./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 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/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 0.1.24-91b1670 [2018-11-28 23:15:02,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:02,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:02,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:02,487 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:02,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:02,492 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:02,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:02,498 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:02,499 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:02,501 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:02,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:02,502 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:02,504 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:02,508 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:02,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:02,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:02,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:02,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:02,520 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:02,521 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:02,522 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:02,527 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:02,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:02,528 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:02,529 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:02,531 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:02,532 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:02,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:02,537 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:02,538 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:02,539 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:02,541 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:02,541 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:02,542 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:02,542 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:02,546 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:02,573 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:02,573 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:02,574 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:02,574 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:02,575 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:02,575 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:02,576 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:02,576 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:02,576 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:02,576 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:02,576 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:02,576 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:02,577 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:02,579 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:02,579 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:02,579 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:02,580 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:02,580 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:02,580 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:02,580 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:02,580 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:02,581 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:02,582 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:02,583 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 [2018-11-28 23:15:02,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:02,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:02,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:02,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:02,644 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:02,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-28 23:15:02,708 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e059f00d3/d779da1d3be740deb869752fe89e168f/FLAGf22dd304a [2018-11-28 23:15:03,118 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:03,119 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-28 23:15:03,126 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e059f00d3/d779da1d3be740deb869752fe89e168f/FLAGf22dd304a [2018-11-28 23:15:03,507 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e059f00d3/d779da1d3be740deb869752fe89e168f [2018-11-28 23:15:03,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:03,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:03,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:03,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:03,517 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:03,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbc0696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03, skipping insertion in model container [2018-11-28 23:15:03,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:03,550 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:03,752 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:03,758 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:03,778 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:03,795 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:03,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03 WrapperNode [2018-11-28 23:15:03,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:03,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:03,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:03,797 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:03,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:03,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:03,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:03,838 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:03,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... [2018-11-28 23:15:03,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:03,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:03,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:03,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:03,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:04,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:04,226 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:04,226 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:15:04,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:04 BoogieIcfgContainer [2018-11-28 23:15:04,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:04,228 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:04,228 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:04,233 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:04,234 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:04,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:03" (1/3) ... [2018-11-28 23:15:04,236 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e404673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:04, skipping insertion in model container [2018-11-28 23:15:04,236 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:04,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:03" (2/3) ... [2018-11-28 23:15:04,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e404673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:04, skipping insertion in model container [2018-11-28 23:15:04,237 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:04,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:04" (3/3) ... [2018-11-28 23:15:04,239 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-28 23:15:04,301 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:04,301 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:04,302 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:04,302 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:04,302 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:04,302 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:04,302 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:04,302 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:04,302 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:04,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2018-11-28 23:15:04,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:04,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:04,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:04,350 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:04,350 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:04,350 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:04,351 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2018-11-28 23:15:04,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:04,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:04,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:04,352 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:04,352 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:04,361 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := 1; 5#L18-2true [2018-11-28 23:15:04,361 INFO L796 eck$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 [2018-11-28 23:15:04,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,368 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:15:04,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:04,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:04,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:04,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2018-11-28 23:15:04,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:04,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:04,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:04,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:15:04,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:04,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:04,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:04,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,712 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:04,713 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:04,713 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:04,714 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:04,714 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:04,714 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,714 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:04,714 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:04,715 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:04,715 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:04,715 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:04,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,005 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:05,006 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:05,013 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,013 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,062 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:05,062 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:05,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,091 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:05,092 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:05,098 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,098 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:05,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:05,125 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,252 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:07,254 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:07,255 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:07,255 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:07,255 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:07,255 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:07,255 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,255 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:07,255 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:07,255 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:07,256 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:07,256 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:07,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,632 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:07,637 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:07,639 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,640 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,641 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,641 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,641 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,646 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:07,646 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:07,656 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,657 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,657 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,658 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,658 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,658 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,661 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:07,661 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:07,671 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,672 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,673 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,673 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:07,673 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,674 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,674 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,675 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:07,675 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:07,687 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,687 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 23:15:07,687 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,688 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,689 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,689 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,689 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:07,693 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-28 23:15:07,693 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-28 23:15:07,701 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,703 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,705 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,705 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,705 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,705 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:07,711 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-28 23:15:07,712 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-28 23:15:07,723 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,724 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,724 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,725 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:07,725 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,725 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,725 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:07,727 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 23:15:07,728 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:07,741 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:07,759 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:07,759 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:07,762 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:07,762 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:07,763 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:07,763 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 [] [2018-11-28 23:15:07,765 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:07,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:07,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:07,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:07,895 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:07,896 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2018-11-28 23:15:07,945 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. [2018-11-28 23:15:07,947 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 [2018-11-28 23:15:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-28 23:15:07,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2018-11-28 23:15:07,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:07,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-28 23:15:07,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:07,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 23:15:07,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:07,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2018-11-28 23:15:07,956 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:07,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2018-11-28 23:15:07,960 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:07,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:07,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:07,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:07,961 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:07,961 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:07,961 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:07,962 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:07,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:07,962 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:07,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:07,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:07 BoogieIcfgContainer [2018-11-28 23:15:07,968 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:07,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:07,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:07,969 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:07,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:04" (3/4) ... [2018-11-28 23:15:07,973 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:07,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:07,974 INFO L168 Benchmark]: Toolchain (without parser) took 4463.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -102.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:07,976 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:07,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.32 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:07,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.64 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:07,978 INFO L168 Benchmark]: Boogie Preprocessor took 30.28 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:07,979 INFO L168 Benchmark]: RCFGBuilder took 358.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:07,980 INFO L168 Benchmark]: BuchiAutomizer took 3740.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 80.0 MB). Peak memory consumption was 80.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:07,981 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:07,987 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.32 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.64 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.28 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 358.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3740.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 80.0 MB). Peak memory consumption was 80.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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 3.6s 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: 13ms 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...