./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/bitvector/soft_float_1_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_1_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 f756365182c9801d4a2ac186a40692687a86b469 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:25:19,695 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:25:19,697 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:25:19,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:25:19,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:25:19,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:25:19,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:25:19,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:25:19,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:25:19,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:25:19,721 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:25:19,721 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:25:19,722 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:25:19,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:25:19,726 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:25:19,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:25:19,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:25:19,730 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:25:19,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:25:19,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:25:19,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:25:19,735 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:25:19,738 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:25:19,738 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:25:19,738 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:25:19,739 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:25:19,740 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:25:19,741 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:25:19,742 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:25:19,743 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:25:19,743 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:25:19,744 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:25:19,744 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:25:19,744 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:25:19,745 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:25:19,746 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:25:19,746 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 23:25:19,763 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:25:19,763 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:25:19,765 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:25:19,765 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:25:19,765 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:25:19,765 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:25:19,765 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:25:19,765 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:25:19,766 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:25:19,766 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:25:19,766 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:25:19,766 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:25:19,766 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:25:19,767 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:25:19,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:25:19,767 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:25:19,767 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:25:19,767 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:25:19,767 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:25:19,768 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:25:19,768 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:25:19,768 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:25:19,768 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:25:19,768 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:25:19,768 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:25:19,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:25:19,769 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:25:19,769 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:25:19,769 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:25:19,769 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:25:19,770 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:25:19,770 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:25:19,771 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 -> f756365182c9801d4a2ac186a40692687a86b469 [2018-11-28 23:25:19,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:25:19,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:25:19,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:25:19,832 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:25:19,832 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:25:19,833 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector/soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 23:25:19,894 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbba8944b/6cdef43951124c2db4ad3bef2535cf8d/FLAG0d17560aa [2018-11-28 23:25:20,414 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:25:20,414 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector/soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 23:25:20,423 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbba8944b/6cdef43951124c2db4ad3bef2535cf8d/FLAG0d17560aa [2018-11-28 23:25:20,722 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbba8944b/6cdef43951124c2db4ad3bef2535cf8d [2018-11-28 23:25:20,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:25:20,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:25:20,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:25:20,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:25:20,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:25:20,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:20" (1/1) ... [2018-11-28 23:25:20,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a68dabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:20, skipping insertion in model container [2018-11-28 23:25:20,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:20" (1/1) ... [2018-11-28 23:25:20,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:25:20,800 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:25:21,037 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:25:21,042 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:25:21,116 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:25:21,133 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:25:21,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:21 WrapperNode [2018-11-28 23:25:21,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:25:21,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:25:21,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:25:21,136 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:25:21,147 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 23:25:21,157 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 23:25:21,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:25:21,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:25:21,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:25:21,195 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:25:21,277 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 23:25:21,277 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 23:25:21,280 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 23:25:21,281 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 23:25:21,288 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 23:25:21,297 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 23:25:21,299 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 23:25:21,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:25:21,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:25:21,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:25:21,304 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:25:21,305 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 23:25:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:25:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:25:22,404 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:25:22,404 INFO L280 CfgBuilder]: Removed 28 assue(true) statements. [2018-11-28 23:25:22,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:22 BoogieIcfgContainer [2018-11-28 23:25:22,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:25:22,406 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:25:22,406 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:25:22,409 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:25:22,410 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:25:22,410 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:25:20" (1/3) ... [2018-11-28 23:25:22,411 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@636a3d72 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 23:25:22,411 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:25:22,411 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 23:25:22,412 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@636a3d72 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 23:25:22,412 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:25:22,412 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 23:25:22,414 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 23:25:22,473 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:25:22,474 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:25:22,475 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:25:22,475 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:25:22,475 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:25:22,475 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:25:22,475 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:25:22,476 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:25:22,476 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:25:22,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states. [2018-11-28 23:25:22,523 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 23:25:22,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:22,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:22,530 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:25:22,530 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:22,530 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:25:22,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states. [2018-11-28 23:25:22,538 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 23:25:22,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:22,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:22,539 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:25:22,539 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:22,548 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 33#L19true assume !(0 == base2flt_~m % 4294967296); 21#L25true assume !(base2flt_~m % 4294967296 < 16777216); 16#L47-2true [2018-11-28 23:25:22,548 INFO L796 eck$LassoCheckResult]: Loop: 16#L47-2true assume !false; 27#L48true assume base2flt_~m % 4294967296 >= 33554432; 55#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 16#L47-2true [2018-11-28 23:25:22,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-11-28 23:25:22,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:22,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:22,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:22,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:22,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:22,778 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 23:25:22,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:25:22,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-28 23:25:22,787 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:25:22,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:22,787 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-11-28 23:25:22,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:22,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:22,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:22,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:22,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:22,873 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:22,874 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:22,874 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:22,874 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:22,874 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:22,874 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:22,875 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:22,875 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:22,875 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 23:25:22,875 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:22,875 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:22,899 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 23:25:22,915 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 23:25:23,082 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:23,222 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:23,223 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 23:25:23,232 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:23,232 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:25:23,262 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:23,262 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:23,286 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:23,288 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:23,288 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:23,288 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:23,288 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:23,288 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:23,289 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:23,289 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:23,289 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:23,289 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 23:25:23,289 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:23,290 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:23,291 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 23:25:23,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:25:23,456 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:23,489 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:23,494 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:23,496 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 23:25:23,497 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:23,497 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:23,498 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:23,498 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:23,498 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:23,501 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:23,501 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:23,507 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:23,513 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:23,514 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:23,516 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:23,516 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:23,517 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:23,518 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 23:25:23,519 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:23,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:23,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:23,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:23,698 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 23:25:23,721 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 23:25:23,724 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states. Second operand 3 states. [2018-11-28 23:25:23,933 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states.. Second operand 3 states. Result 254 states and 411 transitions. Complement of second has 6 states. [2018-11-28 23:25:23,934 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 23:25:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2018-11-28 23:25:23,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 269 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 23:25:23,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:23,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 269 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:25:23,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:23,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 269 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:25:23,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:23,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 254 states and 411 transitions. [2018-11-28 23:25:23,959 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-11-28 23:25:23,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 254 states to 56 states and 81 transitions. [2018-11-28 23:25:23,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2018-11-28 23:25:23,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 23:25:23,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2018-11-28 23:25:23,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:23,978 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2018-11-28 23:25:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2018-11-28 23:25:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2018-11-28 23:25:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 23:25:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2018-11-28 23:25:24,010 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 69 transitions. [2018-11-28 23:25:24,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:25:24,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:25:24,014 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 3 states. [2018-11-28 23:25:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:25:24,167 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-11-28 23:25:24,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:25:24,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-28 23:25:24,170 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:25:24,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 30 transitions. [2018-11-28 23:25:24,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-28 23:25:24,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-28 23:25:24,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-11-28 23:25:24,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:25:24,172 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-28 23:25:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-11-28 23:25:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 23:25:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:25:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-11-28 23:25:24,174 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-28 23:25:24,174 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-28 23:25:24,175 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:25:24,175 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 30 transitions. [2018-11-28 23:25:24,175 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:25:24,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:24,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:24,176 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:25:24,176 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:24,177 INFO L794 eck$LassoCheckResult]: Stem: 469#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 468#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 456#L69 base2flt_#res := base2flt_~__retres4~0; 457#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 464#L19-1 assume !(0 == base2flt_~m % 4294967296); 467#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 461#L47-5 [2018-11-28 23:25:24,177 INFO L796 eck$LassoCheckResult]: Loop: 461#L47-5 assume !false; 449#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 451#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 461#L47-5 [2018-11-28 23:25:24,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:24,177 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-11-28 23:25:24,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:24,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:24,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:24,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:24,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:24,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:24,202 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-11-28 23:25:24,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:24,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:24,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:24,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:24,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:24,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:24,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973968, now seen corresponding path program 1 times [2018-11-28 23:25:24,215 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:24,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:24,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:24,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:24,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:24,311 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:24,311 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:24,311 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:24,311 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:24,311 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:24,312 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:24,312 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:24,312 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:24,312 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 23:25:24,312 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:24,313 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:24,314 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 23:25:24,326 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 23:25:24,530 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:24,531 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:24,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:24,534 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:24,616 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:24,616 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 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 23:25:24,636 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:24,637 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:25:24,748 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:24,749 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:24,811 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:24,818 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:24,818 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:24,818 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:24,819 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:24,819 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:24,819 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:24,819 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:24,819 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:24,819 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 23:25:24,819 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:24,820 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:24,823 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 23:25:24,839 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 23:25:24,986 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:24,986 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:24,987 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 23:25:24,989 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:24,989 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:24,989 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:24,989 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:24,989 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:24,992 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:24,993 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:25,002 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:25,003 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 23:25:25,003 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:25,004 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:25,004 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:25,004 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:25,004 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:25,007 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:25,007 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:25,012 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:25,015 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:25,016 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:25,016 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:25,016 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:25,016 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:25,017 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 23:25:25,018 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:25,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:25,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:25,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:25,092 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 23:25:25,092 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 23:25:25,093 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-11-28 23:25:25,112 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 40 states and 50 transitions. Complement of second has 5 states. [2018-11-28 23:25:25,115 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 23:25:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2018-11-28 23:25:25,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:25:25,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:25,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:25,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:25,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 23:25:25,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:25,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2018-11-28 23:25:25,120 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 23:25:25,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 37 states and 46 transitions. [2018-11-28 23:25:25,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-28 23:25:25,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 23:25:25,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2018-11-28 23:25:25,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:25,122 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-28 23:25:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2018-11-28 23:25:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-11-28 23:25:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 23:25:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-11-28 23:25:25,127 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 23:25:25,127 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 23:25:25,127 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:25:25,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-11-28 23:25:25,128 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 23:25:25,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:25,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:25,131 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:25:25,131 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:25,131 INFO L794 eck$LassoCheckResult]: Stem: 583#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 580#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 568#L69 base2flt_#res := base2flt_~__retres4~0; 569#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 576#L19-1 assume !(0 == base2flt_~m % 4294967296); 579#L25-1 assume base2flt_~m % 4294967296 < 16777216; 584#L37-3 [2018-11-28 23:25:25,131 INFO L796 eck$LassoCheckResult]: Loop: 584#L37-3 assume !false; 574#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 575#L37-2 assume base2flt_~m % 4294967296 < 16777216; 584#L37-3 [2018-11-28 23:25:25,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,134 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-11-28 23:25:25,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,155 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-11-28 23:25:25,155 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-11-28 23:25:25,165 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,253 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:25,253 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:25,253 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:25,253 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:25,253 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:25,254 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,254 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:25,254 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:25,254 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 23:25:25,254 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:25,254 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:25,255 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 23:25:25,270 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 23:25:25,402 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:25,402 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:25:25,407 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:25,407 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:25,420 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:25:25,420 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 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 23:25:25,442 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:25,442 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,467 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:25,467 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:25,493 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:25,496 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:25,496 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:25,496 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:25,496 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:25,497 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:25,497 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,497 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:25,497 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:25,497 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 23:25:25,497 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:25,497 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:25,498 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 23:25:25,523 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 23:25:25,635 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:25,636 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:25,636 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 23:25:25,637 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:25,637 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:25,637 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:25,638 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:25,638 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:25,641 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:25,641 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:25,645 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:25:25,646 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 23:25:25,646 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:25,646 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:25,647 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:25,647 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:25,647 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:25,650 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:25,650 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:25,654 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:25,657 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:25,658 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:25,658 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:25,658 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:25,659 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:25,659 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 23:25:25,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:25,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:25,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:25,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:25,766 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 23:25:25,766 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 23:25:25,766 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 23:25:25,782 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 44 states and 55 transitions. Complement of second has 5 states. [2018-11-28 23:25:25,784 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 23:25:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:25:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2018-11-28 23:25:25,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:25:25,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:25,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:25,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:25,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 23:25:25,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:25,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-11-28 23:25:25,789 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 23:25:25,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 51 transitions. [2018-11-28 23:25:25,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 23:25:25,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-28 23:25:25,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-11-28 23:25:25,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:25,791 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-28 23:25:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-11-28 23:25:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2018-11-28 23:25:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 23:25:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2018-11-28 23:25:25,795 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-11-28 23:25:25,795 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-11-28 23:25:25,796 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:25:25,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2018-11-28 23:25:25,796 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:25:25,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:25,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:25,799 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:25:25,799 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:25,799 INFO L794 eck$LassoCheckResult]: Stem: 702#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 699#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 688#L69 base2flt_#res := base2flt_~__retres4~0; 689#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 695#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 690#L69-1 base2flt_#res := base2flt_~__retres4~0; 686#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;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; 687#L19-2 assume !(0 == base2flt_~m % 4294967296); 696#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 683#L47-8 [2018-11-28 23:25:25,799 INFO L796 eck$LassoCheckResult]: Loop: 683#L47-8 assume !false; 697#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 682#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 683#L47-8 [2018-11-28 23:25:25,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-11-28 23:25:25,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-11-28 23:25:25,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1766695638, now seen corresponding path program 1 times [2018-11-28 23:25:25,843 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:25,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:25,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:25,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:25,950 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:25,950 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:25,950 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:25,950 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:25,950 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:25,951 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:25,951 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:25,951 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:25,951 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 23:25:25,951 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:25,951 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:25,952 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 23:25:26,034 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 23:25:26,457 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-28 23:25:26,556 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:26,556 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:26,563 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:26,563 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:25:26,587 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:26,587 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:26,609 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:26,611 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:26,611 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:26,611 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:26,611 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:26,612 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:26,612 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:26,612 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:26,612 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:26,612 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 23:25:26,612 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:26,612 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:26,613 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 23:25:26,620 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 23:25:26,743 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:26,744 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:26,745 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 23:25:26,746 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:26,746 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:26,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:26,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:26,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:26,749 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:26,750 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:26,753 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:26,755 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:26,755 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:26,756 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:26,756 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:26,756 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:26,756 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 23:25:26,757 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:26,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:26,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:26,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:26,844 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 23:25:26,845 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 23:25:26,845 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-11-28 23:25:26,855 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 4 states. [2018-11-28 23:25:26,857 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 23:25:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:25:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2018-11-28 23:25:26,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:26,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:26,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 23:25:26,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:26,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 23:25:26,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:26,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2018-11-28 23:25:26,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:25:26,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 34 transitions. [2018-11-28 23:25:26,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-11-28 23:25:26,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-11-28 23:25:26,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2018-11-28 23:25:26,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:25:26,862 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 23:25:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2018-11-28 23:25:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-28 23:25:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 23:25:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-11-28 23:25:26,864 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 23:25:26,864 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 23:25:26,864 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:25:26,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-11-28 23:25:26,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:25:26,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:25:26,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:25:26,866 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:25:26,866 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:25:26,866 INFO L794 eck$LassoCheckResult]: Stem: 815#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 812#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 800#L69 base2flt_#res := base2flt_~__retres4~0; 801#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 809#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 804#L69-1 base2flt_#res := base2flt_~__retres4~0; 802#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;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; 803#L19-2 assume !(0 == base2flt_~m % 4294967296); 810#L25-2 assume base2flt_~m % 4294967296 < 16777216; 814#L37-5 [2018-11-28 23:25:26,866 INFO L796 eck$LassoCheckResult]: Loop: 814#L37-5 assume !false; 798#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 799#L37-4 assume base2flt_~m % 4294967296 < 16777216; 814#L37-5 [2018-11-28 23:25:26,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951170, now seen corresponding path program 1 times [2018-11-28 23:25:26,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:26,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,885 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-11-28 23:25:26,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:26,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:26,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:26,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:26,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1765895313, now seen corresponding path program 1 times [2018-11-28 23:25:26,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:25:26,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:25:26,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:25:26,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:25:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:25:26,948 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:26,948 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:26,948 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:26,948 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:26,949 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:25:26,949 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:26,949 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:26,949 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:26,949 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 23:25:26,950 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:26,950 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:26,951 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 23:25:26,966 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 23:25:27,099 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:27,100 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:25:27,103 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:25:27,103 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:27,147 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:25:27,147 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:25:27,186 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:25:27,188 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:25:27,188 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:25:27,188 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:25:27,188 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:25:27,188 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:25:27,188 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:25:27,188 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:25:27,188 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:25:27,188 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 23:25:27,189 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:25:27,189 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:25:27,191 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 23:25:27,221 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 23:25:27,352 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:25:27,352 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:25:27,353 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 23:25:27,353 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:25:27,354 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:25:27,354 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:25:27,354 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:25:27,354 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:25:27,355 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:25:27,355 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:25:27,357 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:25:27,359 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:25:27,359 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:25:27,360 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:25:27,360 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:25:27,360 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:25:27,360 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 23:25:27,361 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:25:27,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:25:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:25:27,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:25:27,437 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 23:25:27,438 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 23:25:27,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-28 23:25:27,445 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 30 states and 38 transitions. Complement of second has 4 states. [2018-11-28 23:25:27,447 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 23:25:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:25:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2018-11-28 23:25:27,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:25:27,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 23:25:27,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 23:25:27,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:25:27,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2018-11-28 23:25:27,450 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:25:27,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2018-11-28 23:25:27,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:25:27,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:25:27,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:25:27,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:25:27,450 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:27,450 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:27,450 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:25:27,451 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:25:27,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:25:27,451 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:25:27,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:25:27,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:25:27 BoogieIcfgContainer [2018-11-28 23:25:27,458 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:25:27,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:25:27,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:25:27,459 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:25:27,460 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 23:25:27,463 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:25:27,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:25:27,464 INFO L168 Benchmark]: Toolchain (without parser) took 6736.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -221.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:27,465 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:27,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.59 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 929.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:27,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.35 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:27,467 INFO L168 Benchmark]: Boogie Preprocessor took 108.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -198.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:27,468 INFO L168 Benchmark]: RCFGBuilder took 1101.42 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: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:25:27,469 INFO L168 Benchmark]: BuchiAutomizer took 5052.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:27,470 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:25:27,474 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 403.59 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 929.9 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 59.35 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 108.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -198.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1101.42 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: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5052.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 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. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 272 SDtfs, 240 SDslu, 26 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div605 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 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...