./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/b.12_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-restricted-15/b.12_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 f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:16:53,478 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:16:53,480 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:16:53,494 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:16:53,495 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:16:53,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:16:53,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:16:53,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:16:53,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:16:53,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:16:53,510 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:16:53,510 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:16:53,512 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:16:53,514 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:16:53,522 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:16:53,524 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:16:53,525 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:16:53,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:16:53,533 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:16:53,535 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:16:53,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:16:53,541 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:16:53,546 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:16:53,547 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:16:53,547 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:16:53,548 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:16:53,550 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:16:53,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:16:53,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:16:53,555 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:16:53,556 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:16:53,556 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:16:53,557 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:16:53,557 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:16:53,559 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:16:53,560 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:16:53,561 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:16:53,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:16:53,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:16:53,590 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:16:53,591 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:16:53,592 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:16:53,592 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:16:53,593 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:16:53,594 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:16:53,594 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:16:53,594 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:16:53,594 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:16:53,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:16:53,595 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:16:53,595 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:16:53,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:16:53,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:16:53,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:16:53,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:16:53,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:16:53,596 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:16:53,599 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:16:53,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:16:53,600 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:16:53,600 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:16:53,600 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:16:53,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:16:53,601 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:16:53,601 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:16:53,603 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:16:53,603 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 -> f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff [2018-11-28 23:16:53,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:16:53,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:16:53,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:16:53,699 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:16:53,700 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:16:53,701 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/b.12_true-termination_true-no-overflow.c [2018-11-28 23:16:53,772 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c030f5e9/d16e7ae3b7904c17a72bb9da9ba88599/FLAG5f871adde [2018-11-28 23:16:54,279 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:16:54,279 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/b.12_true-termination_true-no-overflow.c [2018-11-28 23:16:54,285 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c030f5e9/d16e7ae3b7904c17a72bb9da9ba88599/FLAG5f871adde [2018-11-28 23:16:54,613 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c030f5e9/d16e7ae3b7904c17a72bb9da9ba88599 [2018-11-28 23:16:54,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:16:54,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:16:54,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:54,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:16:54,625 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:16:54,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c693405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54, skipping insertion in model container [2018-11-28 23:16:54,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:16:54,658 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:16:54,877 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:54,883 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:16:54,906 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:54,924 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:16:54,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54 WrapperNode [2018-11-28 23:16:54,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:54,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:54,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:16:54,927 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:16:54,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:54,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:16:54,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:16:54,977 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:16:54,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:54,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:55,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:55,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (1/1) ... [2018-11-28 23:16:55,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:16:55,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:16:55,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:16:55,017 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:16:55,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (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 23:16:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:16:55,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:16:55,374 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:16:55,374 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:16:55,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:55 BoogieIcfgContainer [2018-11-28 23:16:55,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:16:55,376 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:16:55,376 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:16:55,380 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:16:55,381 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:55,381 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:16:54" (1/3) ... [2018-11-28 23:16:55,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@235bfc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:55, skipping insertion in model container [2018-11-28 23:16:55,382 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:55,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:54" (2/3) ... [2018-11-28 23:16:55,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@235bfc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:55, skipping insertion in model container [2018-11-28 23:16:55,383 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:55,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:55" (3/3) ... [2018-11-28 23:16:55,385 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.12_true-termination_true-no-overflow.c [2018-11-28 23:16:55,461 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:16:55,462 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:16:55,462 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:16:55,462 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:16:55,462 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:16:55,463 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:16:55,463 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:16:55,464 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:16:55,464 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:16:55,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:16:55,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:55,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:55,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:55,529 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:55,530 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:55,530 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:16:55,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:16:55,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:55,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:55,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:55,533 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:55,533 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:55,543 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2018-11-28 23:16:55,544 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0 > 0 || main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2018-11-28 23:16:55,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:55,554 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:16:55,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:55,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:55,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:55,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:55,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:55,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-28 23:16:55,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:55,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:55,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:55,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:55,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 23:16:55,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:55,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:55,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:55,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:55,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:55,888 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-11-28 23:16:55,980 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:55,981 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:55,981 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:55,981 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:55,981 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:55,981 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:55,982 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:55,982 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:55,982 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:16:55,982 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:55,982 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:56,007 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 23:16:56,043 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 23:16:56,053 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 23:16:56,167 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:56,167 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:56,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:56,173 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:56,198 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:56,199 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 23:16:56,205 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:56,206 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:56,231 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:56,231 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 23:16:56,244 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:56,244 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 23:16:56,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:56,268 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:56,293 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:56,295 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:56,296 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:56,296 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:56,296 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:56,296 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:56,296 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:56,296 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:56,297 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:56,297 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:16:56,297 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:56,297 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:56,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:56,306 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 23:16:56,341 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 23:16:56,654 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:56,659 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:56,661 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:56,663 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:56,663 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:56,663 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:56,663 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:56,669 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:56,669 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:56,679 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:56,680 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 23:16:56,681 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:56,681 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:56,681 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:56,681 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:56,684 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:56,685 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:56,695 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:56,696 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 23:16:56,697 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:56,697 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:56,697 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:56,698 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:56,698 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:56,699 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:56,699 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:56,705 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:56,709 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:56,710 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:56,712 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:56,712 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:56,713 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:56,713 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:16:56,717 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:56,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:56,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:56,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:56,827 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 23:16:56,847 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 23:16:56,849 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 23:16:56,908 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2018-11-28 23:16:56,908 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 23:16:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 23:16:56,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 23:16:56,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:56,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:16:56,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:56,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 23:16:56,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:56,916 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2018-11-28 23:16:56,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:56,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2018-11-28 23:16:56,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 23:16:56,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-28 23:16:56,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2018-11-28 23:16:56,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:56,927 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2018-11-28 23:16:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2018-11-28 23:16:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-28 23:16:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 23:16:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2018-11-28 23:16:56,959 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2018-11-28 23:16:56,959 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2018-11-28 23:16:56,959 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:56,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2018-11-28 23:16:56,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:56,960 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:56,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:56,963 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:16:56,963 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:16:56,963 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2018-11-28 23:16:56,963 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2018-11-28 23:16:56,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:16:56,964 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:56,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:56,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:56,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:56,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:56,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:56,990 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2018-11-28 23:16:56,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:56,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:56,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:56,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:57,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2018-11-28 23:16:57,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:57,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:57,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:57,086 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:57,086 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:57,087 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:57,087 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:57,087 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:57,087 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:57,088 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:57,088 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:57,088 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:57,088 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:57,089 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:57,090 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 23:16:57,114 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 23:16:57,129 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 23:16:57,153 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 23:16:57,318 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:57,318 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:57,324 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:57,325 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:57,344 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:57,344 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:57,349 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:57,349 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:57,370 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:57,370 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:57,379 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:57,380 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:57,405 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:57,405 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:57,460 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:57,463 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:57,463 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:57,463 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:57,463 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:57,463 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:57,464 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:57,464 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:57,465 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:57,465 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.12_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:57,465 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:57,465 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:57,468 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 23:16:57,506 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 23:16:57,512 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 23:16:57,527 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 23:16:57,676 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:57,677 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:57,678 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 23:16:57,681 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:57,681 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:57,682 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:57,682 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:57,685 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:57,685 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:57,690 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:57,691 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 23:16:57,691 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:57,693 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:57,693 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:57,693 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:57,696 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:57,696 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:57,703 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:57,703 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 23:16:57,704 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:57,704 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:57,704 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:57,705 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:57,705 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:57,705 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:57,708 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:57,713 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:57,718 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:57,718 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:57,718 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:57,718 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:57,719 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:57,719 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:16:57,719 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:57,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:57,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:57,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:58,251 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 23:16:58,251 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:16:58,252 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-28 23:16:58,305 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2018-11-28 23:16:58,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-28 23:16:58,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 23:16:58,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:58,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:16:58,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:58,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:16:58,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:58,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2018-11-28 23:16:58,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:58,314 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2018-11-28 23:16:58,314 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:16:58,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 23:16:58,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2018-11-28 23:16:58,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:58,315 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-28 23:16:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2018-11-28 23:16:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-11-28 23:16:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 23:16:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2018-11-28 23:16:58,320 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-11-28 23:16:58,320 INFO L608 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-11-28 23:16:58,320 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:58,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2018-11-28 23:16:58,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:58,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:58,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:58,322 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:16:58,322 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:16:58,322 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2018-11-28 23:16:58,322 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2018-11-28 23:16:58,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 23:16:58,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:58,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:58,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:58,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:58,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:58,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2018-11-28 23:16:58,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:58,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:58,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:58,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:58,413 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 23:16:58,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:58,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:16:58,419 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:16:58,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:16:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:16:58,425 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 23:16:58,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:58,488 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2018-11-28 23:16:58,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:16:58,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2018-11-28 23:16:58,491 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:58,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-28 23:16:58,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:58,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:58,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:58,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:58,493 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:58,493 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:58,493 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:58,493 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:58,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:58,494 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:58,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:58,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:58 BoogieIcfgContainer [2018-11-28 23:16:58,500 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:58,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:58,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:58,501 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:58,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:55" (3/4) ... [2018-11-28 23:16:58,505 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:58,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:58,507 INFO L168 Benchmark]: Toolchain (without parser) took 3888.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 951.3 MB in the beginning and 942.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:58,508 INFO L168 Benchmark]: CDTParser took 0.19 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 23:16:58,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:58,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:58,510 INFO L168 Benchmark]: Boogie Preprocessor took 37.80 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:58,510 INFO L168 Benchmark]: RCFGBuilder took 360.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:58,512 INFO L168 Benchmark]: BuchiAutomizer took 3124.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 949.0 MB in the end (delta: 147.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:58,512 INFO L168 Benchmark]: Witness Printer took 5.02 ms. Allocated memory is still 1.2 GB. Free memory was 949.0 MB in the beginning and 942.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:58,518 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.80 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 360.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3124.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 949.0 MB in the end (delta: 147.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.02 ms. Allocated memory is still 1.2 GB. Free memory was 949.0 MB in the beginning and 942.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...