./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 45b185c6c694406b0734db5727dff1b8fd93ebcf ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:25:20,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:25:20,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:25:20,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:25:20,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:25:20,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:25:20,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:25:20,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:25:20,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:25:20,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:25:20,429 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:25:20,429 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:25:20,430 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:25:20,432 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:25:20,433 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:25:20,435 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:25:20,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:25:20,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:25:20,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:25:20,447 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:25:20,448 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:25:20,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:25:20,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:25:20,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:25:20,458 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:25:20,459 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:25:20,460 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:25:20,464 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:25:20,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:25:20,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:25:20,471 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:25:20,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:25:20,472 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:25:20,472 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:25:20,476 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:25:20,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:25:20,480 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 23:25:20,505 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:25:20,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:25:20,507 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:25:20,507 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:25:20,507 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:25:20,508 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:25:20,508 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:25:20,509 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:25:20,509 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:25:20,509 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:25:20,509 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:25:20,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:25:20,510 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:25:20,510 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:25:20,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:25:20,510 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:25:20,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:25:20,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:25:20,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:25:20,511 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:25:20,512 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:25:20,512 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:25:20,512 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:25:20,512 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:25:20,512 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:25:20,513 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:25:20,513 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:25:20,513 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:25:20,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:25:20,514 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:25:20,514 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:25:20,515 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:25:20,515 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45b185c6c694406b0734db5727dff1b8fd93ebcf [2018-11-28 23:25:20,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:25:20,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:25:20,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:25:20,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:25:20,585 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:25:20,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 23:25:20,644 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7493edd2f/09f44ec6e39a473e882a880598cddcc3/FLAGe5879ae22 [2018-11-28 23:25:21,200 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:25:21,201 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 23:25:21,211 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7493edd2f/09f44ec6e39a473e882a880598cddcc3/FLAGe5879ae22 [2018-11-28 23:25:21,484 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7493edd2f/09f44ec6e39a473e882a880598cddcc3 [2018-11-28 23:25:21,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:25:21,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:25:21,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:25:21,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:25:21,496 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:25:21,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:21,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256fbe3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21, skipping insertion in model container [2018-11-28 23:25:21,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:21,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:25:21,550 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:25:21,776 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:25:21,781 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:25:21,844 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:25:21,864 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:25:21,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21 WrapperNode [2018-11-28 23:25:21,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:25:21,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:25:21,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:25:21,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:25:21,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:21,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:21,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:25:21,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:25:21,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:25:21,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:25:22,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (1/1) ... [2018-11-28 23:25:22,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:25:22,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:25:22,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:25:22,036 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:25:22,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (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 23:25:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:25:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:25:22,980 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:25:22,980 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-11-28 23:25:22,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:22 BoogieIcfgContainer [2018-11-28 23:25:22,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:25:22,982 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:25:22,982 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:25:22,985 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:25:22,986 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:25:22,986 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:25:21" (1/3) ... [2018-11-28 23:25:22,987 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a545d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:25:22, skipping insertion in model container [2018-11-28 23:25:22,987 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:25:22,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21" (2/3) ... [2018-11-28 23:25:22,988 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a545d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:25:22, skipping insertion in model container [2018-11-28 23:25:22,989 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:25:22,989 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:22" (3/3) ... [2018-11-28 23:25:22,991 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 23:25:23,063 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:25:23,064 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:25:23,064 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:25:23,064 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:25:23,066 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:25:23,066 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:25:23,066 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:25:23,067 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:25:23,067 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:25:23,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-11-28 23:25:23,113 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 23:25:23,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:23,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:23,121 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:25:23,121 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:23,121 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:25:23,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-11-28 23:25:23,129 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 23:25:23,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:23,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:23,130 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:25:23,130 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:23,138 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2018-11-28 23:25:23,138 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2018-11-28 23:25:23,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:23,145 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-11-28 23:25:23,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:23,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:23,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:23,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:23,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:23,317 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 23:25:23,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:25:23,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-28 23:25:23,325 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:23,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:23,325 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-11-28 23:25:23,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:23,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:23,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:23,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:23,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:23,468 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:25:23,569 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:25:23,582 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:23,584 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:23,584 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:23,584 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:23,585 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:23,586 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:23,586 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:23,586 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:23,586 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 23:25:23,587 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:23,587 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:23,614 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 23:25:23,703 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 23:25:24,062 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:24,128 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:24,129 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 23:25:24,135 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:24,135 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:24,169 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:24,169 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-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 23:25:24,192 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:24,192 INFO L163 nArgumentSynthesizer]: Using integer mode. 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) [2018-11-28 23:25:24,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:24,246 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:24,293 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:24,296 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:24,296 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:24,296 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:24,296 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:24,297 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:24,297 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:24,297 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:24,297 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:24,297 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 23:25:24,297 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:24,299 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:24,301 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 23:25:24,321 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 23:25:24,443 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:24,496 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:24,503 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:24,505 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 23:25:24,507 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:24,507 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:24,508 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:24,508 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:24,508 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:24,511 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:24,512 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:24,523 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:24,523 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 23:25:24,524 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:24,524 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:24,525 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:24,525 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:24,525 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:24,526 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:24,526 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:24,532 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:24,537 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:24,537 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:24,539 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:24,540 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:24,540 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:24,541 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 23:25:24,542 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:24,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:24,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:24,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:24,703 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 23:25:24,719 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:25:24,720 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2018-11-28 23:25:24,826 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2018-11-28 23:25:24,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:25:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2018-11-28 23:25:24,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 23:25:24,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:24,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:25:24,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:24,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:25:24,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:24,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2018-11-28 23:25:24,853 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-11-28 23:25:24,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2018-11-28 23:25:24,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-11-28 23:25:24,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-28 23:25:24,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-11-28 23:25:24,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:24,865 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-11-28 23:25:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-11-28 23:25:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-11-28 23:25:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 23:25:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-11-28 23:25:24,904 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-11-28 23:25:24,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:25:24,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:25:24,910 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-11-28 23:25:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:25,044 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-11-28 23:25:25,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:25:25,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-11-28 23:25:25,047 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 23:25:25,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 23:25:25,048 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 23:25:25,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 23:25:25,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-11-28 23:25:25,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:25:25,049 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 23:25:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-11-28 23:25:25,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 23:25:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 23:25:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 23:25:25,053 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 23:25:25,053 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 23:25:25,053 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:25:25,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-11-28 23:25:25,054 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 23:25:25,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:25,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:25,055 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:25:25,055 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:25,056 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2018-11-28 23:25:25,056 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2018-11-28 23:25:25,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-11-28 23:25:25,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:25,262 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-11-28 23:25:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:25:25,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:25:25,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:25:25,316 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:25,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,317 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-11-28 23:25:25,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,459 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:25:25,583 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:25:25,595 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:25,595 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:25,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:25,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:25,596 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:25,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,597 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:25,597 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:25,597 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 23:25:25,597 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:25,597 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:25,599 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 23:25:25,610 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 23:25:25,786 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:25,786 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:25:25,791 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:25,791 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:25,823 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:25,824 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:25:25,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:25,862 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:25,887 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:25,926 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:25,930 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:25,930 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:25,931 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:25,931 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:25,931 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:25,932 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,932 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:25,932 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:25,932 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 23:25:25,933 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:25,934 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:25,936 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 23:25:25,945 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 23:25:26,076 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:26,127 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:26,127 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:26,128 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 23:25:26,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:26,131 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:26,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:26,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:26,132 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:26,133 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:26,134 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:26,143 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:26,144 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 23:25:26,144 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:26,144 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:26,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:26,146 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:26,146 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:26,147 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:26,148 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:26,154 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:26,163 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:26,163 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:26,164 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:26,164 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:26,164 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:26,164 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 23:25:26,165 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:26,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:26,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:26,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:26,239 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 23:25:26,240 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:25:26,240 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-28 23:25:26,289 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2018-11-28 23:25:26,293 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 23:25:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-28 23:25:26,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:25:26,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:26,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:26,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:26,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 23:25:26,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:26,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-11-28 23:25:26,297 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-11-28 23:25:26,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-11-28 23:25:26,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-11-28 23:25:26,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-11-28 23:25:26,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-11-28 23:25:26,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:26,299 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-11-28 23:25:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-11-28 23:25:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-11-28 23:25:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 23:25:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-11-28 23:25:26,303 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-11-28 23:25:26,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:25:26,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:25:26,304 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-11-28 23:25:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:26,416 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-11-28 23:25:26,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:25:26,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-11-28 23:25:26,418 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 23:25:26,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-11-28 23:25:26,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-28 23:25:26,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-28 23:25:26,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-11-28 23:25:26,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:25:26,420 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-11-28 23:25:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-11-28 23:25:26,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-28 23:25:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 23:25:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-11-28 23:25:26,423 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 23:25:26,423 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 23:25:26,423 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:25:26,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-11-28 23:25:26,424 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 23:25:26,424 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:26,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:26,425 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:25:26,425 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:26,425 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-11-28 23:25:26,425 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-11-28 23:25:26,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-11-28 23:25:26,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:26,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:26,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:26,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,446 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-11-28 23:25:26,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:26,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:26,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:26,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-11-28 23:25:26,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:26,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:26,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:26,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,524 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:26,524 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:26,524 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:26,524 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:26,525 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:26,525 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:26,525 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:26,525 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:26,525 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 23:25:26,525 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:26,525 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:26,526 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 23:25:26,541 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 23:25:26,694 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:26,695 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:25:26,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:26,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:26,714 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:26,714 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:25:26,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:26,737 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:25:26,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:26,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:26,784 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:26,786 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:26,786 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:26,786 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:26,787 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:26,787 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:26,787 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:26,787 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:26,788 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:26,788 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 23:25:26,788 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:26,788 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:26,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:25:26,803 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 23:25:26,932 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:26,932 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:26,936 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 23:25:26,937 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:26,937 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:26,937 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:26,937 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:26,937 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:26,939 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:26,940 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:26,946 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:26,947 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 23:25:26,950 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:26,950 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:26,950 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:26,950 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:26,951 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:26,952 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:26,952 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:26,955 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:26,958 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:26,958 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:26,959 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:26,959 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:26,959 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:26,959 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 23:25:26,960 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:26,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:27,081 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 23:25:27,082 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 23:25:27,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 23:25:27,099 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2018-11-28 23:25:27,100 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 23:25:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:25:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 23:25:27,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:25:27,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:27,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 23:25:27,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-11-28 23:25:27,104 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 23:25:27,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-11-28 23:25:27,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-28 23:25:27,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 23:25:27,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-11-28 23:25:27,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:27,106 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-11-28 23:25:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-11-28 23:25:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-11-28 23:25:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 23:25:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-11-28 23:25:27,110 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 23:25:27,110 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 23:25:27,110 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:25:27,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-11-28 23:25:27,111 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:25:27,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:27,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:27,111 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:25:27,112 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:27,112 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2018-11-28 23:25:27,112 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2018-11-28 23:25:27,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-11-28 23:25:27,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:27,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:27,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:27,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,165 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 23:25:27,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:25:27,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:25:27,167 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:27,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,167 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-11-28 23:25:27,167 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:27,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:27,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:27,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:27,212 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:27,212 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:27,212 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:27,212 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:27,213 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:27,213 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:27,213 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:27,213 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:27,213 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 23:25:27,213 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:27,214 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:27,215 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 23:25:27,228 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 23:25:27,388 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:27,423 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:27,424 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:25:27,428 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:27,428 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 [2018-11-28 23:25:27,453 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:27,453 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:27,476 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:27,478 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:27,478 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:27,478 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:27,478 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:27,478 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:27,478 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:27,478 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:27,479 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:27,479 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 23:25:27,479 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:27,479 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:27,480 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 23:25:27,509 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 23:25:27,641 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:27,641 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:27,641 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 23:25:27,643 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:27,643 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:27,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:27,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:27,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:27,644 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:27,644 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:27,647 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:27,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:27,650 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:27,650 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:27,650 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:27,651 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:27,651 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 23:25:27,651 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:27,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:27,704 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 23:25:27,705 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:25:27,705 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 23:25:27,724 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2018-11-28 23:25:27,725 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 23:25:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 23:25:27,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:27,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 23:25:27,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 23:25:27,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-11-28 23:25:27,731 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 23:25:27,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-11-28 23:25:27,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 23:25:27,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-28 23:25:27,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-11-28 23:25:27,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:27,734 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-11-28 23:25:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-11-28 23:25:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-11-28 23:25:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 23:25:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-11-28 23:25:27,739 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-11-28 23:25:27,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:25:27,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:25:27,740 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-11-28 23:25:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:27,860 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-11-28 23:25:27,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:25:27,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-11-28 23:25:27,862 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 23:25:27,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-11-28 23:25:27,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 23:25:27,865 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 23:25:27,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-11-28 23:25:27,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:27,865 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-11-28 23:25:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-11-28 23:25:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-11-28 23:25:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 23:25:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-28 23:25:27,870 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 23:25:27,870 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 23:25:27,870 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:25:27,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-11-28 23:25:27,871 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 23:25:27,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:27,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:27,873 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:25:27,873 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:27,873 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-11-28 23:25:27,873 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-11-28 23:25:27,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,874 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-11-28 23:25:27,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:27,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:27,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:27,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:25:27,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:25:27,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:25:27,961 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:27,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-11-28 23:25:27,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:27,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:27,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:27,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:27,994 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:27,994 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:27,994 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:27,995 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:27,995 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:27,995 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:27,995 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:27,996 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:27,996 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 23:25:27,996 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:27,996 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:27,998 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 23:25:28,035 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 23:25:28,157 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:28,157 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:25:28,168 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:28,168 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:28,187 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:28,187 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:25:28,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:28,217 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 23:25:28,241 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:28,241 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:28,264 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:28,266 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:28,266 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:28,266 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:28,266 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:28,266 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:28,266 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:28,266 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:28,266 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:28,268 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 23:25:28,268 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:28,268 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:28,269 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 23:25:28,281 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 23:25:28,365 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:28,366 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:28,366 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 23:25:28,367 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:28,367 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:28,367 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:28,368 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:28,368 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:28,368 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:28,369 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:28,370 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:28,371 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 23:25:28,371 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:28,372 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:28,372 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:28,372 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:28,372 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:28,373 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:28,373 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:28,375 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:28,377 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:28,377 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:28,378 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:28,378 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:28,378 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:28,378 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 23:25:28,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:28,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:28,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:28,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:28,510 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 23:25:28,511 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 23:25:28,511 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-11-28 23:25:28,525 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2018-11-28 23:25:28,526 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 23:25:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:25:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 23:25:28,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 23:25:28,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:28,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 23:25:28,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:28,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-28 23:25:28,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:28,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-11-28 23:25:28,530 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:25:28,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-11-28 23:25:28,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-28 23:25:28,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-11-28 23:25:28,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-11-28 23:25:28,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:28,532 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-11-28 23:25:28,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-11-28 23:25:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-11-28 23:25:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 23:25:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-11-28 23:25:28,535 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-11-28 23:25:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:25:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:25:28,535 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-11-28 23:25:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:28,624 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-11-28 23:25:28,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:25:28,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-11-28 23:25:28,626 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:25:28,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-11-28 23:25:28,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-28 23:25:28,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-28 23:25:28,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-11-28 23:25:28,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:28,628 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-28 23:25:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-11-28 23:25:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-28 23:25:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 23:25:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-11-28 23:25:28,630 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 23:25:28,630 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 23:25:28,630 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:25:28,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-11-28 23:25:28,631 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:25:28,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:28,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:28,632 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:25:28,632 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:28,632 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2018-11-28 23:25:28,633 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2018-11-28 23:25:28,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:28,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-11-28 23:25:28,633 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:28,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:28,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:28,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:28,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:28,717 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 23:25:28,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:25:28,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:25:28,719 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:28,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-11-28 23:25:28,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:28,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:28,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:28,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:28,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:28,848 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:25:28,866 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:28,867 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:28,867 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:28,867 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:28,867 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:28,867 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:28,867 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:28,868 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:28,868 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 23:25:28,868 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:28,868 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:28,869 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 23:25:28,889 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 23:25:29,059 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-28 23:25:29,060 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:29,060 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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:29,064 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:29,064 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:25:29,088 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:29,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:29,111 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:29,113 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:29,113 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:29,113 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:29,113 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:29,113 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:29,113 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:29,114 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:29,114 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:29,114 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 23:25:29,114 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:29,114 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:29,115 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 23:25:29,126 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 23:25:29,263 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:29,263 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:29,265 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 23:25:29,265 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:29,265 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:29,266 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:29,266 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:29,266 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:29,266 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:29,266 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:29,269 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:29,270 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:29,270 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:29,271 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:29,271 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:29,271 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:29,271 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 23:25:29,271 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:29,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:29,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:29,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:29,623 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 23:25:29,623 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:25:29,623 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 23:25:29,655 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2018-11-28 23:25:29,656 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 23:25:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-11-28 23:25:29,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-11-28 23:25:29,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:29,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-11-28 23:25:29,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:29,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-11-28 23:25:29,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:29,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-11-28 23:25:29,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:25:29,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-11-28 23:25:29,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-11-28 23:25:29,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-28 23:25:29,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-11-28 23:25:29,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:29,663 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 23:25:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-11-28 23:25:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 23:25:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 23:25:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-11-28 23:25:29,668 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 23:25:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:25:29,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:25:29,669 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-11-28 23:25:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:29,776 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-11-28 23:25:29,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:25:29,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-28 23:25:29,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:25:29,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-11-28 23:25:29,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 23:25:29,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-28 23:25:29,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-11-28 23:25:29,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:29,779 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-28 23:25:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-11-28 23:25:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-11-28 23:25:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 23:25:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-28 23:25:29,781 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 23:25:29,781 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 23:25:29,781 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:25:29,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-11-28 23:25:29,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:25:29,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:29,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:29,783 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:25:29,783 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:29,783 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-11-28 23:25:29,783 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-11-28 23:25:29,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-11-28 23:25:29,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:29,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:29,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:29,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:29,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:25:29,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:25:29,996 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:25:30,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:30,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:25:30,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:25:30,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-28 23:25:30,058 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:30,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:30,058 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-11-28 23:25:30,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:30,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:30,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:30,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:30,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:30,096 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:30,097 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:30,097 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:30,097 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:30,097 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:30,097 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:30,097 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:30,097 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:30,098 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 23:25:30,098 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:30,098 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:30,099 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 23:25:30,105 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 23:25:30,165 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:30,165 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:30,170 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:30,170 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:30,179 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:30,179 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:30,201 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:30,201 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:30,224 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:30,224 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:30,246 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:30,248 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:30,248 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:30,248 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:30,248 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:30,248 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:30,248 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:30,248 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:30,248 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:30,248 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 23:25:30,249 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:30,249 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:30,249 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 23:25:30,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:25:30,333 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:30,333 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:30,334 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 23:25:30,337 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:30,338 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:30,338 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:30,338 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:30,338 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:30,339 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:30,339 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:30,340 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:30,341 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 23:25:30,341 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:30,341 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:30,344 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:30,344 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:30,344 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:30,345 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:30,345 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:30,349 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:30,350 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:30,351 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:30,351 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:30,351 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:30,351 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:30,352 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 23:25:30,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:30,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:30,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:30,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:30,474 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 23:25:30,474 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 23:25:30,474 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 23:25:30,498 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2018-11-28 23:25:30,499 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 23:25:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:25:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-11-28 23:25:30,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-28 23:25:30,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:30,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 23:25:30,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:30,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-11-28 23:25:30,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:30,501 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-11-28 23:25:30,501 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:25:30,502 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-11-28 23:25:30,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:25:30,502 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:25:30,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:25:30,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:25:30,503 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:30,503 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:25:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:25:30,503 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-28 23:25:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:30,504 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 23:25:30,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:25:30,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 23:25:30,504 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:25:30,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:25:30,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:25:30,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:25:30,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:25:30,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:25:30,505 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:30,505 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:30,505 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:30,505 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 23:25:30,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:25:30,505 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:25:30,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:25:30,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:25:30 BoogieIcfgContainer [2018-11-28 23:25:30,513 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:25:30,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:25:30,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:25:30,513 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:25:30,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:22" (3/4) ... [2018-11-28 23:25:30,517 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:25:30,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:25:30,518 INFO L168 Benchmark]: Toolchain (without parser) took 9029.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 948.7 MB in the beginning and 988.1 MB in the end (delta: -39.5 MB). Peak memory consumption was 160.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:30,520 INFO L168 Benchmark]: CDTParser took 0.23 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 23:25:30,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.49 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:30,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.79 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:30,521 INFO L168 Benchmark]: Boogie Preprocessor took 115.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:30,522 INFO L168 Benchmark]: RCFGBuilder took 945.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:30,523 INFO L168 Benchmark]: BuchiAutomizer took 7530.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 995.5 MB in the end (delta: 87.7 MB). Peak memory consumption was 165.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:30,524 INFO L168 Benchmark]: Witness Printer took 4.64 ms. Allocated memory is still 1.2 GB. Free memory is still 988.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:30,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 375.49 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.79 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 115.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 945.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7530.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 995.5 MB in the end (delta: 87.7 MB). Peak memory consumption was 165.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.64 ms. Allocated memory is still 1.2 GB. Free memory is still 988.1 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 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 5.4s. Construction of modules took 0.5s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div596 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...