./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.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 fa5701cbf2aecb18d72b6e5744b88307065d31ab .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 03:05:41,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:05:41,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:05:41,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:05:41,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:05:41,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:05:41,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:05:41,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:05:41,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:05:41,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:05:41,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:05:41,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:05:41,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:05:41,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:05:41,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:05:41,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:05:41,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:05:41,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:05:41,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:05:41,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:05:41,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:05:41,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:05:41,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:05:41,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:05:41,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:05:41,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:05:41,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:05:41,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:05:41,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:05:41,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:05:41,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:05:41,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:05:41,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:05:41,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:05:41,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:05:41,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:05:41,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:05:41,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:05:41,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:05:41,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:05:41,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:05:41,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:05:41,391 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:05:41,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:05:41,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:05:41,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:05:41,393 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:05:41,393 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:05:41,393 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:05:41,394 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:05:41,394 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:05:41,394 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:05:41,394 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:05:41,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:05:41,395 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:05:41,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:05:41,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:05:41,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:05:41,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:05:41,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:05:41,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:05:41,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:05:41,397 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:05:41,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:05:41,398 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:05:41,398 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:05:41,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:05:41,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:05:41,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:05:41,399 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:05:41,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:05:41,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:05:41,400 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:05:41,401 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:05:41,402 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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-28 03:05:41,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:05:41,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:05:41,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:05:41,702 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:05:41,703 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:05:41,704 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-28 03:05:41,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a37c8a2/2ec9be12cf6c41d9a8d3df3b74c48ddd/FLAGf955c01e0 [2019-11-28 03:05:42,222 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:05:42,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-28 03:05:42,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a37c8a2/2ec9be12cf6c41d9a8d3df3b74c48ddd/FLAGf955c01e0 [2019-11-28 03:05:42,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a37c8a2/2ec9be12cf6c41d9a8d3df3b74c48ddd [2019-11-28 03:05:42,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:05:42,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:05:42,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:05:42,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:05:42,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:05:42,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:42" (1/1) ... [2019-11-28 03:05:42,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3a5153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:42, skipping insertion in model container [2019-11-28 03:05:42,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:42" (1/1) ... [2019-11-28 03:05:42,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:05:42,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:05:42,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:05:42,877 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:05:42,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:05:42,999 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:05:43,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43 WrapperNode [2019-11-28 03:05:43,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:05:43,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:05:43,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:05:43,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:05:43,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:05:43,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:05:43,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:05:43,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:05:43,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... [2019-11-28 03:05:43,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:05:43,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:05:43,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:05:43,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:05:43,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:05:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:05:43,655 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:05:43,655 INFO L297 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-28 03:05:43,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:43 BoogieIcfgContainer [2019-11-28 03:05:43,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:05:43,657 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:05:43,657 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:05:43,661 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:05:43,662 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:05:43,662 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:05:42" (1/3) ... [2019-11-28 03:05:43,663 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61a97da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:05:43, skipping insertion in model container [2019-11-28 03:05:43,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:05:43,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:43" (2/3) ... [2019-11-28 03:05:43,664 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61a97da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:05:43, skipping insertion in model container [2019-11-28 03:05:43,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:05:43,665 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:43" (3/3) ... [2019-11-28 03:05:43,666 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-28 03:05:43,721 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:05:43,721 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:05:43,721 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:05:43,723 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:05:43,724 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:05:43,724 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:05:43,724 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:05:43,724 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:05:43,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states. [2019-11-28 03:05:43,766 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 03:05:43,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:43,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:43,774 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:05:43,774 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:43,774 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:05:43,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states. [2019-11-28 03:05:43,780 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 03:05:43,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:43,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:43,781 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 03:05:43,782 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:43,790 INFO L794 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 40#L19true assume !(0 == base2flt_~m % 4294967296); 28#L25true assume !(base2flt_~m % 4294967296 < 16777216); 21#L47-2true [2019-11-28 03:05:43,791 INFO L796 eck$LassoCheckResult]: Loop: 21#L47-2true assume !false; 34#L48true assume base2flt_~m % 4294967296 >= 33554432; 56#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 21#L47-2true [2019-11-28 03:05:43,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:43,797 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-28 03:05:43,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:43,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632416383] [2019-11-28 03:05:43,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:43,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632416383] [2019-11-28 03:05:43,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:05:43,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 03:05:43,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818142227] [2019-11-28 03:05:43,981 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 03:05:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-28 03:05:43,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:43,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201918409] [2019-11-28 03:05:43,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,024 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:44,072 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:44,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:44,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:44,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:44,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:44,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:44,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:44,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration1_Loop [2019-11-28 03:05:44,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:44,075 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:44,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,253 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:44,253 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:44,259 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:44,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:44,285 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:44,288 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:44,288 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:44,288 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:44,288 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:44,289 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:44,289 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,289 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:44,289 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:44,289 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration1_Loop [2019-11-28 03:05:44,289 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:44,290 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:44,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,406 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:44,412 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 03:05:44,419 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:44,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:44,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:44,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:44,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:44,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:44,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:44,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,431 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:44,440 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:44,441 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:44,448 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:44,448 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:44,449 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:44,450 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,464 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:44,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:44,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:44,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:44,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:44,550 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:44,552 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78 states. Second operand 3 states. [2019-11-28 03:05:44,662 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78 states.. Second operand 3 states. Result 232 states and 360 transitions. Complement of second has 6 states. [2019-11-28 03:05:44,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2019-11-28 03:05:44,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 235 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 03:05:44,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:44,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 235 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 03:05:44,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:44,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 235 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 03:05:44,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:44,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 232 states and 360 transitions. [2019-11-28 03:05:44,683 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-28 03:05:44,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 232 states to 56 states and 81 transitions. [2019-11-28 03:05:44,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2019-11-28 03:05:44,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-28 03:05:44,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2019-11-28 03:05:44,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:44,693 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2019-11-28 03:05:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2019-11-28 03:05:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2019-11-28 03:05:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 03:05:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2019-11-28 03:05:44,725 INFO L711 BuchiCegarLoop]: Abstraction has 45 states and 69 transitions. [2019-11-28 03:05:44,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:05:44,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:05:44,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:05:44,730 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 3 states. [2019-11-28 03:05:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:05:44,777 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2019-11-28 03:05:44,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:05:44,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-28 03:05:44,780 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 03:05:44,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 30 transitions. [2019-11-28 03:05:44,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-28 03:05:44,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-28 03:05:44,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-11-28 03:05:44,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:05:44,782 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 03:05:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-11-28 03:05:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 03:05:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 03:05:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-11-28 03:05:44,784 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 03:05:44,785 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 03:05:44,785 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:05:44,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 30 transitions. [2019-11-28 03:05:44,786 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 03:05:44,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:44,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:44,787 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:05:44,787 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:44,788 INFO L794 eck$LassoCheckResult]: Stem: 439#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 438#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 426#L69 base2flt_#res := base2flt_~__retres4~0; 427#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 434#L19-1 assume !(0 == base2flt_~m % 4294967296); 437#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 431#L47-5 [2019-11-28 03:05:44,788 INFO L796 eck$LassoCheckResult]: Loop: 431#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 423#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 431#L47-5 [2019-11-28 03:05:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-28 03:05:44,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:44,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977522402] [2019-11-28 03:05:44,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,811 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-28 03:05:44,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:44,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811937286] [2019-11-28 03:05:44,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,827 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973968, now seen corresponding path program 1 times [2019-11-28 03:05:44,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:44,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746551704] [2019-11-28 03:05:44,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:44,876 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:44,910 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:44,910 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:44,910 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:44,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:44,911 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:44,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:44,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:44,911 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:44,911 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration2_Loop [2019-11-28 03:05:44,911 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:44,912 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:44,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:44,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,022 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:45,023 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:45,030 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:45,040 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:45,053 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:45,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:45,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:45,089 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:45,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:45,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:45,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:45,090 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:45,090 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,090 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:45,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:45,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration2_Loop [2019-11-28 03:05:45,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:45,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:45,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,191 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:45,191 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,205 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:45,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:45,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:45,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:45,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:45,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:45,211 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:05:45,214 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:45,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:45,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:45,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:45,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:45,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:45,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:45,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,238 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:45,241 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:45,241 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,255 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:45,255 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:45,255 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:45,255 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 03:05:45,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:45,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:45,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:45,328 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:45,329 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11 Second operand 3 states. [2019-11-28 03:05:45,350 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 40 states and 50 transitions. Complement of second has 5 states. [2019-11-28 03:05:45,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2019-11-28 03:05:45,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 03:05:45,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:45,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 03:05:45,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2019-11-28 03:05:45,357 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 03:05:45,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 37 states and 46 transitions. [2019-11-28 03:05:45,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-28 03:05:45,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 03:05:45,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2019-11-28 03:05:45,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:45,359 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-11-28 03:05:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2019-11-28 03:05:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-11-28 03:05:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 03:05:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-11-28 03:05:45,363 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 03:05:45,363 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 03:05:45,363 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 03:05:45,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2019-11-28 03:05:45,364 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 03:05:45,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:45,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:45,365 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:05:45,365 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:45,365 INFO L794 eck$LassoCheckResult]: Stem: 553#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 550#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 540#L69 base2flt_#res := base2flt_~__retres4~0; 541#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 546#L19-1 assume !(0 == base2flt_~m % 4294967296); 549#L25-1 assume base2flt_~m % 4294967296 < 16777216; 554#L37-3 [2019-11-28 03:05:45,365 INFO L796 eck$LassoCheckResult]: Loop: 554#L37-3 assume !false; 544#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 545#L37-2 assume base2flt_~m % 4294967296 < 16777216; 554#L37-3 [2019-11-28 03:05:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,366 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-28 03:05:45,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394802764] [2019-11-28 03:05:45,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,387 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-28 03:05:45,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075682987] [2019-11-28 03:05:45,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-28 03:05:45,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643162016] [2019-11-28 03:05:45,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,430 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,452 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:45,452 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:45,452 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:45,452 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:45,452 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:45,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,453 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:45,453 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:45,453 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration3_Loop [2019-11-28 03:05:45,453 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:45,453 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:45,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,540 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:45,540 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:45,558 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 03:05:45,566 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:45,583 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:45,605 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 [2019-11-28 03:05:45,614 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:45,617 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:45,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:45,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:45,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:45,617 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:45,618 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:45,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:45,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration3_Loop [2019-11-28 03:05:45,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:45,619 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:45,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:45,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:45,716 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:45,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:45,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:45,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:45,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:45,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:45,729 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:45,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,734 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:45,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:45,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:45,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:45,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:45,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:45,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:45,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,754 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:45,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:45,757 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:45,762 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:45,762 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:45,762 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:45,762 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,767 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:45,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:45,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:45,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:45,831 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:05:45,831 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-28 03:05:45,847 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 44 states and 55 transitions. Complement of second has 5 states. [2019-11-28 03:05:45,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 03:05:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2019-11-28 03:05:45,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 03:05:45,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:45,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 03:05:45,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:45,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-28 03:05:45,851 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 03:05:45,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 51 transitions. [2019-11-28 03:05:45,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-28 03:05:45,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-28 03:05:45,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-11-28 03:05:45,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:45,853 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-11-28 03:05:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-11-28 03:05:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2019-11-28 03:05:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 03:05:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-28 03:05:45,857 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-28 03:05:45,857 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-28 03:05:45,857 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 03:05:45,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2019-11-28 03:05:45,858 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 03:05:45,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:45,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:45,859 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:05:45,859 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:45,860 INFO L794 eck$LassoCheckResult]: Stem: 672#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 669#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 656#L69 base2flt_#res := base2flt_~__retres4~0; 657#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 665#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 660#L69-1 base2flt_#res := base2flt_~__retres4~0; 658#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 659#L19-2 assume !(0 == base2flt_~m % 4294967296); 666#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 648#L47-8 [2019-11-28 03:05:45,860 INFO L796 eck$LassoCheckResult]: Loop: 648#L47-8 assume !false; 667#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 647#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 648#L47-8 [2019-11-28 03:05:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-28 03:05:45,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600276078] [2019-11-28 03:05:45,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,882 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-28 03:05:45,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510864088] [2019-11-28 03:05:45,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,895 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1766695638, now seen corresponding path program 1 times [2019-11-28 03:05:45,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:45,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818496504] [2019-11-28 03:05:45,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:45,934 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:45,996 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:45,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:45,996 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:45,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:45,996 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:45,997 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:45,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:45,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:45,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration4_Loop [2019-11-28 03:05:45,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:45,998 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:45,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,110 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,110 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 03:05:46,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:46,117 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:46,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:46,136 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,178 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:46,183 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:46,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:46,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:46,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:46,183 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:46,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:46,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:46,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration4_Loop [2019-11-28 03:05:46,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:46,184 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:46,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,292 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,293 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 03:05:46,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:46,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:46,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:46,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:46,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:46,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:46,312 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:46,312 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,316 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:46,320 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:46,320 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,333 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:46,333 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:46,334 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:46,334 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-28 03:05:46,337 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 03:05:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:46,384 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 03:05:46,385 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-28 03:05:46,390 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 4 states. [2019-11-28 03:05:46,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 03:05:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2019-11-28 03:05:46,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:46,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 03:05:46,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 03:05:46,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2019-11-28 03:05:46,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:05:46,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 34 transitions. [2019-11-28 03:05:46,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-28 03:05:46,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-28 03:05:46,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2019-11-28 03:05:46,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 03:05:46,395 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 03:05:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2019-11-28 03:05:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 03:05:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 03:05:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-11-28 03:05:46,398 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 03:05:46,398 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 03:05:46,398 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 03:05:46,398 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2019-11-28 03:05:46,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 03:05:46,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:05:46,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:05:46,400 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:05:46,400 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 03:05:46,400 INFO L794 eck$LassoCheckResult]: Stem: 784#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 782#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 := 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; 779#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 774#L69-1 base2flt_#res := base2flt_~__retres4~0; 772#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 773#L19-2 assume !(0 == base2flt_~m % 4294967296); 780#L25-2 assume base2flt_~m % 4294967296 < 16777216; 785#L37-5 [2019-11-28 03:05:46,400 INFO L796 eck$LassoCheckResult]: Loop: 785#L37-5 assume !false; 768#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 769#L37-4 assume base2flt_~m % 4294967296 < 16777216; 785#L37-5 [2019-11-28 03:05:46,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951170, now seen corresponding path program 1 times [2019-11-28 03:05:46,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856531077] [2019-11-28 03:05:46,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,418 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,419 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-28 03:05:46,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712923808] [2019-11-28 03:05:46,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,432 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1765895313, now seen corresponding path program 1 times [2019-11-28 03:05:46,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:05:46,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204429599] [2019-11-28 03:05:46,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:05:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:05:46,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:05:46,506 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:46,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:46,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:46,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:46,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 03:05:46,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:46,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:46,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration5_Loop [2019-11-28 03:05:46,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:46,508 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:46,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,574 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,575 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:46,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 03:05:46,581 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 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 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 03:05:46,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 03:05:46,611 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 03:05:46,614 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 03:05:46,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 03:05:46,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 03:05:46,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 03:05:46,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 03:05:46,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 03:05:46,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 03:05:46,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration5_Loop [2019-11-28 03:05:46,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 03:05:46,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 03:05:46,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 03:05:46,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 03:05:46,678 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,685 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 03:05:46,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 03:05:46,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 03:05:46,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 03:05:46,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 03:05:46,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 03:05:46,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 03:05:46,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 03:05:46,692 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 03:05:46,699 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 03:05:46,699 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 03:05:46,704 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 03:05:46,704 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 03:05:46,704 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 03:05:46,704 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-28 03:05:46,707 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:05:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:05:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:05:46,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 03:05:46,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 03:05:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:05:46,763 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 03:05:46,763 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-28 03:05:46,769 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 30 states and 38 transitions. Complement of second has 4 states. [2019-11-28 03:05:46,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 03:05:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 03:05:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2019-11-28 03:05:46,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 03:05:46,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 03:05:46,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 03:05:46,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 03:05:46,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2019-11-28 03:05:46,772 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:05:46,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2019-11-28 03:05:46,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 03:05:46,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 03:05:46,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 03:05:46,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:05:46,773 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:46,773 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:46,773 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 03:05:46,773 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 03:05:46,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 03:05:46,774 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 03:05:46,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 03:05:46,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:05:46 BoogieIcfgContainer [2019-11-28 03:05:46,781 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:05:46,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:05:46,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:05:46,782 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:05:46,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:43" (3/4) ... [2019-11-28 03:05:46,786 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 03:05:46,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:05:46,789 INFO L168 Benchmark]: Toolchain (without parser) took 4200.17 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.4 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:46,790 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:05:46,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:46,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:05:46,792 INFO L168 Benchmark]: Boogie Preprocessor took 33.45 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. [2019-11-28 03:05:46,793 INFO L168 Benchmark]: RCFGBuilder took 562.77 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:46,794 INFO L168 Benchmark]: BuchiAutomizer took 3124.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -24.8 MB). Peak memory consumption was 61.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:05:46,794 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:05:46,798 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 411.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.95 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 33.45 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 562.77 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3124.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -24.8 MB). Peak memory consumption was 61.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.91 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 253 SDtfs, 221 SDslu, 26 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...