./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:38:40,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:38:40,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:38:40,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:38:40,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:38:40,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:38:40,193 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:38:40,196 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:38:40,199 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:38:40,202 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:38:40,204 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:38:40,205 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:38:40,206 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:38:40,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:38:40,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:38:40,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:38:40,218 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:38:40,222 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:38:40,226 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:38:40,229 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:38:40,231 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:38:40,234 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:38:40,238 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:38:40,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:38:40,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:38:40,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:38:40,242 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:38:40,243 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:38:40,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:38:40,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:38:40,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:38:40,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:38:40,245 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:38:40,245 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:38:40,247 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:38:40,247 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:38:40,248 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:38:40,269 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:38:40,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:38:40,270 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:38:40,271 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:38:40,271 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:38:40,271 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:38:40,271 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:38:40,271 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:38:40,271 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:38:40,272 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:38:40,272 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:38:40,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:38:40,272 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:38:40,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:38:40,273 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:38:40,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:38:40,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:38:40,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:38:40,274 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:38:40,274 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:38:40,275 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:38:40,275 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:38:40,276 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:38:40,276 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 -> da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 [2019-01-01 21:38:40,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:38:40,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:38:40,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:38:40,334 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:38:40,335 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:38:40,336 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c [2019-01-01 21:38:40,415 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f285f01/be61ac936c7a4ea29276a85f6701bb2d/FLAG15ab418ba [2019-01-01 21:38:40,841 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:38:40,842 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c [2019-01-01 21:38:40,849 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f285f01/be61ac936c7a4ea29276a85f6701bb2d/FLAG15ab418ba [2019-01-01 21:38:41,225 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f285f01/be61ac936c7a4ea29276a85f6701bb2d [2019-01-01 21:38:41,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:38:41,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:38:41,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:38:41,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:38:41,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:38:41,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22170dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41, skipping insertion in model container [2019-01-01 21:38:41,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:38:41,267 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:38:41,505 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:38:41,511 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:38:41,532 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:38:41,550 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:38:41,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41 WrapperNode [2019-01-01 21:38:41,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:38:41,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:38:41,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:38:41,552 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:38:41,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:38:41,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:38:41,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:38:41,595 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:38:41,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... [2019-01-01 21:38:41,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:38:41,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:38:41,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:38:41,614 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:38:41,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:38:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:38:41,945 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:38:41,946 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-01 21:38:41,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:38:41 BoogieIcfgContainer [2019-01-01 21:38:41,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:38:41,948 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:38:41,948 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:38:41,952 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:38:41,952 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:38:41,953 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:38:41" (1/3) ... [2019-01-01 21:38:41,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43a47a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:38:41, skipping insertion in model container [2019-01-01 21:38:41,954 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:38:41,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:38:41" (2/3) ... [2019-01-01 21:38:41,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43a47a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:38:41, skipping insertion in model container [2019-01-01 21:38:41,955 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:38:41,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:38:41" (3/3) ... [2019-01-01 21:38:41,957 INFO L375 chiAutomizerObserver]: Analyzing ICFG c.01_assume_true-termination_true-no-overflow.c [2019-01-01 21:38:42,022 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:38:42,023 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:38:42,023 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:38:42,023 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:38:42,023 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:38:42,023 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:38:42,024 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:38:42,024 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:38:42,024 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:38:42,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-01-01 21:38:42,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 21:38:42,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:38:42,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:38:42,069 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:38:42,070 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:38:42,070 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:38:42,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-01-01 21:38:42,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 21:38:42,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:38:42,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:38:42,072 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:38:42,072 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:38:42,080 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L9-2true [2019-01-01 21:38:42,081 INFO L796 eck$LassoCheckResult]: Loop: 6#L9-2true assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 10#L11-2true assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 8#L11-3true main_~x~0 := main_~x~0 - 1; 6#L9-2true [2019-01-01 21:38:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 21:38:42,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:42,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:42,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:42,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:42,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-01-01 21:38:42,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:42,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:42,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:42,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:42,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-01-01 21:38:42,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:42,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:42,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:42,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:42,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:42,470 WARN L181 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2019-01-01 21:38:42,530 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:38:42,532 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:38:42,532 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:38:42,532 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:38:42,532 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:38:42,532 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:42,533 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:38:42,533 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:38:42,533 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-01 21:38:42,533 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:38:42,534 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:38:42,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:42,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:42,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:42,996 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:38:42,997 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:43,003 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:43,003 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:38:43,027 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:38:43,028 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:43,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:43,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:38:43,055 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:38:43,055 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:43,060 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:43,060 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:43,094 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:38:43,094 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:38:43,122 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:38:43,124 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:38:43,124 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:38:43,124 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:38:43,124 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:38:43,124 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:38:43,124 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:43,124 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:38:43,125 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:38:43,125 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-01 21:38:43,125 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:38:43,125 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:38:43,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:43,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:43,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:43,312 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:38:43,317 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:38:43,318 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:38:43,320 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:38:43,320 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:38:43,321 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:38:43,321 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:38:43,326 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:38:43,326 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:38:43,334 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:38:43,335 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:38:43,336 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:38:43,336 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:38:43,336 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:38:43,337 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:38:43,337 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:38:43,338 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:38:43,338 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:38:43,354 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:38:43,370 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:38:43,371 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-01 21:38:43,374 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:38:43,374 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:38:43,374 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:38:43,375 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-01-01 21:38:43,379 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:38:43,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:43,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:43,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:43,638 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-01 21:38:43,639 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-01-01 21:38:43,864 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-01-01 21:38:43,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-01-01 21:38:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:38:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-01-01 21:38:43,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-01-01 21:38:43,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:43,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-01-01 21:38:43,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:43,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-01-01 21:38:43,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:43,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-01-01 21:38:43,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:38:43,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-01-01 21:38:43,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-01-01 21:38:43,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-01-01 21:38:43,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-01-01 21:38:43,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 21:38:43,893 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-01 21:38:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-01-01 21:38:43,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-01-01 21:38:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-01 21:38:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-01-01 21:38:43,934 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-01-01 21:38:43,934 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-01-01 21:38:43,934 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:38:43,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-01-01 21:38:43,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:38:43,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:38:43,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:38:43,937 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 21:38:43,937 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:38:43,937 INFO L794 eck$LassoCheckResult]: Stem: 70#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 71#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 73#L11-2 [2019-01-01 21:38:43,937 INFO L796 eck$LassoCheckResult]: Loop: 73#L11-2 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 73#L11-2 [2019-01-01 21:38:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:43,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-01 21:38:43,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:43,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:43,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:43,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:43,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-01-01 21:38:43,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:43,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:43,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:43,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:43,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-01-01 21:38:43,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:43,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:43,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:43,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:43,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:44,069 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:38:44,069 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:38:44,070 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:38:44,070 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:38:44,070 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:38:44,070 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:44,071 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:38:44,071 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:38:44,071 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-01 21:38:44,071 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:38:44,071 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:38:44,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:44,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:44,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:44,179 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:38:44,179 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 [2019-01-01 21:38:44,183 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:44,183 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:38:44,206 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:38:44,207 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:44,224 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:44,224 INFO L163 nArgumentSynthesizer]: Using integer mode. 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) [2019-01-01 21:38:44,276 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:38:44,276 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:44,329 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:38:44,332 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:38:44,333 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:38:44,333 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:38:44,333 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:38:44,333 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:38:44,333 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:44,333 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:38:44,334 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:38:44,334 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-01 21:38:44,334 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:38:44,334 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:38:44,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:44,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:44,512 WARN L181 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-01-01 21:38:44,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:44,752 WARN L181 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-01-01 21:38:44,804 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:38:44,805 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:38:44,805 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:38:44,808 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:38:44,809 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:38:44,809 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:38:44,809 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:38:44,812 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:38:44,812 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:38:44,819 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:38:44,820 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:38:44,821 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:38:44,821 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:38:44,821 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:38:44,821 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:38:44,821 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:38:44,824 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:38:44,824 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:38:44,834 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:38:44,840 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:38:44,841 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-01 21:38:44,841 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:38:44,842 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:38:44,842 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:38:44,842 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2019-01-01 21:38:44,844 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:38:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:44,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:44,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:44,932 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:38:44,932 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-01-01 21:38:44,964 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-01-01 21:38:44,966 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 [2019-01-01 21:38:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-01-01 21:38:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-01-01 21:38:44,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-01-01 21:38:44,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:44,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-01-01 21:38:44,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:44,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-01-01 21:38:44,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:44,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-01-01 21:38:44,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:38:44,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-01-01 21:38:44,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-01-01 21:38:44,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-01-01 21:38:44,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-01-01 21:38:44,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-01 21:38:44,971 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-01-01 21:38:44,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-01-01 21:38:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-01-01 21:38:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-01 21:38:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-01-01 21:38:44,973 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-01-01 21:38:44,973 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-01-01 21:38:44,973 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-01 21:38:44,973 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-01-01 21:38:44,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:38:44,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:38:44,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:38:44,977 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-01-01 21:38:44,977 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:38:44,977 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 119#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 120#L11-2 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 123#L11-3 main_~x~0 := main_~x~0 - 1; 121#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 122#L11-2 [2019-01-01 21:38:44,977 INFO L796 eck$LassoCheckResult]: Loop: 122#L11-2 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 122#L11-2 [2019-01-01 21:38:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:44,979 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-01-01 21:38:44,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:44,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:44,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:44,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:44,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-01-01 21:38:45,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:45,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:45,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:45,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:38:45,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:38:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2019-01-01 21:38:45,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:38:45,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:38:45,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:45,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:38:45,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:38:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:45,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-01 21:38:45,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-01 21:38:45,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:38:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:45,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:45,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-01 21:38:45,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-01-01 21:38:45,485 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:38:45,486 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:38:45,486 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:38:45,486 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:38:45,487 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-01 21:38:45,487 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:45,487 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:38:45,487 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:38:45,488 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-01 21:38:45,488 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:38:45,488 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:38:45,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:45,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:45,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:45,613 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:38:45,614 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 [2019-01-01 21:38:45,618 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:45,619 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:38:45,639 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-01 21:38:45,639 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 [2019-01-01 21:38:45,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-01 21:38:45,646 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2019-01-01 21:38:45,671 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-01 21:38:45,672 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-01 21:38:45,698 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-01 21:38:45,701 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:38:45,701 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:38:45,701 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:38:45,701 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:38:45,702 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:38:45,702 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:38:45,702 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:38:45,702 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:38:45,703 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-01 21:38:45,703 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:38:45,703 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:38:45,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:45,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:45,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:38:45,810 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:38:45,810 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:38:45,811 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:38:45,812 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:38:45,812 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:38:45,812 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:38:45,813 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:38:45,816 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:38:45,816 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:38:45,832 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:38:45,833 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-01 21:38:45,836 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:38:45,836 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:38:45,836 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:38:45,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:38:45,837 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:38:45,838 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:38:45,838 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:38:45,846 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:38:45,857 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-01 21:38:45,857 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-01 21:38:45,858 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:38:45,858 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-01 21:38:45,858 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:38:45,858 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2019-01-01 21:38:45,860 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-01 21:38:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:45,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:45,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:45,907 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:38:45,907 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-01-01 21:38:45,919 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-01-01 21:38:45,921 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 [2019-01-01 21:38:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-01-01 21:38:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-01-01 21:38:45,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-01-01 21:38:45,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:45,922 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-01 21:38:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:45,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:45,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:45,980 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:38:45,980 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-01-01 21:38:46,011 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-01-01 21:38:46,012 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 [2019-01-01 21:38:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-01-01 21:38:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-01-01 21:38:46,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-01-01 21:38:46,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:46,013 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-01 21:38:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:38:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:46,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:38:46,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:38:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:38:46,098 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-01 21:38:46,098 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-01-01 21:38:46,117 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-01-01 21:38:46,119 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 [2019-01-01 21:38:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-01-01 21:38:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-01-01 21:38:46,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-01-01 21:38:46,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:46,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-01-01 21:38:46,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:46,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-01-01 21:38:46,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:38:46,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-01-01 21:38:46,122 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:38:46,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-01-01 21:38:46,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:38:46,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:38:46,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:38:46,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:38:46,123 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:38:46,123 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:38:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-01-01 21:38:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-01-01 21:38:46,128 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2019-01-01 21:38:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:38:46,131 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-01-01 21:38:46,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-01 21:38:46,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-01-01 21:38:46,132 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:38:46,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-01-01 21:38:46,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:38:46,132 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:38:46,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:38:46,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:38:46,132 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:38:46,132 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:38:46,133 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:38:46,133 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-01 21:38:46,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-01 21:38:46,133 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:38:46,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-01 21:38:46,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:38:46 BoogieIcfgContainer [2019-01-01 21:38:46,140 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:38:46,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:38:46,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:38:46,141 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:38:46,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:38:41" (3/4) ... [2019-01-01 21:38:46,145 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 21:38:46,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:38:46,146 INFO L168 Benchmark]: Toolchain (without parser) took 4916.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 951.4 MB in the beginning and 895.9 MB in the end (delta: 55.5 MB). Peak memory consumption was 180.8 MB. Max. memory is 11.5 GB. [2019-01-01 21:38:46,148 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:38:46,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:38:46,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.53 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:38:46,150 INFO L168 Benchmark]: Boogie Preprocessor took 18.62 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:38:46,150 INFO L168 Benchmark]: RCFGBuilder took 333.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:38:46,151 INFO L168 Benchmark]: BuchiAutomizer took 4192.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.9 MB in the end (delta: 214.1 MB). Peak memory consumption was 214.1 MB. Max. memory is 11.5 GB. [2019-01-01 21:38:46,152 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 1.2 GB. Free memory is still 895.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:38:46,156 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.67 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 42.53 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 18.62 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 333.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4192.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.9 MB in the end (delta: 214.1 MB). Peak memory consumption was 214.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.03 ms. Allocated memory is still 1.2 GB. Free memory is still 895.9 MB. 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 25 SDslu, 9 SDs, 0 SdLazy, 32 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf98 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...