./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/bitvector/soft_float_5a.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 7e1b4e42babcfba0789bfa7cb90840c832d315a4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 03:05:41,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:05:41,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:05:41,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:05:41,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:05:41,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:05:41,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:05:41,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:05:41,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:05:41,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:05:41,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:05:41,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:05:41,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:05:41,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:05:41,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:05:41,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:05:41,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:05:41,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:05:41,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:05:41,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:05:41,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:05:41,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:05:41,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:05:41,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:05:41,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:05:41,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:05:41,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:05:41,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:05:41,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:05:41,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:05:41,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:05:41,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:05:41,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:05:41,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:05:41,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:05:41,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:05:41,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:05:41,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:05:41,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:05:41,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:05:41,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:05:41,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:05:41,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:05:41,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:05:41,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:05:41,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:05:41,751 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:05:41,752 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:05:41,752 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:05:41,752 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:05:41,752 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:05:41,753 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:05:41,754 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:05:41,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:05:41,755 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:05:41,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:05:41,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:05:41,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:05:41,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:05:41,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:05:41,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:05:41,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:05:41,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:05:41,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:05:41,758 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:05:41,758 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:05:41,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:05:41,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:05:41,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:05:41,759 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:05:41,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:05:41,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:05:41,760 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:05:41,762 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:05:41,763 INFO L138 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 -> 7e1b4e42babcfba0789bfa7cb90840c832d315a4 [2019-11-28 03:05:42,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:05:42,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:05:42,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:05:42,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:05:42,084 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:05:42,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-11-28 03:05:42,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53cd735e0/62fc97e77a9f4f27a6af19da0c4d49cd/FLAG10dc91172 [2019-11-28 03:05:42,710 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:05:42,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-11-28 03:05:42,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53cd735e0/62fc97e77a9f4f27a6af19da0c4d49cd/FLAG10dc91172 [2019-11-28 03:05:43,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53cd735e0/62fc97e77a9f4f27a6af19da0c4d49cd [2019-11-28 03:05:43,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:05:43,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:05:43,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:05:43,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:05:43,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:05:43,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7397f0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43, skipping insertion in model container [2019-11-28 03:05:43,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:05:43,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:05:43,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:05:43,501 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:05:43,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:05:43,607 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:05:43,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43 WrapperNode [2019-11-28 03:05:43,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:05:43,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:05:43,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:05:43,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:05:43,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:05:43,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:05:43,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:05:43,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:05:43,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:05:43,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:05:43,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:05:43,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:05:43,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:05:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:05:44,292 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:05:44,293 INFO L297 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 03:05:44,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:44 BoogieIcfgContainer [2019-11-28 03:05:44,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:05:44,295 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:05:44,295 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:05:44,299 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:05:44,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:05:44,300 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:05:43" (1/3) ... [2019-11-28 03:05:44,301 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14cf35f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:05:44, skipping insertion in model container [2019-11-28 03:05:44,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:05:44,301 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (2/3) ... [2019-11-28 03:05:44,302 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14cf35f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:05:44, skipping insertion in model container [2019-11-28 03:05:44,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:05:44,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:44" (3/3) ... [2019-11-28 03:05:44,304 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-11-28 03:05:44,346 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:05:44,346 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:05:44,347 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:05:44,347 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:05:44,347 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:05:44,347 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:05:44,348 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:05:44,348 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:05:44,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-28 03:05:44,386 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 03:05:44,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:44,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:44,393 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:05:44,393 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:44,393 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:05:44,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-28 03:05:44,399 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 03:05:44,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:44,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:44,400 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:05:44,400 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:44,407 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-11-28 03:05:44,407 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2019-11-28 03:05:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:44,414 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-28 03:05:44,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:44,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266891866] [2019-11-28 03:05:44,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:44,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266891866] [2019-11-28 03:05:44,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:05:44,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 03:05:44,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907310586] [2019-11-28 03:05:44,586 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:44,587 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-28 03:05:44,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:44,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546847708] [2019-11-28 03:05:44,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:44,683 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:44,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:44,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:44,686 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:44,686 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:44,686 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,687 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:44,687 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:44,687 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-11-28 03:05:44,688 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:44,688 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:44,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,853 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:44,854 INFO L404 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) [2019-11-28 03:05:44,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:44,871 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,888 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:44,888 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:44,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:44,908 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:44,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:44,942 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:44,945 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:44,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:44,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:44,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:44,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:44,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:44,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:44,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-11-28 03:05:44,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:44,947 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:44,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:45,081 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:45,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:45,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:45,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:45,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:45,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:45,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:45,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:05:45,105 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:45,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:45,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:45,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:45,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:45,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:45,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:45,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:05:45,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:45,141 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:45,141 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,152 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:45,152 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:45,152 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:45,153 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 03:05:45,160 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:45,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:45,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:45,250 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:45,260 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-11-28 03:05:45,393 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2019-11-28 03:05:45,393 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 [2019-11-28 03:05:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-11-28 03:05:45,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 03:05:45,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 03:05:45,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 03:05:45,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-11-28 03:05:45,428 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-28 03:05:45,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-11-28 03:05:45,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-28 03:05:45,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-28 03:05:45,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-28 03:05:45,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:45,440 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-28 03:05:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-28 03:05:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-28 03:05:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 03:05:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-28 03:05:45,488 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-28 03:05:45,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:45,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:05:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:05:45,494 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-28 03:05:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:45,586 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-28 03:05:45,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:05:45,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-28 03:05:45,589 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 03:05:45,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-28 03:05:45,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 03:05:45,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 03:05:45,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-28 03:05:45,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:05:45,591 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 03:05:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-28 03:05:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 03:05:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 03:05:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-28 03:05:45,594 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 03:05:45,594 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 03:05:45,594 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:05:45,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-28 03:05:45,595 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 03:05:45,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:45,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:45,596 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:05:45,596 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:45,596 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2019-11-28 03:05:45,596 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-11-28 03:05:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-28 03:05:45,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973833180] [2019-11-28 03:05:45,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:45,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973833180] [2019-11-28 03:05:45,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:05:45,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 03:05:45,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773923031] [2019-11-28 03:05:45,662 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-28 03:05:45,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096284875] [2019-11-28 03:05:45,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,723 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:45,723 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:45,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:45,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:45,723 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:45,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:45,724 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:45,724 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-11-28 03:05:45,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:45,724 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:45,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,844 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:45,844 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:45,861 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,869 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:45,870 INFO L440 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:45,892 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:45,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:45,926 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:45,929 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:45,929 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:45,929 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:45,930 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:45,930 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:45,930 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,930 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:45,931 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:45,931 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-11-28 03:05:45,931 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:45,931 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:45,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,041 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,041 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 03:05:46,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:46,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:46,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:46,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:46,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:46,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:46,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:46,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,066 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. 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) [2019-11-28 03:05:46,079 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:46,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:46,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:46,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:46,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:46,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:46,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:46,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:46,103 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:46,103 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. 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) [2019-11-28 03:05:46,118 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:46,119 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:46,119 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:46,119 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 03:05:46,124 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:46,175 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:46,175 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-28 03:05:46,202 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2019-11-28 03:05:46,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-28 03:05:46,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 03:05:46,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:46,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 03:05:46,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-28 03:05:46,211 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-28 03:05:46,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-28 03:05:46,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-28 03:05:46,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-28 03:05:46,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-28 03:05:46,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:46,215 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-28 03:05:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-28 03:05:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-28 03:05:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 03:05:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-28 03:05:46,221 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-28 03:05:46,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:05:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:05:46,222 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-28 03:05:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:46,302 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-28 03:05:46,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:05:46,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-28 03:05:46,304 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 03:05:46,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-28 03:05:46,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-28 03:05:46,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-28 03:05:46,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-28 03:05:46,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:05:46,305 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-28 03:05:46,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-28 03:05:46,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-28 03:05:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 03:05:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-28 03:05:46,312 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-28 03:05:46,312 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-28 03:05:46,312 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 03:05:46,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-28 03:05:46,313 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 03:05:46,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:46,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:46,315 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:05:46,315 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:46,315 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-28 03:05:46,316 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-28 03:05:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,316 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-28 03:05:46,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786309108] [2019-11-28 03:05:46,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,363 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-28 03:05:46,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119094530] [2019-11-28 03:05:46,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-28 03:05:46,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053778751] [2019-11-28 03:05:46,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,442 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,468 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:46,468 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:46,468 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:46,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:46,468 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:46,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:46,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:46,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-11-28 03:05:46,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:46,470 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:46,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,560 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,560 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:46,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:46,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:46,580 INFO L440 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:46,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:46,599 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:46,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:46,626 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:46,628 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:46,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:46,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:46,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:46,629 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:46,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:46,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:46,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-11-28 03:05:46,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:46,630 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:46,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,717 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,717 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:46,727 INFO L120 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 Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:46,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:46,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:46,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:46,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:46,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:46,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:05:46,736 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,749 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:46,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:46,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:46,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:46,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:46,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:46,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:46,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:05:46,764 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:46,767 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:46,768 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,773 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:46,773 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:46,774 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:46,774 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-28 03:05:46,776 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:46,849 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:05:46,849 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 03:05:46,862 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2019-11-28 03:05:46,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 03:05:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 03:05:46,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 03:05:46,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:46,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 03:05:46,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-28 03:05:46,871 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 03:05:46,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-28 03:05:46,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-28 03:05:46,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-28 03:05:46,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-28 03:05:46,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:46,873 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-28 03:05:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-28 03:05:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-28 03:05:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 03:05:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-28 03:05:46,878 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-28 03:05:46,878 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-28 03:05:46,878 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 03:05:46,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-28 03:05:46,878 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 03:05:46,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:46,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:46,881 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:05:46,881 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:46,882 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2019-11-28 03:05:46,882 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2019-11-28 03:05:46,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-28 03:05:46,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254952198] [2019-11-28 03:05:46,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:46,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254952198] [2019-11-28 03:05:46,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:05:46,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 03:05:46,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851765852] [2019-11-28 03:05:46,934 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:46,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,934 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-28 03:05:46,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654157592] [2019-11-28 03:05:46,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,959 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,985 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:46,986 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:46,986 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:46,986 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:46,986 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:46,986 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,986 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:46,986 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:46,987 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-11-28 03:05:46,987 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:46,987 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:46,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,127 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:47,128 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:47,138 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:47,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:47,169 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:47,172 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:47,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:47,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:47,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:47,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:47,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:47,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:47,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-11-28 03:05:47,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:47,173 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:47,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,264 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:47,264 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:47,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:47,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:47,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:47,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:47,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:47,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:47,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,286 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:47,294 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:47,294 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:47,305 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:47,305 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:47,305 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 03:05:47,310 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:47,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:47,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:47,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:47,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:47,356 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:47,356 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-28 03:05:47,376 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2019-11-28 03:05:47,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 03:05:47,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:47,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:47,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 03:05:47,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:47,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 03:05:47,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:47,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-28 03:05:47,380 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 03:05:47,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-28 03:05:47,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 03:05:47,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-28 03:05:47,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-28 03:05:47,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:47,386 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-28 03:05:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-28 03:05:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-28 03:05:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 03:05:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-28 03:05:47,392 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-28 03:05:47,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:47,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:05:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:05:47,393 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-28 03:05:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:47,440 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-28 03:05:47,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:05:47,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-28 03:05:47,442 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 03:05:47,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-28 03:05:47,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 03:05:47,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 03:05:47,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-28 03:05:47,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:47,443 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-28 03:05:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-28 03:05:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-28 03:05:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 03:05:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-28 03:05:47,446 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-28 03:05:47,447 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-28 03:05:47,447 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 03:05:47,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-28 03:05:47,447 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 03:05:47,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:47,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:47,448 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:05:47,448 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:47,449 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-28 03:05:47,449 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-28 03:05:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:47,449 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-28 03:05:47,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:47,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518589608] [2019-11-28 03:05:47,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:47,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518589608] [2019-11-28 03:05:47,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:05:47,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 03:05:47,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311225248] [2019-11-28 03:05:47,484 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-28 03:05:47,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:47,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699075923] [2019-11-28 03:05:47,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:47,491 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:47,522 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:47,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:47,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:47,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:47,522 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:47,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:47,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:47,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-11-28 03:05:47,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:47,523 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:47,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,605 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:47,605 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:47,617 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:47,624 INFO L440 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:47,633 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:47,644 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,654 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:47,656 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:47,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:47,657 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:47,657 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:47,657 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:47,657 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:47,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:47,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-11-28 03:05:47,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:47,657 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:47,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:47,728 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:47,729 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:47,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:47,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:47,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:47,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:47,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:47,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:47,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:47,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:47,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:47,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:47,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:47,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:47,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:47,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,767 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:47,770 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:47,771 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:47,775 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:47,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:47,776 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:47,776 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-28 03:05:47,778 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:47,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:47,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:47,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:47,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:47,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:05:47,853 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-28 03:05:47,867 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2019-11-28 03:05:47,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 03:05:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 03:05:47,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 03:05:47,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:47,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-28 03:05:47,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:47,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-28 03:05:47,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:47,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-28 03:05:47,872 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 03:05:47,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-28 03:05:47,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-28 03:05:47,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-28 03:05:47,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-28 03:05:47,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:47,873 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-28 03:05:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-28 03:05:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-28 03:05:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 03:05:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-28 03:05:47,882 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-28 03:05:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:47,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 03:05:47,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 03:05:47,883 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-28 03:05:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:47,947 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-28 03:05:47,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 03:05:47,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-28 03:05:47,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 03:05:47,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-28 03:05:47,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-28 03:05:47,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-28 03:05:47,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-28 03:05:47,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:47,949 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-28 03:05:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-28 03:05:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-28 03:05:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 03:05:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-28 03:05:47,954 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-28 03:05:47,954 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-28 03:05:47,954 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 03:05:47,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-28 03:05:47,955 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 03:05:47,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:47,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:47,955 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:05:47,956 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:47,956 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2019-11-28 03:05:47,956 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2019-11-28 03:05:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-28 03:05:47,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:47,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881940959] [2019-11-28 03:05:47,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:48,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881940959] [2019-11-28 03:05:48,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:05:48,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 03:05:48,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439888722] [2019-11-28 03:05:48,022 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:48,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:48,023 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-28 03:05:48,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:48,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149900977] [2019-11-28 03:05:48,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:48,032 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:48,054 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:48,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:48,055 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:48,055 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:48,055 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:48,055 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,055 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:48,055 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:48,055 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-11-28 03:05:48,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:48,056 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:48,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,129 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:48,129 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:48,137 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:48,151 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,159 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:48,161 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:48,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:48,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:48,161 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:48,161 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:48,161 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,161 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:48,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:48,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-11-28 03:05:48,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:48,162 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:48,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,240 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:48,240 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:48,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:48,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:48,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:48,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:48,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:48,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:48,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,257 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:48,259 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:48,260 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:48,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:48,265 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:48,265 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,272 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:48,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:48,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:48,323 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:48,323 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-28 03:05:48,330 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2019-11-28 03:05:48,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-28 03:05:48,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-28 03:05:48,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:48,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-28 03:05:48,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:48,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-28 03:05:48,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:48,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-28 03:05:48,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:05:48,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-28 03:05:48,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-28 03:05:48,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-28 03:05:48,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-28 03:05:48,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:48,337 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 03:05:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-28 03:05:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-28 03:05:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 03:05:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-28 03:05:48,339 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 03:05:48,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 03:05:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 03:05:48,342 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-28 03:05:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:48,415 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-28 03:05:48,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 03:05:48,416 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-28 03:05:48,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:05:48,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-28 03:05:48,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-28 03:05:48,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-28 03:05:48,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-28 03:05:48,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:48,418 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-28 03:05:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-28 03:05:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-28 03:05:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 03:05:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-28 03:05:48,423 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-28 03:05:48,424 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-28 03:05:48,424 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 03:05:48,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-28 03:05:48,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:05:48,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:48,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:48,426 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:05:48,426 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:48,427 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-28 03:05:48,427 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-28 03:05:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-28 03:05:48,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:48,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718241209] [2019-11-28 03:05:48,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:48,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718241209] [2019-11-28 03:05:48,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960238855] [2019-11-28 03:05:48,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 03:05:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:48,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:48,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 03:05:48,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-28 03:05:48,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209643487] [2019-11-28 03:05:48,577 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-28 03:05:48,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:48,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445912948] [2019-11-28 03:05:48,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:48,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:48,637 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:48,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:48,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:48,638 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:48,638 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:48,638 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:48,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:48,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-11-28 03:05:48,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:48,638 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:48,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,708 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:48,709 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:48,724 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,731 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:48,731 INFO L440 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:48,739 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:48,754 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,763 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:48,766 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:48,766 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:48,766 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:48,766 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:48,766 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:48,766 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,766 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:48,766 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:48,767 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-11-28 03:05:48,767 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:48,767 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:48,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:48,831 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:48,831 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,843 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:48,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:48,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:48,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:48,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:48,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:48,849 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:48,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,852 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:48,860 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:48,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:48,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:48,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:48,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:48,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:48,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:48,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,868 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:48,871 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:48,871 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:48,875 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:48,876 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:48,876 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:48,876 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-28 03:05:48,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:48,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:48,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:48,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:48,931 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:05:48,932 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 03:05:48,937 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2019-11-28 03:05:48,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 03:05:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-28 03:05:48,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-28 03:05:48,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:48,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-28 03:05:48,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:48,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-28 03:05:48,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:48,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-28 03:05:48,940 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:05:48,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-28 03:05:48,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 03:05:48,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 03:05:48,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 03:05:48,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:05:48,941 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:48,941 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:48,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:48,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 03:05:48,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 03:05:48,941 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-28 03:05:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:48,942 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 03:05:48,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 03:05:48,944 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 03:05:48,944 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:05:48,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 03:05:48,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 03:05:48,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 03:05:48,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 03:05:48,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:05:48,945 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:48,945 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:48,945 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:48,945 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 03:05:48,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 03:05:48,946 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:05:48,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 03:05:48,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:05:48 BoogieIcfgContainer [2019-11-28 03:05:48,954 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:05:48,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:05:48,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:05:48,956 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:05:48,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:44" (3/4) ... [2019-11-28 03:05:48,961 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 03:05:48,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:05:48,965 INFO L168 Benchmark]: Toolchain (without parser) took 5928.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.3 MB). Free memory was 952.3 MB in the beginning and 924.1 MB in the end (delta: 28.2 MB). Peak memory consumption was 251.5 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:48,967 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:05:48,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:48,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:05:48,981 INFO L168 Benchmark]: Boogie Preprocessor took 35.54 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:48,981 INFO L168 Benchmark]: RCFGBuilder took 598.26 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:48,982 INFO L168 Benchmark]: BuchiAutomizer took 4659.52 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 930.8 MB in the end (delta: 172.5 MB). Peak memory consumption was 244.3 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:48,984 INFO L168 Benchmark]: Witness Printer took 5.49 ms. Allocated memory is still 1.3 GB. Free memory was 930.8 MB in the beginning and 924.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:48,990 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 574.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.54 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 598.26 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4659.52 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 930.8 MB in the end (delta: 172.5 MB). Peak memory consumption was 244.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.49 ms. Allocated memory is still 1.3 GB. Free memory was 930.8 MB in the beginning and 924.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...