./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig1_false-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 bbffee41c5a3e36a7439f4e96877154fc3cf2a16 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 02:15:49,831 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:15:49,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:15:49,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:15:49,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:15:49,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:15:49,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:15:49,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:15:49,856 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:15:49,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:15:49,858 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:15:49,859 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:15:49,860 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:15:49,861 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:15:49,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:15:49,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:15:49,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:15:49,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:15:49,870 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:15:49,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:15:49,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:15:49,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:15:49,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:15:49,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:15:49,879 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:15:49,881 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:15:49,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:15:49,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:15:49,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:15:49,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:15:49,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:15:49,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:15:49,888 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:15:49,888 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:15:49,889 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:15:49,890 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:15:49,891 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:15:49,926 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:15:49,926 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:15:49,928 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:15:49,930 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:15:49,930 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:15:49,930 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:15:49,931 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:15:49,931 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:15:49,931 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:15:49,931 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:15:49,931 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:15:49,932 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:15:49,932 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:15:49,932 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:15:49,932 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:15:49,932 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:15:49,932 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:15:49,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:15:49,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:15:49,936 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:15:49,936 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:15:49,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:15:49,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:15:49,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:15:49,937 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:15:49,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:15:49,937 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:15:49,937 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:15:49,939 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:15:49,939 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 -> bbffee41c5a3e36a7439f4e96877154fc3cf2a16 [2019-01-14 02:15:50,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:15:50,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:15:50,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:15:50,045 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:15:50,046 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:15:50,047 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c [2019-01-14 02:15:50,132 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203a3f633/8877d0e9a8844b978c9e4c6aefe27c43/FLAGa908f8cb7 [2019-01-14 02:15:50,667 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:15:50,668 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/Urban-WST2013-Fig1_false-termination_true-no-overflow.c [2019-01-14 02:15:50,674 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203a3f633/8877d0e9a8844b978c9e4c6aefe27c43/FLAGa908f8cb7 [2019-01-14 02:15:51,025 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203a3f633/8877d0e9a8844b978c9e4c6aefe27c43 [2019-01-14 02:15:51,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:15:51,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:15:51,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:15:51,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:15:51,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:15:51,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4caf50c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51, skipping insertion in model container [2019-01-14 02:15:51,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:15:51,090 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:15:51,336 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:15:51,343 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:15:51,368 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:15:51,387 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:15:51,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51 WrapperNode [2019-01-14 02:15:51,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:15:51,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:15:51,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:15:51,389 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:15:51,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:15:51,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:15:51,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:15:51,436 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:15:51,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... [2019-01-14 02:15:51,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:15:51,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:15:51,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:15:51,462 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:15:51,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:15:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:15:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:15:51,764 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:15:51,764 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 02:15:51,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:15:51 BoogieIcfgContainer [2019-01-14 02:15:51,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:15:51,766 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:15:51,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:15:51,771 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:15:51,772 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:15:51,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:15:51" (1/3) ... [2019-01-14 02:15:51,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67cfdd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:15:51, skipping insertion in model container [2019-01-14 02:15:51,773 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:15:51,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:15:51" (2/3) ... [2019-01-14 02:15:51,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67cfdd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:15:51, skipping insertion in model container [2019-01-14 02:15:51,774 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:15:51,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:15:51" (3/3) ... [2019-01-14 02:15:51,776 INFO L375 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1_false-termination_true-no-overflow.c [2019-01-14 02:15:51,841 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:15:51,841 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:15:51,842 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:15:51,842 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:15:51,842 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:15:51,842 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:15:51,842 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:15:51,843 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:15:51,843 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:15:51,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-14 02:15:51,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:15:51,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:15:51,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:15:51,888 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:15:51,889 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:15:51,889 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:15:51,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-14 02:15:51,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:15:51,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:15:51,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:15:51,891 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:15:51,891 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:15:51,900 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-01-14 02:15:51,900 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 <= 10); 8#L18true assume main_~x~0 > 6;main_~x~0 := 2 + main_~x~0; 5#L18-2true [2019-01-14 02:15:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-14 02:15:51,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:15:51,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:15:51,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:51,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:15:51,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:52,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-01-14 02:15:52,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:15:52,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:15:52,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:52,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:15:52,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-01-14 02:15:52,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:15:52,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:15:52,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:52,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:15:52,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:52,216 WARN L181 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-01-14 02:15:52,307 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:15:52,308 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:15:52,308 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:15:52,309 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:15:52,309 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:15:52,309 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:15:52,309 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:15:52,309 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:15:52,309 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1_false-termination_true-no-overflow.c_Iteration1_Loop [2019-01-14 02:15:52,310 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:15:52,310 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:15:52,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:15:52,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:15:52,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:15:52,581 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:15:52,582 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:15:52,589 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:15:52,589 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:15:52,619 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:15:52,619 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 [2019-01-14 02:15:52,625 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:15:52,626 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:15:52,656 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:15:52,657 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:15:52,673 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:15:52,674 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:15:52,703 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:15:52,704 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:15:52,713 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:15:52,732 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:15:52,732 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:15:52,732 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:15:52,733 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:15:52,733 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:15:52,733 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:15:52,733 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:15:52,733 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:15:52,733 INFO L131 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1_false-termination_true-no-overflow.c_Iteration1_Loop [2019-01-14 02:15:52,733 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:15:52,734 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:15:52,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:15:52,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:15:52,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:15:52,959 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:15:52,965 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:15:52,967 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:15:52,970 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:15:52,970 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:15:52,970 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:15:52,970 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:15:52,977 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:15:52,977 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:15:52,989 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:15:52,990 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:15:52,992 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:15:52,992 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:15:52,992 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:15:52,992 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:15:52,997 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:15:52,997 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:15:53,009 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:15:53,010 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:15:53,012 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:15:53,012 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:15:53,013 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:15:53,013 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:15:53,013 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:15:53,015 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:15:53,015 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:15:53,024 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:15:53,033 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:15:53,033 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-14 02:15:53,037 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:15:53,037 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:15:53,037 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:15:53,038 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 + 11 Supporting invariants [] [2019-01-14 02:15:53,040 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:15:53,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:15:53,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:15:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:15:53,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:15:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:15:53,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:15:53,374 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-01-14 02:15:53,463 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-01-14 02:15:53,464 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 [2019-01-14 02:15:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:15:53,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-01-14 02:15:53,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2019-01-14 02:15:53,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:15:53,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2019-01-14 02:15:53,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:15:53,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2019-01-14 02:15:53,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:15:53,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-01-14 02:15:53,476 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:15:53,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2019-01-14 02:15:53,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-01-14 02:15:53,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-14 02:15:53,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-01-14 02:15:53,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:15:53,483 INFO L706 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-01-14 02:15:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-01-14 02:15:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-01-14 02:15:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-14 02:15:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-01-14 02:15:53,509 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:15:53,509 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:15:53,509 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-14 02:15:53,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-01-14 02:15:53,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:15:53,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:15:53,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:15:53,511 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-14 02:15:53,511 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:15:53,511 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 64#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2019-01-14 02:15:53,511 INFO L796 eck$LassoCheckResult]: Loop: 66#L18 assume !(main_~x~0 > 6); 65#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2019-01-14 02:15:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-14 02:15:53,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:15:53,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:15:53,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:53,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:15:53,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:53,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-01-14 02:15:53,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:15:53,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:15:53,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:53,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:15:53,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:15:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-01-14 02:15:53,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:15:53,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:15:53,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:53,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:15:53,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:15:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:15:53,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:15:53 BoogieIcfgContainer [2019-01-14 02:15:53,611 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:15:53,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:15:53,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:15:53,613 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:15:53,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:15:51" (3/4) ... [2019-01-14 02:15:53,617 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-14 02:15:53,655 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 02:15:53,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:15:53,656 INFO L168 Benchmark]: Toolchain (without parser) took 2614.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -73.6 MB). Peak memory consumption was 55.9 MB. Max. memory is 11.5 GB. [2019-01-14 02:15:53,657 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. [2019-01-14 02:15:53,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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. [2019-01-14 02:15:53,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.32 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. [2019-01-14 02:15:53,660 INFO L168 Benchmark]: Boogie Preprocessor took 24.70 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. [2019-01-14 02:15:53,660 INFO L168 Benchmark]: RCFGBuilder took 305.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:15:53,662 INFO L168 Benchmark]: BuchiAutomizer took 1845.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. [2019-01-14 02:15:53,663 INFO L168 Benchmark]: Witness Printer took 42.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:15:53,672 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 343.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 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 46.32 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 24.70 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 305.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1845.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. * Witness Printer took 42.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * x + 11 and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@92c6f3c=0, \result=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x <= 10 Loop: [L18] COND FALSE !(x > 6) [L17] COND TRUE x <= 10 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...