./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-numeric/twisted_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0ed9222f 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-numeric/twisted_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 56facc094037ea8aa088ee9a4faafddcfe652feb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 02:18:54,313 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:18:54,315 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:18:54,326 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:18:54,327 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:18:54,328 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:18:54,329 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:18:54,331 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:18:54,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:18:54,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:18:54,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:18:54,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:18:54,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:18:54,336 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:18:54,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:18:54,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:18:54,339 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:18:54,340 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:18:54,342 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:18:54,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:18:54,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:18:54,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:18:54,349 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:18:54,349 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:18:54,349 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:18:54,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:18:54,351 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:18:54,352 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:18:54,353 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:18:54,354 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:18:54,354 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:18:54,355 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:18:54,355 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:18:54,355 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:18:54,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:18:54,357 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:18:54,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:18:54,382 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:18:54,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:18:54,384 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:18:54,384 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:18:54,384 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:18:54,384 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:18:54,384 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:18:54,385 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:18:54,385 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:18:54,385 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:18:54,385 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:18:54,385 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:18:54,387 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:18:54,387 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:18:54,387 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:18:54,387 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:18:54,387 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:18:54,387 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:18:54,388 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:18:54,388 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:18:54,389 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:18:54,389 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:18:54,389 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:18:54,389 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:18:54,389 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:18:54,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:18:54,390 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:18:54,392 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:18:54,393 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:18:54,393 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 -> 56facc094037ea8aa088ee9a4faafddcfe652feb [2019-01-14 02:18:54,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:18:54,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:18:54,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:18:54,450 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:18:54,451 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:18:54,451 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/twisted_true-termination_true-no-overflow.c [2019-01-14 02:18:54,509 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99085e0d5/fd3ab48de8f840799f6e70108d4cf8f5/FLAG91e276710 [2019-01-14 02:18:54,955 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:18:54,956 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/twisted_true-termination_true-no-overflow.c [2019-01-14 02:18:54,966 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99085e0d5/fd3ab48de8f840799f6e70108d4cf8f5/FLAG91e276710 [2019-01-14 02:18:55,319 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99085e0d5/fd3ab48de8f840799f6e70108d4cf8f5 [2019-01-14 02:18:55,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:18:55,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:18:55,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:18:55,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:18:55,328 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:18:55,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be1244e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55, skipping insertion in model container [2019-01-14 02:18:55,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:18:55,358 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:18:55,573 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:18:55,580 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:18:55,597 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:18:55,612 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:18:55,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55 WrapperNode [2019-01-14 02:18:55,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:18:55,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:18:55,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:18:55,614 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:18:55,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:18:55,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:18:55,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:18:55,652 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:18:55,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... [2019-01-14 02:18:55,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:18:55,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:18:55,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:18:55,689 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:18:55,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:55,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:18:55,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:18:56,063 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:18:56,063 INFO L286 CfgBuilder]: Removed 8 assue(true) statements. [2019-01-14 02:18:56,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:18:56 BoogieIcfgContainer [2019-01-14 02:18:56,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:18:56,069 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:18:56,069 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:18:56,074 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:18:56,076 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:18:56,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:18:55" (1/3) ... [2019-01-14 02:18:56,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7be36424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:18:56, skipping insertion in model container [2019-01-14 02:18:56,077 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:18:56,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:55" (2/3) ... [2019-01-14 02:18:56,078 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7be36424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:18:56, skipping insertion in model container [2019-01-14 02:18:56,078 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:18:56,078 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:18:56" (3/3) ... [2019-01-14 02:18:56,080 INFO L375 chiAutomizerObserver]: Analyzing ICFG twisted_true-termination_true-no-overflow.c [2019-01-14 02:18:56,167 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:18:56,168 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:18:56,168 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:18:56,168 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:18:56,169 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:18:56,169 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:18:56,169 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:18:56,169 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:18:56,169 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:18:56,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-01-14 02:18:56,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-01-14 02:18:56,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:56,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:56,232 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:18:56,233 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-01-14 02:18:56,233 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:18:56,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-01-14 02:18:56,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-01-14 02:18:56,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:56,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:56,235 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:18:56,235 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-01-14 02:18:56,244 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 8#L18true [2019-01-14 02:18:56,245 INFO L796 eck$LassoCheckResult]: Loop: 8#L18true assume !true; 9#L13true goto; 5#L16true assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 3#L15true assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 8#L18true [2019-01-14 02:18:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-14 02:18:56,255 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:56,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:56,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:56,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:56,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1450986, now seen corresponding path program 1 times [2019-01-14 02:18:56,366 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:56,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:56,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:56,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:56,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 02:18:56,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-14 02:18:56,400 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-01-14 02:18:56,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 02:18:56,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 02:18:56,425 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-01-14 02:18:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 02:18:56,438 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2019-01-14 02:18:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 02:18:56,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2019-01-14 02:18:56,442 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-01-14 02:18:56,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 7 states and 10 transitions. [2019-01-14 02:18:56,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-01-14 02:18:56,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-01-14 02:18:56,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-01-14 02:18:56,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:18:56,450 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:18:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-01-14 02:18:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-01-14 02:18:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-14 02:18:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-01-14 02:18:56,478 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:18:56,478 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:18:56,479 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-14 02:18:56,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-01-14 02:18:56,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-01-14 02:18:56,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:56,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:56,480 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:18:56,480 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-01-14 02:18:56,481 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 34#L18 [2019-01-14 02:18:56,481 INFO L796 eck$LassoCheckResult]: Loop: 34#L18 goto; 36#L9 assume !(f_~i~0 < f_~k); 37#L13 goto; 33#L16 assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 32#L15 assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 34#L18 [2019-01-14 02:18:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-01-14 02:18:56,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:56,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:56,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:56,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:56,492 INFO L82 PathProgramCache]: Analyzing trace with hash 33506102, now seen corresponding path program 1 times [2019-01-14 02:18:56,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:56,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:56,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:18:56,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:56,528 INFO L82 PathProgramCache]: Analyzing trace with hash 921009783, now seen corresponding path program 1 times [2019-01-14 02:18:56,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:56,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:56,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:56,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:56,670 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:56,672 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:56,672 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:56,672 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:56,673 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:18:56,673 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:56,673 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:56,673 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:56,673 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-14 02:18:56,673 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:56,674 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:56,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:56,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:56,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:56,975 WARN L181 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2019-01-14 02:18:57,158 WARN L181 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-01-14 02:18:57,166 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:57,167 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:57,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:57,173 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:57,189 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:57,189 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post1=0} Honda state: {ULTIMATE.start_f_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:57,213 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:57,213 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:57,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:18:57,259 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:57,381 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:18:57,384 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:57,384 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:57,384 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:57,384 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:57,384 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:18:57,384 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:57,384 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:57,385 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:57,385 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-14 02:18:57,385 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:57,385 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:57,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:57,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:57,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:57,729 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-01-14 02:18:57,731 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:57,737 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:18:57,739 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:57,741 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:57,741 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:57,742 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:57,742 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:57,742 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:57,744 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:57,744 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:57,751 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:18:57,759 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-01-14 02:18:57,759 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:18:57,762 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:18:57,762 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:18:57,763 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:18:57,763 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0, ULTIMATE.start_f_~l) = -1*ULTIMATE.start_f_~j~0 + 1*ULTIMATE.start_f_~l Supporting invariants [] [2019-01-14 02:18:57,764 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:18:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:57,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:57,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:58,121 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:18:58,125 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-01-14 02:18:58,187 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 15 states and 22 transitions. Complement of second has 4 states. [2019-01-14 02:18:58,188 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 [2019-01-14 02:18:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-14 02:18:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-01-14 02:18:58,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2019-01-14 02:18:58,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:58,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2019-01-14 02:18:58,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:58,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2019-01-14 02:18:58,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:58,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2019-01-14 02:18:58,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:18:58,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 17 transitions. [2019-01-14 02:18:58,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-01-14 02:18:58,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-01-14 02:18:58,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-01-14 02:18:58,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:18:58,203 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-01-14 02:18:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-01-14 02:18:58,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-01-14 02:18:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-14 02:18:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-01-14 02:18:58,206 INFO L729 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-01-14 02:18:58,206 INFO L609 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-01-14 02:18:58,206 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-14 02:18:58,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-01-14 02:18:58,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:18:58,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:58,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:58,210 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-14 02:18:58,210 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:18:58,210 INFO L794 eck$LassoCheckResult]: Stem: 96#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 97#L18 goto; 98#L9 [2019-01-14 02:18:58,210 INFO L796 eck$LassoCheckResult]: Loop: 98#L9 assume !!(f_~i~0 < f_~k);f_#t~post0 := f_~i~0;f_~i~0 := 1 + f_#t~post0;havoc f_#t~post0; 101#L8 assume 0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2); 98#L9 [2019-01-14 02:18:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash 997, now seen corresponding path program 1 times [2019-01-14 02:18:58,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:58,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:58,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:58,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:58,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:58,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-01-14 02:18:58,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:58,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:58,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:58,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:58,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 958440, now seen corresponding path program 1 times [2019-01-14 02:18:58,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:58,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:58,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:58,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:58,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:58,353 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:58,353 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:58,353 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:58,353 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:58,354 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:18:58,354 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:58,354 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:58,354 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:58,354 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-14 02:18:58,354 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:58,355 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:58,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:58,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:58,787 WARN L181 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 20 [2019-01-14 02:18:58,971 WARN L181 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-01-14 02:18:58,972 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:58,973 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:58,976 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:58,977 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:58,991 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:58,991 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0=0} Honda state: {ULTIMATE.start_f_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:59,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:59,021 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:59,053 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:18:59,054 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:59,227 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:18:59,229 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:59,230 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:59,230 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:59,230 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:59,230 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:18:59,230 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:59,230 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:59,231 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:59,231 INFO L131 ssoRankerPreferences]: Filename of dumped script: twisted_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-14 02:18:59,231 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:59,231 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:59,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:59,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:59,387 WARN L181 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 20 [2019-01-14 02:18:59,408 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:59,409 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:18:59,409 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:59,412 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:59,412 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:59,412 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:59,413 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:59,413 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:59,414 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:59,414 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:59,423 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:18:59,434 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-01-14 02:18:59,434 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:18:59,434 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:18:59,434 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:18:59,435 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:18:59,435 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~i~0, ULTIMATE.start_f_~k) = -1*ULTIMATE.start_f_~i~0 + 1*ULTIMATE.start_f_~k Supporting invariants [] [2019-01-14 02:18:59,435 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:18:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:59,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:59,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:59,520 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:18:59,520 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-01-14 02:18:59,551 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 21 states and 31 transitions. Complement of second has 4 states. [2019-01-14 02:18:59,553 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 [2019-01-14 02:18:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:18:59,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-01-14 02:18:59,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 2 letters. [2019-01-14 02:18:59,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:59,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-14 02:18:59,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:59,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 4 letters. [2019-01-14 02:18:59,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:59,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 31 transitions. [2019-01-14 02:18:59,557 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:18:59,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-01-14 02:18:59,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-14 02:18:59,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-14 02:18:59,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-14 02:18:59,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:18:59,559 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:18:59,559 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:18:59,559 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:18:59,559 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-14 02:18:59,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-14 02:18:59,559 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:18:59,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-14 02:18:59,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:18:59 BoogieIcfgContainer [2019-01-14 02:18:59,566 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:18:59,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:18:59,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:18:59,567 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:18:59,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:18:56" (3/4) ... [2019-01-14 02:18:59,571 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 02:18:59,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:18:59,572 INFO L168 Benchmark]: Toolchain (without parser) took 4248.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 952.7 MB in the beginning and 952.1 MB in the end (delta: 611.2 kB). Peak memory consumption was 115.4 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:59,573 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:59,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:59,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:59,575 INFO L168 Benchmark]: Boogie Preprocessor took 36.20 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:59,576 INFO L168 Benchmark]: RCFGBuilder took 380.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -145.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:59,577 INFO L168 Benchmark]: BuchiAutomizer took 3496.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 952.1 MB in the end (delta: 135.2 MB). Peak memory consumption was 135.2 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:59,578 INFO L168 Benchmark]: Witness Printer took 4.41 ms. Allocated memory is still 1.1 GB. Free memory is still 952.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:59,583 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 288.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.20 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 380.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -145.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3496.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 952.1 MB in the end (delta: 135.2 MB). Peak memory consumption was 135.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.41 ms. Allocated memory is still 1.1 GB. Free memory is still 952.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * j + l and consists of 3 locations. One deterministic module has affine ranking function -1 * i + k and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 11 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital33 mio100 ax100 hnf98 lsp88 ukn100 mio100 lsp100 div221 bol100 ite118 ukn100 eq148 hnf61 smp43 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...