./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e 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/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:15:20,021 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:20,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:20,035 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:20,035 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:20,036 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:20,037 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:20,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:20,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:20,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:20,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:20,044 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:20,046 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:20,046 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:20,048 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:20,049 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:20,050 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:20,052 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:20,054 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:20,056 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:20,057 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:20,059 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:20,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:20,061 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:20,062 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:20,063 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:20,064 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:20,065 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:20,066 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:20,067 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:20,067 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:20,068 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:20,069 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:20,069 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:20,070 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:20,070 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:20,071 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:20,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:20,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:20,090 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:20,090 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:20,090 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:20,090 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:20,091 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:20,091 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:20,091 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:20,092 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:20,092 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:20,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:20,092 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:20,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:20,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:20,094 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:20,094 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:20,094 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:20,094 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:20,094 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:20,094 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:20,095 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:20,095 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:20,095 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:20,095 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:20,095 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:20,096 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:20,097 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:20,098 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:20,098 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2018-11-28 23:15:20,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:20,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:20,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:20,151 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:20,152 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:20,153 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:20,213 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048b2a339/f9680b43719b4b7998d4d4c91762a773/FLAG66d526745 [2018-11-28 23:15:20,676 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:20,677 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:20,685 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048b2a339/f9680b43719b4b7998d4d4c91762a773/FLAG66d526745 [2018-11-28 23:15:21,021 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048b2a339/f9680b43719b4b7998d4d4c91762a773 [2018-11-28 23:15:21,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:21,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:21,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:21,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:21,031 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:21,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdf83c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21, skipping insertion in model container [2018-11-28 23:15:21,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:21,066 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:21,272 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:21,278 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:21,301 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:21,318 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:21,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21 WrapperNode [2018-11-28 23:15:21,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:21,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:21,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:21,319 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:21,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:21,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:21,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:21,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:21,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (1/1) ... [2018-11-28 23:15:21,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:21,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:21,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:21,390 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:21,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (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 [2018-11-28 23:15:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:21,806 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:21,807 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 23:15:21,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:21 BoogieIcfgContainer [2018-11-28 23:15:21,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:21,808 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:21,808 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:21,812 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:21,813 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:21,813 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:21" (1/3) ... [2018-11-28 23:15:21,815 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24c5c22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:21, skipping insertion in model container [2018-11-28 23:15:21,815 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:21,815 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:21" (2/3) ... [2018-11-28 23:15:21,815 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24c5c22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:21, skipping insertion in model container [2018-11-28 23:15:21,816 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:21,816 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:21" (3/3) ... [2018-11-28 23:15:21,819 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:21,879 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:21,880 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:21,880 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:21,880 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:21,880 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:21,880 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:21,881 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:21,881 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:21,881 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:21,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:15:21,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:21,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:21,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:21,922 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:21,922 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:21,922 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:21,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:15:21,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:21,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:21,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:21,924 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:21,924 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:21,933 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2018-11-28 23:15:21,935 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 6#L19-2true assume !(main_~y~0 < main_~x~0); 5#L19-3true main_~x~0 := main_~x~0 - 1; 3#L17-2true [2018-11-28 23:15:21,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:15:21,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:21,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:22,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:22,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:22,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:22,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-28 23:15:22,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:22,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:22,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:22,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:22,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:22,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:22,064 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-28 23:15:22,064 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:22,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:22,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:22,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:22,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:22,290 WARN L180 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-11-28 23:15:22,349 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:22,352 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:22,353 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:22,353 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:22,353 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:22,353 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:22,353 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:22,354 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:22,354 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:22,354 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:22,354 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:22,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,695 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:15:22,702 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:22,703 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 [2018-11-28 23:15:22,718 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:22,718 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:22,777 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:22,777 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:22,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:22,789 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:22,819 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:22,819 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:22,824 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:22,825 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:22,853 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:22,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:22,885 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:22,887 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:22,887 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:22,887 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:22,887 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:22,888 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:22,888 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:22,888 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:22,888 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:22,888 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:22,888 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:22,888 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:22,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,182 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:23,187 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:23,189 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 [2018-11-28 23:15:23,191 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:23,191 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:23,192 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:23,192 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:23,192 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:23,196 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:23,196 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:23,207 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:23,216 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:23,216 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:23,219 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:23,219 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:23,220 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:23,221 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 23:15:23,223 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:23,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:23,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:23,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:23,431 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 [2018-11-28 23:15:23,434 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 23:15:23,546 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2018-11-28 23:15:23,547 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 [2018-11-28 23:15:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-28 23:15:23,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 23:15:23,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:23,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:15:23,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:23,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 23:15:23,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:23,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2018-11-28 23:15:23,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:23,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-28 23:15:23,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-28 23:15:23,567 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:15:23,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 23:15:23,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:23,568 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:15:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 23:15:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-28 23:15:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2018-11-28 23:15:23,600 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-28 23:15:23,600 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-28 23:15:23,600 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:23,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2018-11-28 23:15:23,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:23,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:23,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:23,602 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:23,602 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:23,603 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 70#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 72#L19-2 [2018-11-28 23:15:23,603 INFO L796 eck$LassoCheckResult]: Loop: 72#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 72#L19-2 [2018-11-28 23:15:23,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:15:23,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:23,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:23,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:23,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-28 23:15:23,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:23,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:23,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:23,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-28 23:15:23,624 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:23,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:23,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:23,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,692 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:23,692 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:23,692 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:23,692 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:23,692 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:23,693 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:23,693 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:23,693 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:23,693 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-28 23:15:23,693 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:23,693 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:23,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:24,095 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:24,095 INFO L412 LassoAnalysis]: Checking for nontermination... 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) [2018-11-28 23:15:24,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:24,107 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:24,154 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:24,154 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:24,163 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:24,163 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 [2018-11-28 23:15:24,173 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:24,173 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:24,208 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:24,208 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-28 23:15:24,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:24,259 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:36,359 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 23:15:36,367 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:36,367 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:36,367 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:36,367 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:36,368 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:36,368 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:36,368 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:36,368 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:36,368 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-28 23:15:36,368 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:36,368 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:36,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:36,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:36,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:36,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:36,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:36,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:36,642 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:36,643 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:36,643 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 [2018-11-28 23:15:36,644 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:36,644 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:36,644 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:36,644 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:36,649 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:36,649 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:36,654 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:36,654 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 [2018-11-28 23:15:36,655 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:36,655 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:36,655 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:36,656 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:36,656 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:36,656 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:36,656 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:36,659 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:36,661 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 [2018-11-28 23:15:36,662 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:36,662 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:36,663 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:36,663 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:36,663 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:36,664 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:36,664 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:36,667 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:36,668 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 [2018-11-28 23:15:36,670 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:36,671 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:36,671 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:36,672 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:36,672 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:36,672 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:36,672 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:36,675 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:36,677 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 [2018-11-28 23:15:36,678 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:36,678 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:36,678 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:36,681 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:36,688 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:36,692 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:36,779 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:36,834 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-28 23:15:36,834 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-28 23:15:36,837 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:36,839 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:36,842 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:36,842 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-28 23:15:36,848 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:36,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:36,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:36,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:36,978 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:36,979 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-28 23:15:37,247 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2018-11-28 23:15:37,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:37,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-28 23:15:37,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:37,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-28 23:15:37,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:37,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:15:37,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:37,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2018-11-28 23:15:37,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:37,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2018-11-28 23:15:37,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-28 23:15:37,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-28 23:15:37,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2018-11-28 23:15:37,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:37,254 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-28 23:15:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2018-11-28 23:15:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-11-28 23:15:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-28 23:15:37,255 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:37,255 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:37,255 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:37,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-28 23:15:37,256 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:37,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:37,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:37,257 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-28 23:15:37,257 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:37,257 INFO L794 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 127#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 128#L19-2 assume !(main_~y~0 < main_~x~0); 131#L19-3 main_~x~0 := main_~x~0 - 1; 129#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 130#L19-2 [2018-11-28 23:15:37,257 INFO L796 eck$LassoCheckResult]: Loop: 130#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 130#L19-2 [2018-11-28 23:15:37,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:37,258 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2018-11-28 23:15:37,258 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:37,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:37,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:37,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:37,278 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-28 23:15:37,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:37,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:37,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:37,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2018-11-28 23:15:37,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:37,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:37,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:37,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:37,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:15:37,382 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 [2018-11-28 23:15:37,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:37,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:37,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:15:37,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 23:15:37,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:15:37,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:15:37,498 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 7 states. [2018-11-28 23:15:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:37,648 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2018-11-28 23:15:37,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:15:37,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2018-11-28 23:15:37,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:37,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 8 states and 10 transitions. [2018-11-28 23:15:37,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:15:37,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:15:37,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-11-28 23:15:37,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:37,652 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-28 23:15:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-11-28 23:15:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-28 23:15:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 23:15:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-28 23:15:37,654 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 23:15:37,655 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 23:15:37,655 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:37,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-28 23:15:37,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:37,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:37,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:37,658 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 23:15:37,658 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:37,658 INFO L794 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 180#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 181#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 186#L19-2 assume !(main_~y~0 < main_~x~0); 185#L19-3 main_~x~0 := main_~x~0 - 1; 182#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 183#L19-2 [2018-11-28 23:15:37,658 INFO L796 eck$LassoCheckResult]: Loop: 183#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 183#L19-2 [2018-11-28 23:15:37,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:37,660 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2018-11-28 23:15:37,660 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:37,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:37,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:37,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 3 times [2018-11-28 23:15:37,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:37,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:37,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:37,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:37,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:37,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 3 times [2018-11-28 23:15:37,680 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:37,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:37,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:37,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:37,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:15:37,811 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:15:37,823 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:15:37,842 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 23:15:37,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:15:37,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:37,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:15:37,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 23:15:37,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:15:37,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:15:37,926 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 8 states. [2018-11-28 23:15:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:38,061 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2018-11-28 23:15:38,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:15:38,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2018-11-28 23:15:38,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:38,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2018-11-28 23:15:38,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 23:15:38,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 23:15:38,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2018-11-28 23:15:38,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:38,064 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-28 23:15:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2018-11-28 23:15:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-11-28 23:15:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:15:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-11-28 23:15:38,067 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-28 23:15:38,067 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-28 23:15:38,068 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:15:38,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-11-28 23:15:38,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:38,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:38,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:38,070 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2018-11-28 23:15:38,070 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:38,070 INFO L794 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 238#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 239#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 244#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 245#L19-2 assume !(main_~y~0 < main_~x~0); 242#L19-3 main_~x~0 := main_~x~0 - 1; 240#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 241#L19-2 [2018-11-28 23:15:38,070 INFO L796 eck$LassoCheckResult]: Loop: 241#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 241#L19-2 [2018-11-28 23:15:38,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1360231782, now seen corresponding path program 4 times [2018-11-28 23:15:38,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:38,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:38,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:38,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:38,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:38,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 4 times [2018-11-28 23:15:38,081 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:38,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:38,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:38,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:38,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:38,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 5 times [2018-11-28 23:15:38,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:38,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:38,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:38,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:38,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:38,271 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-11-28 23:15:38,287 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:38,287 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:38,287 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:38,287 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:38,287 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:38,287 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:38,287 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:38,288 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:38,288 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-28 23:15:38,288 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:38,288 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:38,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,435 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:38,435 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2018-11-28 23:15:38,440 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:38,440 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:38,443 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:38,443 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-28 23:15:38,464 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:38,464 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:38,467 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:38,467 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:38,489 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:38,489 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:38,496 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:38,496 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:38,518 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:38,518 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:38,538 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:38,539 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:38,543 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:38,543 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:38,567 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:38,567 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:38,701 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:38,703 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:38,703 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:38,703 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:38,703 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:38,703 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:38,703 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:38,703 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:38,703 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:38,704 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-28 23:15:38,704 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:38,704 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:38,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:38,841 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:38,841 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:38,842 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 [2018-11-28 23:15:38,843 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:38,843 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:38,843 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:38,844 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:38,844 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:38,844 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:38,844 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:38,845 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:38,845 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 [2018-11-28 23:15:38,846 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:38,846 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:38,846 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:38,846 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:38,846 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:38,847 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:38,847 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:38,847 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:38,848 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 [2018-11-28 23:15:38,848 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:38,848 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:38,849 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:38,849 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:38,849 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:38,849 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:38,849 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:38,850 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:38,850 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 [2018-11-28 23:15:38,851 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:38,851 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:38,851 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:38,851 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:38,853 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:38,853 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:38,855 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:38,856 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 [2018-11-28 23:15:38,856 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:38,857 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:38,857 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:38,857 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:38,858 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:38,858 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:38,861 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:38,862 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 [2018-11-28 23:15:38,862 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:38,862 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:38,863 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:38,863 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:38,865 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:38,865 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:38,881 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:38,889 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:38,890 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:38,890 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:38,891 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:38,892 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:38,892 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-28 23:15:38,915 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:38,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:38,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:38,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:38,998 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:38,998 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 23:15:39,037 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2018-11-28 23:15:39,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:39,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:15:39,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:39,040 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:39,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:39,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:39,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:39,099 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:39,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 23:15:39,156 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2018-11-28 23:15:39,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:39,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:15:39,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:39,159 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:39,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:39,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:39,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:39,217 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 1 loop predicates [2018-11-28 23:15:39,217 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 23:15:39,353 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 13 transitions. Complement of second has 4 states. [2018-11-28 23:15:39,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-28 23:15:39,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:15:39,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:39,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-28 23:15:39,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:39,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-28 23:15:39,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:39,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-11-28 23:15:39,357 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:39,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-11-28 23:15:39,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:39,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:39,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:39,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:39,358 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:39,358 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:39,358 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:39,358 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:15:39,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:39,358 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:39,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:39,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:39 BoogieIcfgContainer [2018-11-28 23:15:39,366 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:39,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:39,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:39,366 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:39,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:21" (3/4) ... [2018-11-28 23:15:39,376 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:39,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:39,377 INFO L168 Benchmark]: Toolchain (without parser) took 18351.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 951.3 MB in the beginning and 817.7 MB in the end (delta: 133.7 MB). Peak memory consumption was 282.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:39,378 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. [2018-11-28 23:15:39,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.22 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:39,379 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.02 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:39,381 INFO L168 Benchmark]: Boogie Preprocessor took 28.94 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:39,381 INFO L168 Benchmark]: RCFGBuilder took 417.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:39,382 INFO L168 Benchmark]: BuchiAutomizer took 17557.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 817.7 MB in the end (delta: 315.1 MB). Peak memory consumption was 315.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:39,384 INFO L168 Benchmark]: Witness Printer took 9.73 ms. Allocated memory is still 1.2 GB. Free memory is still 817.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:39,389 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 291.22 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.02 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.94 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 417.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 17557.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 817.7 MB in the end (delta: 315.1 MB). Peak memory consumption was 315.1 MB. Max. memory is 11.5 GB. * Witness Printer took 9.73 ms. Allocated memory is still 1.2 GB. Free memory is still 817.7 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 + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 17.5s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 15.9s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 26 SDslu, 7 SDs, 0 SdLazy, 84 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax165 hnf98 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf92 smp100 dnf100 smp100 tf102 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...