./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 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_2a.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 9a8cb7a54337f31cc721bc63892cae8fcf685402 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:22:04,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:22:04,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:22:04,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:22:04,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:22:04,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:22:04,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:22:04,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:22:04,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:22:04,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:22:04,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:22:04,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:22:04,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:22:04,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:22:04,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:22:04,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:22:04,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:22:04,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:22:04,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:22:04,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:22:04,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:22:04,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:22:04,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:22:04,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:22:04,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:22:04,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:22:04,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:22:04,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:22:04,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:22:04,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:22:04,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:22:04,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:22:04,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:22:04,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:22:04,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:22:04,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:22:04,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:22:04,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:22:04,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:22:04,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:22:04,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:22:04,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-19 22:22:04,709 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:22:04,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:22:04,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:22:04,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:22:04,715 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:22:04,715 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 22:22:04,716 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 22:22:04,716 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 22:22:04,716 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 22:22:04,716 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 22:22:04,718 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 22:22:04,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:22:04,718 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:22:04,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:22:04,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:22:04,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:22:04,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:22:04,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 22:22:04,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 22:22:04,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 22:22:04,721 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:22:04,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:22:04,721 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 22:22:04,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:22:04,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 22:22:04,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:22:04,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:22:04,723 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 22:22:04,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:22:04,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:22:04,724 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 22:22:04,726 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 22:22:04,726 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 -> 9a8cb7a54337f31cc721bc63892cae8fcf685402 [2019-11-19 22:22:05,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:22:05,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:22:05,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:22:05,042 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:22:05,042 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:22:05,043 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2019-11-19 22:22:05,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2570bf568/c9ef2521208e44ee9e9cd0020bcef7fa/FLAGf388da30f [2019-11-19 22:22:05,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:22:05,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2019-11-19 22:22:05,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2570bf568/c9ef2521208e44ee9e9cd0020bcef7fa/FLAGf388da30f [2019-11-19 22:22:05,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2570bf568/c9ef2521208e44ee9e9cd0020bcef7fa [2019-11-19 22:22:05,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:22:05,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:22:05,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:22:05,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:22:05,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:22:05,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:22:05" (1/1) ... [2019-11-19 22:22:05,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a0f889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:05, skipping insertion in model container [2019-11-19 22:22:05,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:22:05" (1/1) ... [2019-11-19 22:22:05,982 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:22:06,031 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:22:06,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:22:06,280 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:22:06,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:22:06,391 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:22:06,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06 WrapperNode [2019-11-19 22:22:06,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:22:06,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:22:06,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:22:06,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:22:06,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:22:06,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:22:06,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:22:06,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:22:06,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (1/1) ... [2019-11-19 22:22:06,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:22:06,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:22:06,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:22:06,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:22:06,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (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 [2019-11-19 22:22:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:22:06,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:22:07,048 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:22:07,048 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-19 22:22:07,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:22:07 BoogieIcfgContainer [2019-11-19 22:22:07,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:22:07,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 22:22:07,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 22:22:07,055 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 22:22:07,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:22:07,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 10:22:05" (1/3) ... [2019-11-19 22:22:07,057 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b7043c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:22:07, skipping insertion in model container [2019-11-19 22:22:07,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:22:07,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:22:06" (2/3) ... [2019-11-19 22:22:07,058 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b7043c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:22:07, skipping insertion in model container [2019-11-19 22:22:07,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:22:07,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:22:07" (3/3) ... [2019-11-19 22:22:07,060 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2019-11-19 22:22:07,103 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 22:22:07,103 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 22:22:07,104 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 22:22:07,104 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:22:07,105 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:22:07,105 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 22:22:07,105 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:22:07,106 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 22:22:07,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-19 22:22:07,150 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 22:22:07,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:07,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:07,156 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:22:07,156 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:07,156 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 22:22:07,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-19 22:22:07,162 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 22:22:07,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:07,163 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:07,163 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:22:07,163 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:07,170 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-11-19 22:22:07,170 INFO L796 eck$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 [2019-11-19 22:22:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-19 22:22:07,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:07,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611265480] [2019-11-19 22:22:07,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:07,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611265480] [2019-11-19 22:22:07,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:22:07,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-19 22:22:07,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758339944] [2019-11-19 22:22:07,374 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:22:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:07,375 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-19 22:22:07,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:07,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484669625] [2019-11-19 22:22:07,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:07,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:07,506 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:07,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:07,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:07,510 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:07,510 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:07,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:07,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:07,511 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:07,511 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2019-11-19 22:22:07,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:07,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:07,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:07,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:07,688 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:07,688 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) [2019-11-19 22:22:07,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:07,700 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 [2019-11-19 22:22:07,716 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:22:07,716 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:07,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:07,731 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:07,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:07,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:22:07,766 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:07,769 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:07,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:07,770 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:07,770 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:07,770 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:07,770 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:07,770 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:07,770 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:07,770 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2019-11-19 22:22:07,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:07,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:07,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:07,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:07,894 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:07,901 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) [2019-11-19 22:22:07,917 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 [2019-11-19 22:22:07,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:07,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:07,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:07,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:07,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:07,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:07,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:22:07,935 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:22:07,952 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 [2019-11-19 22:22:07,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:07,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:07,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:07,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:07,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:07,958 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:07,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:07,963 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:07,971 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:07,971 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) [2019-11-19 22:22:07,979 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:07,980 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:07,980 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:07,981 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:22:07,989 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:08,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:08,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:08,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:08,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:08,086 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 [2019-11-19 22:22:08,096 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-11-19 22:22:08,207 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. [2019-11-19 22:22:08,207 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 [2019-11-19 22:22:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:22:08,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-11-19 22:22:08,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-19 22:22:08,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:08,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:22:08,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:08,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-19 22:22:08,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:08,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-11-19 22:22:08,227 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-19 22:22:08,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-11-19 22:22:08,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-19 22:22:08,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-19 22:22:08,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-19 22:22:08,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:08,238 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-19 22:22:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-19 22:22:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-19 22:22:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-19 22:22:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-19 22:22:08,276 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-19 22:22:08,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:22:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:22:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:22:08,281 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-19 22:22:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:22:08,357 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-19 22:22:08,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:22:08,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-19 22:22:08,360 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-19 22:22:08,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-19 22:22:08,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-19 22:22:08,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-19 22:22:08,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-19 22:22:08,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:22:08,362 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 22:22:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-19 22:22:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-19 22:22:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 22:22:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-19 22:22:08,365 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 22:22:08,365 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 22:22:08,365 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 22:22:08,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-19 22:22:08,367 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-19 22:22:08,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:08,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:08,368 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:22:08,368 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:08,368 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2019-11-19 22:22:08,368 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-11-19 22:22:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-19 22:22:08,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:08,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584181298] [2019-11-19 22:22:08,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:08,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584181298] [2019-11-19 22:22:08,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:22:08,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:22:08,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881021999] [2019-11-19 22:22:08,424 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:22:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-19 22:22:08,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:08,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265519120] [2019-11-19 22:22:08,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:08,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:08,463 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:08,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:08,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:08,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:08,463 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:08,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:08,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:08,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:08,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2019-11-19 22:22:08,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:08,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:08,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:08,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:08,582 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:08,583 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) [2019-11-19 22:22:08,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:08,597 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 [2019-11-19 22:22:08,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:22:08,604 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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:08,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:08,614 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:08,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:08,636 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:22:08,648 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:08,651 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:08,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:08,651 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:08,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:08,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:08,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:08,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:08,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:08,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2019-11-19 22:22:08,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:08,653 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:08,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:08,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:08,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:08,769 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) [2019-11-19 22:22:08,774 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 [2019-11-19 22:22:08,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:08,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:08,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:08,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:08,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:08,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:08,779 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 [2019-11-19 22:22:08,782 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) [2019-11-19 22:22:08,790 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 [2019-11-19 22:22:08,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:08,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:08,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:08,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:08,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:08,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:08,793 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 [2019-11-19 22:22:08,796 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:08,799 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:08,799 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) [2019-11-19 22:22:08,805 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:08,805 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:08,805 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:08,805 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Exception during sending of exit command (exit): Broken pipe [2019-11-19 22:22:08,809 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 [2019-11-19 22:22:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:08,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:08,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:08,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:08,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:08,851 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 [2019-11-19 22:22:08,851 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-19 22:22:08,867 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. [2019-11-19 22:22:08,868 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 [2019-11-19 22:22:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:22:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-19 22:22:08,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:22:08,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:08,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:22:08,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:08,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-19 22:22:08,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:08,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-19 22:22:08,871 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-19 22:22:08,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-19 22:22:08,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-19 22:22:08,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-19 22:22:08,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-19 22:22:08,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:08,873 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-19 22:22:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-19 22:22:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-19 22:22:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:22:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-19 22:22:08,877 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-19 22:22:08,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:22:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:22:08,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:22:08,878 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-19 22:22:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:22:08,932 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-19 22:22:08,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:22:08,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-19 22:22:08,933 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 22:22:08,934 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-19 22:22:08,934 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-19 22:22:08,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-19 22:22:08,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-19 22:22:08,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:22:08,935 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-19 22:22:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-19 22:22:08,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-19 22:22:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 22:22:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-19 22:22:08,938 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-19 22:22:08,938 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-19 22:22:08,938 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 22:22:08,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-19 22:22:08,939 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 22:22:08,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:08,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:08,940 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:22:08,940 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:08,940 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-19 22:22:08,940 INFO L796 eck$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 [2019-11-19 22:22:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-19 22:22:08,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:08,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208817793] [2019-11-19 22:22:08,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:08,966 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,968 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-19 22:22:08,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:08,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215215554] [2019-11-19 22:22:08,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:08,984 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-19 22:22:08,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:08,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93205461] [2019-11-19 22:22:08,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:09,049 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:09,074 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:09,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:09,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:09,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:09,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:09,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:09,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:09,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2019-11-19 22:22:09,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:09,075 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:09,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:09,164 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) [2019-11-19 22:22:09,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:09,172 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:22:09,182 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) [2019-11-19 22:22:09,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:09,200 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) [2019-11-19 22:22:09,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:09,219 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,226 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:09,228 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:09,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:09,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:09,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:09,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:09,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:09,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:09,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2019-11-19 22:22:09,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:09,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:09,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:09,315 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) [2019-11-19 22:22:09,332 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 [2019-11-19 22:22:09,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:09,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:09,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:09,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:09,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:09,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:09,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,341 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) [2019-11-19 22:22:09,358 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 [2019-11-19 22:22:09,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:09,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:09,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:09,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:09,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:09,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:09,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,369 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:09,372 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:09,372 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) [2019-11-19 22:22:09,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:09,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:09,386 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:09,386 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,389 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:22:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:09,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:09,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:09,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:09,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-11-19 22:22:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:09,504 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 [2019-11-19 22:22:09,504 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 22:22:09,522 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. [2019-11-19 22:22:09,523 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 [2019-11-19 22:22:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:22:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 22:22:09,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:22:09,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:09,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:22:09,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:09,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-19 22:22:09,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:09,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-19 22:22:09,527 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 22:22:09,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-19 22:22:09,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-19 22:22:09,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-19 22:22:09,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-19 22:22:09,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:09,533 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-19 22:22:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-19 22:22:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-19 22:22:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 22:22:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-19 22:22:09,538 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-19 22:22:09,539 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-19 22:22:09,540 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 22:22:09,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-19 22:22:09,541 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-19 22:22:09,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:09,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:09,542 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:22:09,542 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:09,543 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2019-11-19 22:22:09,543 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 [2019-11-19 22:22:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:09,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-19 22:22:09,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:09,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085618640] [2019-11-19 22:22:09,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:09,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085618640] [2019-11-19 22:22:09,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:22:09,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:22:09,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65779319] [2019-11-19 22:22:09,618 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:22:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-19 22:22:09,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:09,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124205734] [2019-11-19 22:22:09,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:09,639 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:09,665 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:09,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:09,665 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:09,665 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:09,666 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:09,666 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:09,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:09,666 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2019-11-19 22:22:09,666 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:09,666 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:09,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,760 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:09,761 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 [2019-11-19 22:22:09,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:09,776 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 [2019-11-19 22:22:09,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:09,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:22:09,804 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:09,807 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:09,807 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:09,807 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:09,807 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:09,807 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:09,807 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:09,807 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:09,807 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:09,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2019-11-19 22:22:09,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:09,808 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:09,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:09,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:09,897 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) [2019-11-19 22:22:09,911 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 [2019-11-19 22:22:09,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:09,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:09,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:09,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:09,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:09,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:09,915 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 [2019-11-19 22:22:09,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:09,924 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:09,924 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) [2019-11-19 22:22:09,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:09,934 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:09,934 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:09,934 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:22:09,937 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 [2019-11-19 22:22:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:09,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:09,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:09,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:09,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:09,984 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 [2019-11-19 22:22:09,984 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-19 22:22:10,003 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. [2019-11-19 22:22:10,004 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 [2019-11-19 22:22:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:22:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 22:22:10,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:22:10,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:22:10,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-19 22:22:10,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,006 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-19 22:22:10,006 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 22:22:10,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-19 22:22:10,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-19 22:22:10,009 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-19 22:22:10,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-19 22:22:10,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:10,012 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-19 22:22:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-19 22:22:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-19 22:22:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:22:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-19 22:22:10,016 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-19 22:22:10,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:22:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:22:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:22:10,017 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-19 22:22:10,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:22:10,064 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-19 22:22:10,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:22:10,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-19 22:22:10,065 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 22:22:10,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-19 22:22:10,068 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-19 22:22:10,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-19 22:22:10,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-19 22:22:10,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:10,069 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-19 22:22:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-19 22:22:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-19 22:22:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:22:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-19 22:22:10,073 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-19 22:22:10,073 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-19 22:22:10,074 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 22:22:10,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-19 22:22:10,074 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 22:22:10,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:10,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:10,075 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:22:10,076 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:10,076 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-19 22:22:10,076 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-19 22:22:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-19 22:22:10,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:10,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385412979] [2019-11-19 22:22:10,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:10,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385412979] [2019-11-19 22:22:10,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:22:10,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:22:10,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500914345] [2019-11-19 22:22:10,112 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:22:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-19 22:22:10,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:10,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248157783] [2019-11-19 22:22:10,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:10,118 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:10,136 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:10,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:10,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:10,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:10,137 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:10,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:10,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:10,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2019-11-19 22:22:10,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:10,138 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:10,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,206 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:10,207 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) [2019-11-19 22:22:10,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:10,212 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 [2019-11-19 22:22:10,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:22:10,219 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) [2019-11-19 22:22:10,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:10,228 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) [2019-11-19 22:22:10,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:10,238 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 [2019-11-19 22:22:10,245 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:10,247 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:10,247 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:10,247 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:10,247 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:10,247 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:10,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:10,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:10,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2019-11-19 22:22:10,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:10,248 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:10,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,315 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:10,316 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) [2019-11-19 22:22:10,320 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 [2019-11-19 22:22:10,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:10,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:10,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:10,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:10,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:10,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:10,324 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 [2019-11-19 22:22:10,328 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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,336 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 [2019-11-19 22:22:10,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:10,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:10,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:10,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:10,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:10,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:10,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:22:10,343 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:10,347 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:10,347 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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,351 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:10,351 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:10,351 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:10,351 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 22:22:10,353 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:22:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:10,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:10,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:10,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:10,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:10,409 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 [2019-11-19 22:22:10,409 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-19 22:22:10,420 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. [2019-11-19 22:22:10,420 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 [2019-11-19 22:22:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:22:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 22:22:10,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:22:10,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-19 22:22:10,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-19 22:22:10,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-19 22:22:10,423 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-19 22:22:10,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-19 22:22:10,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-19 22:22:10,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-19 22:22:10,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-19 22:22:10,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:10,424 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-19 22:22:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-19 22:22:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-19 22:22:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 22:22:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-19 22:22:10,427 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-19 22:22:10,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:22:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:22:10,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:22:10,428 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-19 22:22:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:22:10,490 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-19 22:22:10,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:22:10,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-19 22:22:10,492 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 22:22:10,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-19 22:22:10,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-19 22:22:10,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-19 22:22:10,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-19 22:22:10,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:10,493 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-19 22:22:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-19 22:22:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-19 22:22:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 22:22:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-19 22:22:10,495 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-19 22:22:10,496 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-19 22:22:10,496 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-19 22:22:10,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-19 22:22:10,496 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 22:22:10,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:10,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:10,497 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:22:10,497 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:10,498 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2019-11-19 22:22:10,498 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 [2019-11-19 22:22:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-19 22:22:10,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:10,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881631801] [2019-11-19 22:22:10,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:10,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881631801] [2019-11-19 22:22:10,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:22:10,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:22:10,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684817801] [2019-11-19 22:22:10,544 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:22:10,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:10,544 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-19 22:22:10,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:10,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920037363] [2019-11-19 22:22:10,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:10,553 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:10,575 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:10,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:10,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:10,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:10,576 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:10,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:10,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:10,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2019-11-19 22:22:10,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:10,576 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:10,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,670 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:10,670 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) [2019-11-19 22:22:10,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:10,683 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) [2019-11-19 22:22:10,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:10,695 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 [2019-11-19 22:22:10,702 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:10,705 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:10,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:10,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:10,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:10,705 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:10,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:10,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:10,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2019-11-19 22:22:10,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:10,706 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:10,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:10,788 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:10,788 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) [2019-11-19 22:22:10,800 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 [2019-11-19 22:22:10,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:10,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:10,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:10,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:10,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:10,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:10,803 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 [2019-11-19 22:22:10,806 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:10,809 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:10,809 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) [2019-11-19 22:22:10,814 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:10,814 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:10,814 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:10,814 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:22:10,816 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:10,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:10,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:10,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:10,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:10,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:10,906 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 [2019-11-19 22:22:10,906 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-19 22:22:10,915 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. [2019-11-19 22:22:10,916 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 [2019-11-19 22:22:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:22:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-19 22:22:10,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-19 22:22:10,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-19 22:22:10,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-19 22:22:10,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:10,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-19 22:22:10,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:22:10,923 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-19 22:22:10,923 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-19 22:22:10,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-19 22:22:10,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-19 22:22:10,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:10,925 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-19 22:22:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-19 22:22:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-19 22:22:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:22:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-19 22:22:10,927 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-19 22:22:10,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:22:10,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:22:10,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:22:10,928 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-19 22:22:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:22:10,988 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-19 22:22:10,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:22:10,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-19 22:22:10,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:22:10,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-19 22:22:10,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-19 22:22:10,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-19 22:22:10,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-19 22:22:10,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:22:10,991 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-19 22:22:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-19 22:22:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-19 22:22:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-19 22:22:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-19 22:22:10,993 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-19 22:22:10,994 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-19 22:22:10,998 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-19 22:22:10,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-19 22:22:10,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:22:10,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:22:10,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:22:11,000 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:22:11,000 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:22:11,001 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-19 22:22:11,001 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 [2019-11-19 22:22:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-19 22:22:11,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:11,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703087703] [2019-11-19 22:22:11,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:11,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703087703] [2019-11-19 22:22:11,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289449] [2019-11-19 22:22:11,054 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 [2019-11-19 22:22:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:11,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:11,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:11,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:22:11,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-19 22:22:11,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275115412] [2019-11-19 22:22:11,107 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:22:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:11,108 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-19 22:22:11,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:22:11,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848802550] [2019-11-19 22:22:11,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:22:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:22:11,122 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:22:11,145 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:11,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:11,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:11,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:11,145 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:22:11,145 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:11,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:11,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:11,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2019-11-19 22:22:11,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:11,146 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:11,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:11,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:11,224 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:11,224 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) [2019-11-19 22:22:11,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:11,233 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 [2019-11-19 22:22:11,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:22:11,240 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) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:11,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:22:11,248 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:11,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:22:11,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:22:11,272 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:22:11,274 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:22:11,275 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:22:11,275 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:22:11,275 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:22:11,275 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:22:11,275 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:11,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:22:11,275 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:22:11,275 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2019-11-19 22:22:11,275 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:22:11,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:22:11,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:11,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:22:11,344 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:22:11,345 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) [2019-11-19 22:22:11,349 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:11,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:11,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:11,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:11,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:11,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:11,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:11,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:22:11,355 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) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:22:11,374 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 [2019-11-19 22:22:11,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:22:11,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:22:11,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:22:11,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:22:11,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:22:11,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:22:11,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:22:11,380 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:22:11,382 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:22:11,382 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 [2019-11-19 22:22:11,385 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:22:11,385 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:22:11,386 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:22:11,386 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 22:22:11,387 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:22:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:22:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:11,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:22:11,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:22:11,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:22:11,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:22:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:22:11,445 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 [2019-11-19 22:22:11,445 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 22:22:11,454 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. [2019-11-19 22:22:11,454 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 [2019-11-19 22:22:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:22:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-19 22:22:11,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-19 22:22:11,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:11,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-19 22:22:11,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:11,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-19 22:22:11,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:22:11,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-19 22:22:11,457 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:22:11,457 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-19 22:22:11,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:22:11,457 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:22:11,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:22:11,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:22:11,457 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:22:11,458 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:22:11,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:22:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:22:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:22:11,458 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-19 22:22:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:22:11,459 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-19 22:22:11,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 22:22:11,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-19 22:22:11,459 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:22:11,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:22:11,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:22:11,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:22:11,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:22:11,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:22:11,460 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:22:11,460 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:22:11,460 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:22:11,460 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-19 22:22:11,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:22:11,461 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:22:11,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 22:22:11,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 10:22:11 BoogieIcfgContainer [2019-11-19 22:22:11,469 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 22:22:11,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:22:11,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:22:11,470 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:22:11,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:22:07" (3/4) ... [2019-11-19 22:22:11,474 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 22:22:11,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:22:11,478 INFO L168 Benchmark]: Toolchain (without parser) took 5510.17 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 959.0 MB in the beginning and 909.8 MB in the end (delta: 49.2 MB). Peak memory consumption was 274.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:22:11,480 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:22:11,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:22:11,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.16 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. [2019-11-19 22:22:11,493 INFO L168 Benchmark]: Boogie Preprocessor took 36.86 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:22:11,493 INFO L168 Benchmark]: RCFGBuilder took 572.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:22:11,495 INFO L168 Benchmark]: BuchiAutomizer took 4418.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 909.8 MB in the end (delta: 199.8 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:22:11,495 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 1.3 GB. Free memory is still 909.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:22:11,505 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 424.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.16 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 36.86 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 572.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4418.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 909.8 MB in the end (delta: 199.8 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.74 ms. Allocated memory is still 1.3 GB. Free memory is still 909.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. 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: 32ms 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...