./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_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 85017c4a5a64f245bd703090448e8d5785d54b75 ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:33:56,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:33:56,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:33:56,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:33:56,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:33:56,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:33:56,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:33:56,614 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:33:56,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:33:56,618 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:33:56,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:33:56,619 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:33:56,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:33:56,621 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:33:56,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:33:56,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:33:56,624 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:33:56,626 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:33:56,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:33:56,629 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:33:56,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:33:56,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:33:56,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:33:56,635 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:33:56,635 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:33:56,636 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:33:56,637 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:33:56,638 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:33:56,639 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:33:56,640 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:33:56,640 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:33:56,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:33:56,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:33:56,641 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:33:56,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:33:56,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:33:56,644 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:33:56,662 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:33:56,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:33:56,664 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:33:56,664 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:33:56,664 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:33:56,664 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:33:56,664 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:33:56,665 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:33:56,665 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:33:56,665 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:33:56,665 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:33:56,665 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:33:56,666 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:33:56,666 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:33:56,666 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:33:56,666 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:33:56,667 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:33:56,667 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:33:56,667 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:33:56,667 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:33:56,667 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:33:56,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:33:56,668 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:33:56,668 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:33:56,668 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:33:56,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:33:56,672 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:33:56,672 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:33:56,674 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:33:56,674 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 -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2019-01-01 21:33:56,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:33:56,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:33:56,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:33:56,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:33:56,773 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:33:56,774 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2019-01-01 21:33:56,860 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/840b94346/91f3c29d791944c8bc26a64060b5b31f/FLAG51633e922 [2019-01-01 21:33:57,300 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:33:57,301 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2019-01-01 21:33:57,308 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/840b94346/91f3c29d791944c8bc26a64060b5b31f/FLAG51633e922 [2019-01-01 21:33:57,672 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/840b94346/91f3c29d791944c8bc26a64060b5b31f [2019-01-01 21:33:57,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:33:57,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:33:57,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:33:57,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:33:57,683 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:33:57,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:33:57" (1/1) ... [2019-01-01 21:33:57,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd3e7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:57, skipping insertion in model container [2019-01-01 21:33:57,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:33:57" (1/1) ... [2019-01-01 21:33:57,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:33:57,724 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:33:57,975 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:33:57,982 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:33:58,001 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:33:58,022 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:33:58,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58 WrapperNode [2019-01-01 21:33:58,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:33:58,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:33:58,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:33:58,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:33:58,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:33:58,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:33:58,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:33:58,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:33:58,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... [2019-01-01 21:33:58,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:33:58,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:33:58,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:33:58,094 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:33:58,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:33:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:33:58,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:33:58,472 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:33:58,472 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-01 21:33:58,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:33:58 BoogieIcfgContainer [2019-01-01 21:33:58,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:33:58,474 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:33:58,474 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:33:58,478 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:33:58,479 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:33:58,479 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:33:57" (1/3) ... [2019-01-01 21:33:58,481 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b28e208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:33:58, skipping insertion in model container [2019-01-01 21:33:58,481 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:33:58,481 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:58" (2/3) ... [2019-01-01 21:33:58,481 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b28e208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:33:58, skipping insertion in model container [2019-01-01 21:33:58,482 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:33:58,482 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:33:58" (3/3) ... [2019-01-01 21:33:58,484 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2019-01-01 21:33:58,553 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:33:58,554 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:33:58,554 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:33:58,554 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:33:58,554 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:33:58,554 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:33:58,555 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:33:58,555 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:33:58,555 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:33:58,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-01-01 21:33:58,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:33:58,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:33:58,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:33:58,605 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:33:58,605 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:33:58,606 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:33:58,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2019-01-01 21:33:58,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:33:58,607 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:33:58,607 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:33:58,608 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:33:58,608 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:33:58,618 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := 1; 5#L18-2true [2019-01-01 21:33:58,618 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - main_~y~0;main_~y~0 := 1 + main_~y~0; 5#L18-2true [2019-01-01 21:33:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 21:33:58,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:58,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:58,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:58,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:58,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-01-01 21:33:58,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:58,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:58,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:58,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:58,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:58,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-01 21:33:58,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:58,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:58,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:58,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:58,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:58,998 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-01-01 21:33:59,011 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:33:59,013 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:33:59,013 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:33:59,013 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:33:59,013 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:33:59,014 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:33:59,014 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:33:59,014 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:33:59,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-01 21:33:59,014 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:33:59,015 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:33:59,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:33:59,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:33:59,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:33:59,278 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:33:59,279 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:33:59,298 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:33:59,299 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:33:59,338 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:33:59,338 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:33:59,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:33:59,347 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:33:59,370 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:33:59,370 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 [2019-01-01 21:33:59,377 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:33:59,377 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 [2019-01-01 21:33:59,406 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:33:59,406 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:34:01,539 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:34:01,541 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:34:01,541 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:34:01,542 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:34:01,542 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:34:01,542 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:34:01,542 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:34:01,542 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:34:01,542 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:34:01,542 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-01 21:34:01,542 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:34:01,543 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:34:01,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:01,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:01,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:34:01,924 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:34:01,930 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:34:01,932 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:34:01,934 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:01,934 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:01,934 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:01,935 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:01,940 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:01,940 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:01,950 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:01,951 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:34:01,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:01,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:01,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:01,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:01,958 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:34:01,958 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:34:01,967 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:01,968 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:34:01,968 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:01,969 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:34:01,969 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:01,970 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:01,970 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:34:01,971 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:34:01,971 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:34:01,982 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:01,982 INFO L497 LassoAnalysis]: Using template '2-nested'. [2019-01-01 21:34:01,982 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:34:01,983 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:01,984 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:01,984 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:01,984 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2019-01-01 21:34:01,988 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-01-01 21:34:01,988 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-01-01 21:34:01,994 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:01,994 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:34:01,995 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:01,996 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:01,996 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:01,996 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2019-01-01 21:34:02,000 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-01-01 21:34:02,000 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-01-01 21:34:02,011 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:34:02,012 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:34:02,013 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:34:02,013 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:34:02,013 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:34:02,013 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:34:02,014 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2019-01-01 21:34:02,015 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-01-01 21:34:02,015 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:34:02,041 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:34:02,077 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-01-01 21:34:02,078 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-01 21:34:02,084 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:34:02,084 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:34:02,084 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:34:02,085 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = -2*ULTIMATE.start_main_~y~0 + 1 f1 = 2*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-01-01 21:34:02,087 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:34:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:34:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:02,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:34:02,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:34:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:34:02,206 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 [2019-01-01 21:34:02,208 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2019-01-01 21:34:02,319 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2019-01-01 21:34:02,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-01-01 21:34:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-01-01 21:34:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-01-01 21:34:02,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2019-01-01 21:34:02,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:02,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2019-01-01 21:34:02,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:02,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2019-01-01 21:34:02,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:34:02,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2019-01-01 21:34:02,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:34:02,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2019-01-01 21:34:02,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:34:02,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:34:02,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:34:02,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:34:02,344 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:02,344 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:02,344 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:34:02,345 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:34:02,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-01 21:34:02,347 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:34:02,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-01 21:34:02,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:34:02 BoogieIcfgContainer [2019-01-01 21:34:02,358 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:34:02,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:34:02,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:34:02,362 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:34:02,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:33:58" (3/4) ... [2019-01-01 21:34:02,368 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 21:34:02,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:34:02,369 INFO L168 Benchmark]: Toolchain (without parser) took 4692.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.3 MB in the beginning and 1.0 GB in the end (delta: -88.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:02,372 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:02,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.48 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:02,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:02,382 INFO L168 Benchmark]: Boogie Preprocessor took 26.59 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:34:02,384 INFO L168 Benchmark]: RCFGBuilder took 378.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:02,386 INFO L168 Benchmark]: BuchiAutomizer took 3884.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:02,388 INFO L168 Benchmark]: Witness Printer took 9.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-01-01 21:34:02,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.48 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 41.98 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.59 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 378.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3884.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 11.5 GB. * Witness Printer took 9.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if -2 * y + 1 > 0 then 1 else 0), (if -2 * y + 1 > 0 then -2 * y + 1 else 2 * x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf93 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...