./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/Flip2_false-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/Flip2_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 cda310f9ec541637625c4cf2e3662e22b6979f61 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-91b1670 [2018-11-28 23:17:13,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:17:13,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:17:13,937 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:17:13,938 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:17:13,939 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:17:13,940 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:17:13,943 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:17:13,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:17:13,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:17:13,946 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:17:13,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:17:13,951 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:17:13,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:17:13,958 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:17:13,959 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:17:13,965 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:17:13,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:17:13,969 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:17:13,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:17:13,972 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:17:13,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:17:13,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:17:13,977 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:17:13,977 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:17:13,978 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:17:13,979 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:17:13,980 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:17:13,981 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:17:13,982 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:17:13,982 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:17:13,983 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:17:13,983 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:17:13,984 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:17:13,985 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:17:13,986 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:17:13,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:17:14,004 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:17:14,005 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:17:14,006 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:17:14,006 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:17:14,007 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:17:14,007 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:17:14,007 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:17:14,007 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:17:14,007 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:17:14,007 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:17:14,008 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:17:14,008 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:17:14,008 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:17:14,008 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:17:14,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:17:14,009 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:17:14,009 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:17:14,009 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:17:14,009 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:17:14,009 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:17:14,009 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:17:14,010 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:17:14,010 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:17:14,010 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:17:14,010 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:17:14,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:17:14,011 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:17:14,011 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:17:14,012 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:17:14,012 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 -> cda310f9ec541637625c4cf2e3662e22b6979f61 [2018-11-28 23:17:14,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:17:14,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:17:14,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:17:14,075 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:17:14,076 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:17:14,077 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/Flip2_false-termination_true-no-overflow.c [2018-11-28 23:17:14,162 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5395eddeb/5faaa22ca25f49918c14292b4797b804/FLAG6afaf9915 [2018-11-28 23:17:14,630 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:17:14,631 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/Flip2_false-termination_true-no-overflow.c [2018-11-28 23:17:14,636 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5395eddeb/5faaa22ca25f49918c14292b4797b804/FLAG6afaf9915 [2018-11-28 23:17:15,005 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5395eddeb/5faaa22ca25f49918c14292b4797b804 [2018-11-28 23:17:15,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:17:15,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:17:15,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:17:15,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:17:15,016 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:17:15,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5251650b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15, skipping insertion in model container [2018-11-28 23:17:15,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:17:15,049 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:17:15,285 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:17:15,292 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:17:15,313 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:17:15,332 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:17:15,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15 WrapperNode [2018-11-28 23:17:15,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:17:15,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:17:15,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:17:15,335 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:17:15,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:17:15,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:17:15,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:17:15,381 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:17:15,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (1/1) ... [2018-11-28 23:17:15,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:17:15,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:17:15,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:17:15,412 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:17:15,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (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 23:17:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:17:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:17:15,753 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:17:15,754 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:17:15,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:15 BoogieIcfgContainer [2018-11-28 23:17:15,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:17:15,755 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:17:15,755 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:17:15,759 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:17:15,760 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:15,761 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:17:15" (1/3) ... [2018-11-28 23:17:15,762 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10899deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:17:15, skipping insertion in model container [2018-11-28 23:17:15,762 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:15,763 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:15" (2/3) ... [2018-11-28 23:17:15,764 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10899deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:17:15, skipping insertion in model container [2018-11-28 23:17:15,764 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:15,764 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:15" (3/3) ... [2018-11-28 23:17:15,767 INFO L375 chiAutomizerObserver]: Analyzing ICFG Flip2_false-termination_true-no-overflow.c [2018-11-28 23:17:15,847 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:17:15,848 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:17:15,848 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:17:15,848 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:17:15,848 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:17:15,848 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:17:15,848 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:17:15,852 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:17:15,852 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:17:15,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:17:15,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:17:15,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:15,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:15,921 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:15,921 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:17:15,922 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:17:15,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:17:15,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:17:15,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:15,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:15,924 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:15,925 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:17:15,939 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 6#L19-2true [2018-11-28 23:17:15,939 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~i~0 > 0 && main_~j~0 > 0); 10#L14true assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 6#L19-2true [2018-11-28 23:17:15,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:15,956 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:17:15,966 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:15,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:16,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:16,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:16,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:16,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-28 23:17:16,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:16,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:16,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:16,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:16,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:16,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 23:17:16,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:16,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:16,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:16,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:16,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:16,276 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:16,277 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:16,277 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:16,277 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:16,278 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:16,278 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:16,278 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:16,278 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:16,278 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:17:16,278 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:16,279 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:16,302 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 23:17:16,340 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 23:17:16,344 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 23:17:16,741 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:16,742 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 23:17:16,747 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:16,747 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:16,788 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:16,789 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 23:17:16,795 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:16,795 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:16,818 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:16,818 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 23:17:16,823 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:16,824 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 23:17:16,855 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:16,855 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:17,271 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:17,273 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:17,273 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:17,273 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:17,273 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:17,273 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:17,274 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:17,274 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:17,274 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:17,274 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:17:17,274 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:17,274 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:17,276 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 23:17:17,283 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 23:17:17,297 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 23:17:17,537 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 23:17:17,539 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:17,545 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:17,547 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 23:17:17,548 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:17,549 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:17,549 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:17,549 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:17,554 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:17,554 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:17,564 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:17,564 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 23:17:17,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:17,565 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:17,566 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:17,566 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:17,569 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:17,569 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:17,578 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:17,579 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 23:17:17,580 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:17,580 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:17,581 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:17,581 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:17,581 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:17,583 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:17,583 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:17,601 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:17,613 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:17:17,613 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:17,615 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:17,616 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:17,616 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:17,616 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 23:17:17,618 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:17,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:17,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:17,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:17,885 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 23:17:17,906 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 [2018-11-28 23:17:17,908 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 23:17:18,121 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 30 states and 43 transitions. Complement of second has 8 states. [2018-11-28 23:17:18,123 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 23:17:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:17:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2018-11-28 23:17:18,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 23:17:18,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:18,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:17:18,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:18,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 23:17:18,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:18,130 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 43 transitions. [2018-11-28 23:17:18,133 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:18,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 19 transitions. [2018-11-28 23:17:18,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:17:18,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-28 23:17:18,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-28 23:17:18,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:18,140 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-28 23:17:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-28 23:17:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-28 23:17:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:17:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-11-28 23:17:18,167 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-28 23:17:18,167 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-28 23:17:18,167 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:17:18,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-11-28 23:17:18,168 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:17:18,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:18,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:18,170 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:17:18,170 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:18,171 INFO L794 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 76#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 78#L14 [2018-11-28 23:17:18,171 INFO L796 eck$LassoCheckResult]: Loop: 78#L14 assume !(main_~i~0 < main_~j~0); 84#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 77#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 78#L14 [2018-11-28 23:17:18,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:17:18,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:18,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:18,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:18,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:18,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:18,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:18,181 INFO L82 PathProgramCache]: Analyzing trace with hash 44836, now seen corresponding path program 1 times [2018-11-28 23:17:18,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:18,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:18,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:18,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:18,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:18,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash 29865627, now seen corresponding path program 1 times [2018-11-28 23:17:18,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:18,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:18,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:18,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:18,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:18,294 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:18,294 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:18,294 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:18,294 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:18,295 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:18,295 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:18,295 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:18,295 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:18,295 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:17:18,295 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:18,295 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:18,297 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 23:17:18,303 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 23:17:18,307 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 23:17:18,731 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 23:17:18,733 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:18,733 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 23:17:18,745 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:18,746 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:18,791 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:18,791 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) [2018-11-28 23:17:18,804 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:18,804 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:18,835 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:18,835 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 23:17:18,842 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:18,842 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 23:17:18,877 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:18,877 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:18,962 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:18,965 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:18,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:18,965 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:18,965 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:18,965 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:18,966 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:18,966 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:18,966 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:18,966 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:17:18,966 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:18,966 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:18,970 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 23:17:18,975 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 23:17:18,987 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 23:17:19,149 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:19,150 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:19,150 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 23:17:19,151 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:19,151 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:19,153 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:19,153 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:19,156 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:19,156 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:19,161 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:19,162 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 23:17:19,163 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:19,163 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:19,163 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:19,163 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:19,167 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:19,167 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:19,173 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:19,174 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 23:17:19,175 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:19,175 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:19,175 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:19,176 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:19,176 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:19,177 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:19,178 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:19,185 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:19,192 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:17:19,192 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:17:19,193 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:19,193 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:19,193 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:19,194 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:19,194 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:19,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:19,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:19,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:19,384 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 23:17:19,385 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 [2018-11-28 23:17:19,385 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-28 23:17:19,467 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 34 states and 49 transitions. Complement of second has 7 states. [2018-11-28 23:17:19,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-28 23:17:19,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 23:17:19,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:19,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:17:19,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:19,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:17:19,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:19,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2018-11-28 23:17:19,474 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 23:17:19,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 30 states and 44 transitions. [2018-11-28 23:17:19,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-28 23:17:19,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-28 23:17:19,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2018-11-28 23:17:19,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:19,477 INFO L705 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-11-28 23:17:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2018-11-28 23:17:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-11-28 23:17:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 23:17:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2018-11-28 23:17:19,482 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2018-11-28 23:17:19,482 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2018-11-28 23:17:19,482 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:17:19,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 37 transitions. [2018-11-28 23:17:19,484 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 23:17:19,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:19,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:19,485 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:17:19,485 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:19,485 INFO L794 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 161#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 173#L14 assume !(main_~i~0 < main_~j~0); 166#L19 [2018-11-28 23:17:19,485 INFO L796 eck$LassoCheckResult]: Loop: 166#L19 assume main_~i~0 > main_~j~0;main_~j~0 := main_~i~0; 167#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 179#L14 assume !(main_~i~0 < main_~j~0); 166#L19 [2018-11-28 23:17:19,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:19,486 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 23:17:19,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:19,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:19,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:19,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:19,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:19,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:19,496 INFO L82 PathProgramCache]: Analyzing trace with hash 47414, now seen corresponding path program 1 times [2018-11-28 23:17:19,496 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:19,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:19,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:19,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:19,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:19,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 1 times [2018-11-28 23:17:19,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:19,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:19,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:19,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:19,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:19,556 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:19,556 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:19,556 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:19,557 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:19,558 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:19,558 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:19,558 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:19,558 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:19,558 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:17:19,558 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:19,558 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:19,559 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 23:17:19,566 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 23:17:19,569 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 23:17:19,666 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:19,666 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:19,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:19,670 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:19,692 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:19,692 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:19,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:19,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:19,732 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:19,732 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:19,738 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:19,738 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:19,764 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:19,765 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:19,939 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:19,941 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:19,941 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:19,941 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:19,941 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:19,942 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:19,942 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:19,942 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:19,942 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:19,942 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:17:19,942 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:19,942 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:19,945 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 23:17:19,953 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 23:17:19,965 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 23:17:20,048 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:20,048 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:20,049 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 23:17:20,051 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:20,052 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:20,052 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:20,052 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:20,054 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:20,054 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:20,059 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:20,060 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 23:17:20,060 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:20,061 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:20,065 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:20,065 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:20,065 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:20,068 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:20,069 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:20,077 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:20,089 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:17:20,092 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:20,092 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:20,092 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:20,093 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:20,093 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 23:17:20,095 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:20,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:20,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:20,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:20,205 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 23:17:20,206 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 [2018-11-28 23:17:20,206 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 37 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-28 23:17:20,231 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 37 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 91 transitions. Complement of second has 5 states. [2018-11-28 23:17:20,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:17:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-28 23:17:20,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 23:17:20,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:20,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:17:20,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:20,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:17:20,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:20,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 91 transitions. [2018-11-28 23:17:20,238 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:17:20,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 55 states and 80 transitions. [2018-11-28 23:17:20,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 23:17:20,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-11-28 23:17:20,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2018-11-28 23:17:20,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:20,241 INFO L705 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2018-11-28 23:17:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2018-11-28 23:17:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2018-11-28 23:17:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 23:17:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 60 transitions. [2018-11-28 23:17:20,246 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2018-11-28 23:17:20,246 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2018-11-28 23:17:20,246 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:17:20,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 60 transitions. [2018-11-28 23:17:20,248 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:17:20,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:20,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:20,249 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 23:17:20,249 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:17:20,249 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 286#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 316#L14 assume !(main_~i~0 < main_~j~0); 291#L19 assume main_~i~0 > main_~j~0;main_~j~0 := main_~i~0; 292#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 304#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 299#L19-2 [2018-11-28 23:17:20,249 INFO L796 eck$LassoCheckResult]: Loop: 299#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 309#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 299#L19-2 [2018-11-28 23:17:20,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:20,250 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 1 times [2018-11-28 23:17:20,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:20,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:20,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:20,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:20,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:20,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:17:20,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:17:20,309 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:17:20,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-28 23:17:20,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:20,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:20,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:20,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:20,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:20,386 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:20,386 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:20,386 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:20,386 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:20,386 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:20,386 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:20,387 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:20,387 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:20,387 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:17:20,387 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:20,387 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:20,389 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 23:17:20,452 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 23:17:20,478 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 23:17:20,577 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:20,577 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:20,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:20,582 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:20,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:20,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:22,090 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:22,092 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:22,093 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:22,093 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:22,093 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:22,093 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:22,093 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:22,093 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:22,093 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:22,094 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:17:22,094 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:22,094 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:22,096 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 23:17:22,112 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 23:17:22,120 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 23:17:22,208 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:22,208 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:22,209 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 23:17:22,210 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:22,210 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:22,210 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:22,211 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:22,211 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:22,211 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:22,212 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:22,222 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:22,226 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:17:22,226 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:22,227 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:22,227 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:22,227 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:22,227 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 23:17:22,227 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:22,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:22,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:22,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:22,297 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 23:17:22,298 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 [2018-11-28 23:17:22,298 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 60 transitions. cyclomatic complexity: 29 Second operand 3 states. [2018-11-28 23:17:22,336 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 60 transitions. cyclomatic complexity: 29. Second operand 3 states. Result 73 states and 104 transitions. Complement of second has 7 states. [2018-11-28 23:17:22,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:17:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:17:22,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:17:22,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:22,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-28 23:17:22,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:22,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-28 23:17:22,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:22,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 104 transitions. [2018-11-28 23:17:22,346 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 23:17:22,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 57 states and 83 transitions. [2018-11-28 23:17:22,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-28 23:17:22,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-28 23:17:22,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 83 transitions. [2018-11-28 23:17:22,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:22,350 INFO L705 BuchiCegarLoop]: Abstraction has 57 states and 83 transitions. [2018-11-28 23:17:22,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 83 transitions. [2018-11-28 23:17:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2018-11-28 23:17:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 23:17:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2018-11-28 23:17:22,356 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2018-11-28 23:17:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:17:22,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:17:22,360 INFO L87 Difference]: Start difference. First operand 42 states and 62 transitions. Second operand 3 states. [2018-11-28 23:17:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:17:22,382 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2018-11-28 23:17:22,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:17:22,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 69 transitions. [2018-11-28 23:17:22,388 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 15 [2018-11-28 23:17:22,389 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 46 states and 63 transitions. [2018-11-28 23:17:22,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-28 23:17:22,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-28 23:17:22,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 63 transitions. [2018-11-28 23:17:22,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:22,392 INFO L705 BuchiCegarLoop]: Abstraction has 46 states and 63 transitions. [2018-11-28 23:17:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 63 transitions. [2018-11-28 23:17:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-11-28 23:17:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 23:17:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2018-11-28 23:17:22,396 INFO L728 BuchiCegarLoop]: Abstraction has 44 states and 61 transitions. [2018-11-28 23:17:22,396 INFO L608 BuchiCegarLoop]: Abstraction has 44 states and 61 transitions. [2018-11-28 23:17:22,396 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:17:22,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 61 transitions. [2018-11-28 23:17:22,397 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 15 [2018-11-28 23:17:22,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:22,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:22,400 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 23:17:22,400 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:22,400 INFO L794 eck$LassoCheckResult]: Stem: 539#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 540#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 567#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 568#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 570#L14 assume !(main_~i~0 < main_~j~0); 581#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 541#L19-2 [2018-11-28 23:17:22,400 INFO L796 eck$LassoCheckResult]: Loop: 541#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 542#L14 assume !(main_~i~0 < main_~j~0); 545#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 541#L19-2 [2018-11-28 23:17:22,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash 925765420, now seen corresponding path program 1 times [2018-11-28 23:17:22,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:22,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:22,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:22,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:22,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:22,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:17:22,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:17:22,482 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:17:22,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:22,482 INFO L82 PathProgramCache]: Analyzing trace with hash 39886, now seen corresponding path program 2 times [2018-11-28 23:17:22,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:22,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:22,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:22,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:22,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:22,526 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:22,526 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:22,526 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:22,526 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:22,526 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:22,526 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:22,527 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:22,527 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:22,527 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:17:22,527 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:22,527 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:22,529 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 23:17:22,541 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 23:17:22,549 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 23:17:22,607 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:22,607 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:17:22,622 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:22,623 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:22,653 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:22,653 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:22,677 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:22,679 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:22,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:22,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:22,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:22,679 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:22,679 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:22,680 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:22,680 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:22,680 INFO L131 ssoRankerPreferences]: Filename of dumped script: Flip2_false-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:17:22,680 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:22,680 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:22,681 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 23:17:22,687 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 23:17:22,700 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 23:17:22,788 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:22,788 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:22,788 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 23:17:22,789 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:22,789 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:22,789 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:22,790 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:22,791 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:22,791 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:22,793 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:22,794 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 23:17:22,794 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:22,794 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:22,795 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:22,795 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:22,795 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:22,796 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:22,796 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:22,799 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:22,802 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:17:22,802 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:17:22,803 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:22,803 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:22,803 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:22,803 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:22,803 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:22,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:22,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:22,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:22,908 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 23:17:22,908 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 [2018-11-28 23:17:22,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44 states and 61 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-11-28 23:17:22,943 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44 states and 61 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 81 states and 106 transitions. Complement of second has 5 states. [2018-11-28 23:17:22,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:17:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-28 23:17:22,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:17:22,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:22,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:17:22,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:22,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 23:17:22,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:22,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 106 transitions. [2018-11-28 23:17:22,950 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-11-28 23:17:22,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 60 states and 81 transitions. [2018-11-28 23:17:22,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 23:17:22,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-28 23:17:22,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2018-11-28 23:17:22,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:22,953 INFO L705 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2018-11-28 23:17:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2018-11-28 23:17:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2018-11-28 23:17:22,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 23:17:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2018-11-28 23:17:22,961 INFO L728 BuchiCegarLoop]: Abstraction has 50 states and 69 transitions. [2018-11-28 23:17:22,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:17:22,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:17:22,961 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 3 states. [2018-11-28 23:17:22,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:17:22,986 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-11-28 23:17:22,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:17:22,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 67 transitions. [2018-11-28 23:17:22,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:17:22,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 49 states and 62 transitions. [2018-11-28 23:17:22,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-28 23:17:22,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-28 23:17:22,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 62 transitions. [2018-11-28 23:17:22,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:22,990 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 62 transitions. [2018-11-28 23:17:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 62 transitions. [2018-11-28 23:17:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2018-11-28 23:17:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 23:17:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-28 23:17:22,995 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 23:17:22,995 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 23:17:22,995 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:17:22,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-11-28 23:17:22,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:17:22,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:22,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:22,997 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 23:17:22,997 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2018-11-28 23:17:22,997 INFO L794 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~j~0, main_~t~0;havoc main_~i~0;havoc main_~j~0;havoc main_~t~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~t~0 := 0; 815#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 835#L14 assume !(main_~i~0 < main_~j~0); 823#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 824#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 817#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 828#L19-2 [2018-11-28 23:17:22,998 INFO L796 eck$LassoCheckResult]: Loop: 828#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 826#L14 assume !(main_~i~0 < main_~j~0); 827#L19 assume main_~i~0 > main_~j~0;main_~j~0 := main_~i~0; 838#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 841#L14 assume !(main_~i~0 < main_~j~0); 821#L19 assume !(main_~i~0 > main_~j~0);main_~i~0 := main_~i~0 - 1; 822#L19-2 assume !!(main_~i~0 > 0 && main_~j~0 > 0); 840#L14 assume main_~i~0 < main_~j~0;main_~t~0 := main_~i~0;main_~i~0 := main_~j~0;main_~j~0 := main_~t~0; 828#L19-2 [2018-11-28 23:17:22,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:22,998 INFO L82 PathProgramCache]: Analyzing trace with hash 925834450, now seen corresponding path program 2 times [2018-11-28 23:17:22,998 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:22,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:23,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:23,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:23,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:23,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash -606540634, now seen corresponding path program 1 times [2018-11-28 23:17:23,041 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:23,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:23,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:23,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:23,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:23,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash -66410377, now seen corresponding path program 1 times [2018-11-28 23:17:23,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:23,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:23,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:23,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:23,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:23,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:17:23 BoogieIcfgContainer [2018-11-28 23:17:23,297 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:17:23,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:17:23,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:17:23,298 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:17:23,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:15" (3/4) ... [2018-11-28 23:17:23,304 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:17:23,359 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:17:23,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:17:23,360 INFO L168 Benchmark]: Toolchain (without parser) took 8351.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:23,362 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 23:17:23,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.04 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. [2018-11-28 23:17:23,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.12 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 23:17:23,364 INFO L168 Benchmark]: Boogie Preprocessor took 30.42 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 23:17:23,364 INFO L168 Benchmark]: RCFGBuilder took 342.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:23,365 INFO L168 Benchmark]: BuchiAutomizer took 7542.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -50.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:23,367 INFO L168 Benchmark]: Witness Printer took 61.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:23,371 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 322.04 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 46.12 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 30.42 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 342.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7542.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -50.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 61.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i + -1 * j and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 37 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 6.0s. Construction of modules took 0.3s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 44 states and ocurred in iteration 4. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 33 SDslu, 6 SDs, 0 SdLazy, 81 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax176 hnf97 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf92 smp100 dnf100 smp100 tf109 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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 {t=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d35356d=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b4e2c6a=0, i=2, j=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...