23:09:11,443 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 23:09:11,448 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 23:09:11,448 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 23:09:11,450 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 23:09:11,450 INFO L122 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 [2019-01-01 23:09:11,453 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 23:09:11,453 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 23:09:11,453 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 23:09:11,453 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 23:09:11,456 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 23:09:11,457 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 23:09:11,457 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 23:09:11,468 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 23:09:11,474 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 23:09:11,475 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-01 23:09:11,475 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 23:09:11,475 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 23:09:11,475 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 23:09:11,476 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-01-01 23:09:11,476 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 23:09:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:11,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:11,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:11,862 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 [2019-01-01 23:09:11,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-01-01 23:09:12,030 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 29 transitions. Complement of second has 7 states. [2019-01-01 23:09:12,032 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 [2019-01-01 23:09:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-01 23:09:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-01-01 23:09:12,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2019-01-01 23:09:12,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-01 23:09:12,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2019-01-01 23:09:12,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2019-01-01 23:09:12,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:12,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 15 states and 19 transitions. [2019-01-01 23:09:12,039 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-01-01 23:09:12,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-01 23:09:12,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2019-01-01 23:09:12,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 23:09:12,040 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-01-01 23:09:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2019-01-01 23:09:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-01-01 23:09:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-01-01 23:09:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-01-01 23:09:12,045 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-01-01 23:09:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 23:09:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 23:09:12,052 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 3 states. [2019-01-01 23:09:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 23:09:12,120 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-01-01 23:09:12,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 23:09:12,121 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-01-01 23:09:12,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:12,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-01-01 23:09:12,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-01-01 23:09:12,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-01 23:09:12,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-01-01 23:09:12,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 23:09:12,124 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-01-01 23:09:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-01-01 23:09:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-01-01 23:09:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-01 23:09:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-01-01 23:09:12,127 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-01-01 23:09:12,127 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-01-01 23:09:12,127 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-01 23:09:12,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-01-01 23:09:12,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 23:09:12,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 23:09:12,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 23:09:12,129 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-01-01 23:09:12,129 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 23:09:12,129 INFO L794 eck$LassoCheckResult]: Stem: 202#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 203#L14-2 assume !false; 200#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 201#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 208#L14-2 assume !false; 198#L15 [2019-01-01 23:09:12,129 INFO L796 eck$LassoCheckResult]: Loop: 198#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 199#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 206#L14-2 assume !false; 198#L15 [2019-01-01 23:09:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 2 times [2019-01-01 23:09:12,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:12,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:12,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:12,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:12,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:12,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:12,140 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 2 times [2019-01-01 23:09:12,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:12,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:12,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:12,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 23:09:12,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 23:09:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash 612343980, now seen corresponding path program 1 times [2019-01-01 23:09:12,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 23:09:12,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 23:09:12,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:12,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 23:09:12,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 23:09:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:12,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 23:09:12,187 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-01 23:09:12,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 23:09:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:12,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 23:09:12,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-01 23:09:12,310 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 23:09:12,310 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 23:09:12,310 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 23:09:12,310 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 23:09:12,311 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 23:09:12,311 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:12,311 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 23:09:12,311 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 23:09:12,311 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2019-01-01 23:09:12,311 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 23:09:12,311 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 23:09:12,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,415 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 23:09:12,415 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:12,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:12,419 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 23:09:12,423 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 23:09:12,423 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:12,447 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 23:09:12,448 INFO L163 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:12,471 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 23:09:12,471 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 23:09:12,512 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 23:09:12,514 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 23:09:12,514 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 23:09:12,515 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 23:09:12,515 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 23:09:12,515 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 23:09:12,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 23:09:12,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 23:09:12,515 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 23:09:12,516 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2019-01-01 23:09:12,516 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 23:09:12,516 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 23:09:12,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 23:09:12,608 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 23:09:12,608 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 23:09:12,608 INFO L122 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 [2019-01-01 23:09:12,609 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 23:09:12,610 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 23:09:12,610 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 23:09:12,610 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 23:09:12,610 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 23:09:12,611 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 23:09:12,611 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 23:09:12,616 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 23:09:12,619 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 23:09:12,620 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-01 23:09:12,620 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 23:09:12,620 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 23:09:12,620 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 23:09:12,621 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-01-01 23:09:12,621 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 23:09:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:12,758 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 [2019-01-01 23:09:12,758 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-01-01 23:09:12,765 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-01-01 23:09:12,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-01 23:09:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-01 23:09:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-01 23:09:12,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-01 23:09:12,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,767 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-01 23:09:12,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:12,848 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-01-01 23:09:12,848 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-01-01 23:09:12,854 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-01-01 23:09:12,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-01 23:09:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-01 23:09:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-01 23:09:12,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-01 23:09:12,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,857 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-01 23:09:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 23:09:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 23:09:12,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 23:09:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 23:09:12,945 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-01-01 23:09:12,945 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-01-01 23:09:12,980 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 18 states and 22 transitions. Complement of second has 6 states. [2019-01-01 23:09:12,982 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 [2019-01-01 23:09:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-01 23:09:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-01-01 23:09:12,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-01 23:09:12,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2019-01-01 23:09:12,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 6 letters. [2019-01-01 23:09:12,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 23:09:12,984 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2019-01-01 23:09:12,986 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 23:09:12,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-01-01 23:09:12,986 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 23:09:12,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 23:09:12,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 23:09:12,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 23:09:12,987 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 23:09:12,987 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 23:09:12,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-01 23:09:12,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-01 23:09:12,988 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-01-01 23:09:12,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 23:09:12,988 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-01-01 23:09:12,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-01 23:09:12,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-01-01 23:09:12,989 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 23:09:12,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-01-01 23:09:12,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 23:09:12,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 23:09:12,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 23:09:12,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 23:09:12,989 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 23:09:12,990 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 23:09:12,990 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 23:09:12,990 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-01 23:09:12,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-01 23:09:12,990 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 23:09:12,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-01 23:09:12,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 11:09:12 BoogieIcfgContainer [2019-01-01 23:09:12,998 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 23:09:12,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 23:09:12,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 23:09:12,999 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 23:09:13,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 11:09:08" (3/4) ... [2019-01-01 23:09:13,003 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 23:09:13,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 23:09:13,004 INFO L168 Benchmark]: Toolchain (without parser) took 4905.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 952.7 MB in the beginning and 895.9 MB in the end (delta: 56.8 MB). Peak memory consumption was 186.3 MB. Max. memory is 11.5 GB. [2019-01-01 23:09:13,005 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 23:09:13,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.96 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 23:09:13,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.95 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 23:09:13,007 INFO L168 Benchmark]: Boogie Preprocessor took 25.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 23:09:13,008 INFO L168 Benchmark]: RCFGBuilder took 308.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-01-01 23:09:13,009 INFO L168 Benchmark]: BuchiAutomizer took 4269.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.9 MB in the end (delta: 213.0 MB). Peak memory consumption was 213.0 MB. Max. memory is 11.5 GB. [2019-01-01 23:09:13,009 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 1.2 GB. Free memory is still 895.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 23:09:13,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.96 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 40.95 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 308.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4269.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.9 MB in the end (delta: 213.0 MB). Peak memory consumption was 213.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.29 ms. Allocated memory is still 1.2 GB. Free memory is still 895.9 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 99 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.3s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 24 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf91 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...