./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e1b4e42babcfba0789bfa7cb90840c832d315a4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:38:12,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:38:12,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:38:12,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:38:12,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:38:12,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:38:12,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:38:12,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:38:12,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:38:12,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:38:12,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:38:12,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:38:12,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:38:12,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:38:12,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:38:12,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:38:12,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:38:12,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:38:12,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:38:12,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:38:12,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:38:12,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:38:12,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:38:12,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:38:12,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:38:12,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:38:12,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:38:12,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:38:12,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:38:12,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:38:12,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:38:12,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:38:12,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:38:12,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:38:12,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:38:12,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:38:12,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:38:12,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:38:12,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:38:12,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:38:12,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:38:12,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:38:12,269 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:38:12,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:38:12,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:38:12,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:38:12,271 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:38:12,272 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:38:12,273 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:38:12,273 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:38:12,273 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:38:12,273 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:38:12,275 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:38:12,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:38:12,275 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:38:12,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:38:12,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:38:12,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:38:12,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:38:12,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:38:12,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:38:12,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:38:12,278 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:38:12,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:38:12,278 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:38:12,279 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:38:12,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:38:12,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:38:12,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:38:12,280 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:38:12,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:38:12,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:38:12,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:38:12,282 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:38:12,284 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:38:12,284 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1b4e42babcfba0789bfa7cb90840c832d315a4 [2019-11-28 20:38:12,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:38:12,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:38:12,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:38:12,591 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:38:12,591 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:38:12,592 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-11-28 20:38:12,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbd35ef5/76f406c41e8a41969caf4d93d26656f2/FLAG168649f9b [2019-11-28 20:38:13,107 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:38:13,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-11-28 20:38:13,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbd35ef5/76f406c41e8a41969caf4d93d26656f2/FLAG168649f9b [2019-11-28 20:38:13,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbd35ef5/76f406c41e8a41969caf4d93d26656f2 [2019-11-28 20:38:13,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:38:13,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:38:13,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:38:13,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:38:13,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:38:13,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cff6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13, skipping insertion in model container [2019-11-28 20:38:13,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:38:13,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:38:13,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:38:13,742 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:38:13,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:38:13,860 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:38:13,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13 WrapperNode [2019-11-28 20:38:13,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:38:13,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:38:13,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:38:13,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:38:13,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:38:13,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:38:13,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:38:13,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:38:13,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (1/1) ... [2019-11-28 20:38:13,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:38:13,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:38:13,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:38:13,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:38:13,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (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 20:38:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:38:14,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:38:14,453 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:38:14,453 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 20:38:14,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:14 BoogieIcfgContainer [2019-11-28 20:38:14,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:38:14,456 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:38:14,456 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:38:14,459 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:38:14,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:14,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:38:13" (1/3) ... [2019-11-28 20:38:14,462 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16daca38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:38:14, skipping insertion in model container [2019-11-28 20:38:14,462 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:14,462 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:13" (2/3) ... [2019-11-28 20:38:14,463 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16daca38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:38:14, skipping insertion in model container [2019-11-28 20:38:14,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:14,463 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:14" (3/3) ... [2019-11-28 20:38:14,465 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-11-28 20:38:14,512 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:38:14,512 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:38:14,512 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:38:14,513 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:38:14,513 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:38:14,513 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:38:14,513 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:38:14,513 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:38:14,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-28 20:38:14,560 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 20:38:14,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:14,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:14,568 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:38:14,568 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:14,568 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:38:14,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-28 20:38:14,573 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 20:38:14,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:14,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:14,574 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:38:14,574 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:14,580 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-11-28 20:38:14,580 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2019-11-28 20:38:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-28 20:38:14,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309460098] [2019-11-28 20:38:14,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:14,751 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 20:38:14,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309460098] [2019-11-28 20:38:14,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:14,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:38:14,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969758204] [2019-11-28 20:38:14,764 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:14,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,764 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-28 20:38:14,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974209359] [2019-11-28 20:38:14,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,823 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:14,862 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:14,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:14,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:14,863 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:14,864 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:14,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:14,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:14,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-11-28 20:38:14,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:14,866 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:14,883 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 20:38:14,899 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 20:38:15,021 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,022 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,033 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,049 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:15,049 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,064 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:15,081 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,090 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:15,093 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,094 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:15,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-11-28 20:38:15,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,095 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,096 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 20:38:15,107 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 20:38:15,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,212 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,220 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 20:38:15,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:15,235 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,244 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 20:38:15,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:15,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:15,263 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:15,263 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,268 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:15,268 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:15,269 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:15,269 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 20:38:15,276 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,328 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,339 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,341 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 20:38:15,358 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 20:38:15,360 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-11-28 20:38:15,463 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2019-11-28 20:38:15,466 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 20:38:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-11-28 20:38:15,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 20:38:15,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:15,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 20:38:15,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-11-28 20:38:15,487 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-28 20:38:15,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-11-28 20:38:15,501 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-28 20:38:15,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-28 20:38:15,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-28 20:38:15,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:15,505 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-28 20:38:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-28 20:38:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-28 20:38:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 20:38:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-28 20:38:15,536 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-28 20:38:15,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:15,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:15,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:15,541 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-28 20:38:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:15,613 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-28 20:38:15,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:15,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-28 20:38:15,615 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 20:38:15,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-28 20:38:15,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 20:38:15,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 20:38:15,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-28 20:38:15,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:15,617 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 20:38:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-28 20:38:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 20:38:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:38:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-28 20:38:15,621 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 20:38:15,621 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 20:38:15,621 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:38:15,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-28 20:38:15,622 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 20:38:15,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:15,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:15,623 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:38:15,623 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:15,624 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2019-11-28 20:38:15,624 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-11-28 20:38:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-28 20:38:15,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397813241] [2019-11-28 20:38:15,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:15,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397813241] [2019-11-28 20:38:15,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:15,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:38:15,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804066106] [2019-11-28 20:38:15,690 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-28 20:38:15,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101822194] [2019-11-28 20:38:15,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,719 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,743 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,743 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,743 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,744 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:15,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-11-28 20:38:15,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,745 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,746 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 20:38:15,756 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 20:38:15,849 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,849 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,856 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,863 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:15,863 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,882 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:15,905 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,914 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:15,917 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,918 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:15,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,919 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-11-28 20:38:15,919 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,919 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,922 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 20:38:15,931 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 20:38:16,019 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,020 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:16,046 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,062 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 20:38:16,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,073 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,073 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,077 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:16,080 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:16,080 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,093 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:16,093 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:16,093 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:16,093 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,097 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,133 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,142 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,143 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,143 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 20:38:16,144 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 20:38:16,144 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-28 20:38:16,168 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2019-11-28 20:38:16,169 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 20:38:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-28 20:38:16,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:16,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:16,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 20:38:16,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-28 20:38:16,175 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-28 20:38:16,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-28 20:38:16,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-28 20:38:16,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-28 20:38:16,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-28 20:38:16,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,179 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-28 20:38:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-28 20:38:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-28 20:38:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-28 20:38:16,188 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-28 20:38:16,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:16,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:16,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:16,189 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-28 20:38:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:16,250 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-28 20:38:16,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:16,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-28 20:38:16,252 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:16,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-28 20:38:16,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-28 20:38:16,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-28 20:38:16,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-28 20:38:16,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:16,253 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-28 20:38:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-28 20:38:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-28 20:38:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 20:38:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-28 20:38:16,256 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-28 20:38:16,256 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-28 20:38:16,257 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:38:16,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-28 20:38:16,257 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:16,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:16,258 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:16,258 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:38:16,258 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:16,259 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-28 20:38:16,259 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-28 20:38:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,259 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-28 20:38:16,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584011248] [2019-11-28 20:38:16,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,290 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-28 20:38:16,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945517941] [2019-11-28 20:38:16,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,310 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-28 20:38:16,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460590675] [2019-11-28 20:38:16,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,363 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,387 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,388 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,388 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:16,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-11-28 20:38:16,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,389 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,390 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 20:38:16,397 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 20:38:16,470 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,471 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,477 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 20:38:16,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:16,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,504 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:16,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:38:16,526 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:16,528 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,529 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:16,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-11-28 20:38:16,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,530 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,531 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 20:38:16,543 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 20:38:16,625 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,625 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,643 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 20:38:16,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,656 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,673 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 20:38:16,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:16,689 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:16,689 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:16,706 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:16,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:16,707 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:16,707 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 20:38:16,709 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,740 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,747 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,748 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,773 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 20:38:16,774 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 20:38:16,774 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 20:38:16,788 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2019-11-28 20:38:16,791 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 20:38:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 20:38:16,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:16,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:16,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 20:38:16,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-28 20:38:16,797 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 20:38:16,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-28 20:38:16,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-28 20:38:16,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-28 20:38:16,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-28 20:38:16,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,802 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-28 20:38:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-28 20:38:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-28 20:38:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:38:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-28 20:38:16,812 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-28 20:38:16,812 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-28 20:38:16,812 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:38:16,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-28 20:38:16,813 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:16,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:16,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:16,814 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:16,814 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:16,815 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2019-11-28 20:38:16,815 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2019-11-28 20:38:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-28 20:38:16,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119019762] [2019-11-28 20:38:16,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,875 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 20:38:16,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119019762] [2019-11-28 20:38:16,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:16,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:38:16,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474396557] [2019-11-28 20:38:16,877 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-28 20:38:16,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375424098] [2019-11-28 20:38:16,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,929 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,929 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,929 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,929 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,929 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:16,930 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,930 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,930 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,930 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-11-28 20:38:16,930 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,930 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:16,939 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 20:38:17,049 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,050 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,058 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:17,087 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:17,098 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,099 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:17,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-11-28 20:38:17,100 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,100 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,101 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 20:38:17,107 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 20:38:17,174 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,174 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,187 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 20:38:17,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,200 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:17,204 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:17,204 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:17,211 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:17,211 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:17,211 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,214 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,243 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,243 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,248 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,248 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,249 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 20:38:17,249 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 20:38:17,249 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-28 20:38:17,260 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2019-11-28 20:38:17,261 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 20:38:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 20:38:17,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:17,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 20:38:17,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 20:38:17,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-28 20:38:17,264 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:17,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-28 20:38:17,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 20:38:17,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-28 20:38:17,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-28 20:38:17,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:17,265 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-28 20:38:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-28 20:38:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-28 20:38:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-28 20:38:17,268 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-28 20:38:17,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:17,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:17,269 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-28 20:38:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:17,309 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-28 20:38:17,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:17,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-28 20:38:17,310 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:38:17,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-28 20:38:17,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 20:38:17,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 20:38:17,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-28 20:38:17,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:17,312 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-28 20:38:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-28 20:38:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-28 20:38:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-28 20:38:17,315 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-28 20:38:17,315 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-28 20:38:17,315 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:38:17,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-28 20:38:17,316 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:38:17,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:17,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:17,317 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:17,317 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:17,317 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-28 20:38:17,317 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-28 20:38:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-28 20:38:17,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602686132] [2019-11-28 20:38:17,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:17,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602686132] [2019-11-28 20:38:17,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:17,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:38:17,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459200334] [2019-11-28 20:38:17,349 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-28 20:38:17,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669381210] [2019-11-28 20:38:17,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,356 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:17,377 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,377 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,377 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,377 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:17,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,378 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-11-28 20:38:17,378 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,378 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,380 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 20:38:17,387 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 20:38:17,450 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,450 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,461 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,468 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:17,468 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,476 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:17,489 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,496 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:17,498 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,498 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,498 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:17,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-11-28 20:38:17,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,499 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,501 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 20:38:17,506 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 20:38:17,568 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,570 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,580 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 20:38:17,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,597 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 20:38:17,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,604 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:17,607 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:17,607 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,612 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:17,612 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:17,613 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:17,613 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 20:38:17,620 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,654 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,661 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,688 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 20:38:17,688 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 20:38:17,688 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-28 20:38:17,707 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2019-11-28 20:38:17,707 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 20:38:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 20:38:17,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 20:38:17,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-28 20:38:17,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-28 20:38:17,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-28 20:38:17,711 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:17,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-28 20:38:17,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-28 20:38:17,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-28 20:38:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-28 20:38:17,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:17,713 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-28 20:38:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-28 20:38:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-28 20:38:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 20:38:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-28 20:38:17,721 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-28 20:38:17,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:17,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:38:17,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:38:17,722 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-28 20:38:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:17,775 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-28 20:38:17,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:38:17,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-28 20:38:17,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:38:17,776 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-28 20:38:17,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-28 20:38:17,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-28 20:38:17,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-28 20:38:17,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:17,777 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-28 20:38:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-28 20:38:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-28 20:38:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 20:38:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-28 20:38:17,780 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-28 20:38:17,780 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-28 20:38:17,780 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:38:17,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-28 20:38:17,781 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:38:17,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:17,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:17,782 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:17,782 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:17,782 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2019-11-28 20:38:17,783 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2019-11-28 20:38:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-28 20:38:17,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099691415] [2019-11-28 20:38:17,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,828 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 20:38:17,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099691415] [2019-11-28 20:38:17,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:17,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:38:17,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034566300] [2019-11-28 20:38:17,829 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-28 20:38:17,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966263416] [2019-11-28 20:38:17,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,838 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:17,855 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,855 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,855 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,855 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,855 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:17,855 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,855 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,856 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,856 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-11-28 20:38:17,856 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,856 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,856 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 20:38:17,861 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 20:38:17,949 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,949 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,958 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:17,971 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,979 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:17,982 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:17,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-11-28 20:38:17,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,983 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,985 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 20:38:17,992 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 20:38:18,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:18,065 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,075 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 20:38:18,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:18,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:18,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:18,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:18,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:18,079 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:18,079 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,082 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:18,084 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:18,085 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,089 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:18,090 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:18,090 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:18,090 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 20:38:18,100 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:18,137 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:18,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:18,143 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:18,144 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:18,144 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 20:38:18,145 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 20:38:18,145 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-28 20:38:18,151 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2019-11-28 20:38:18,151 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 20:38:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-28 20:38:18,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-28 20:38:18,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:18,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-28 20:38:18,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:18,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-28 20:38:18,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:18,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-28 20:38:18,153 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:18,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-28 20:38:18,154 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-28 20:38:18,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-28 20:38:18,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-28 20:38:18,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:18,155 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 20:38:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-28 20:38:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-28 20:38:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-28 20:38:18,157 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 20:38:18,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:18,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:38:18,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:38:18,163 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-28 20:38:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:18,231 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-28 20:38:18,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:38:18,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-28 20:38:18,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:18,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-28 20:38:18,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-28 20:38:18,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-28 20:38:18,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-28 20:38:18,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:18,234 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-28 20:38:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-28 20:38:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-28 20:38:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 20:38:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-28 20:38:18,236 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-28 20:38:18,236 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-28 20:38:18,236 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 20:38:18,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-28 20:38:18,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:18,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:18,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:18,238 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:18,238 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:18,238 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-28 20:38:18,238 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-28 20:38:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-28 20:38:18,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:18,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877994373] [2019-11-28 20:38:18,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:18,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877994373] [2019-11-28 20:38:18,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569271540] [2019-11-28 20:38:18,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:38:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:18,338 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:18,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:18,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:38:18,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-28 20:38:18,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584948106] [2019-11-28 20:38:18,347 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:18,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-28 20:38:18,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:18,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735128269] [2019-11-28 20:38:18,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:18,365 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:18,409 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:18,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:18,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:18,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:18,409 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:18,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:18,410 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:18,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-11-28 20:38:18,410 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:18,410 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:18,411 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 20:38:18,421 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 20:38:18,472 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:18,473 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:18,487 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,499 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:18,500 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:18,507 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:18,522 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,530 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:18,532 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:18,532 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:18,532 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:18,532 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:18,532 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:18,533 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,533 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:18,533 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:18,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-11-28 20:38:18,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:18,533 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:18,534 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 20:38:18,540 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 20:38:18,592 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:18,592 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,601 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 20:38:18,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:18,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:18,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:18,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:18,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:18,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:18,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,611 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,622 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 20:38:18,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:18,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:18,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:18,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:18,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:18,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:18,626 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,629 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:18,632 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:18,632 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:18,638 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:18,638 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:18,638 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:18,638 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 20:38:18,648 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:18,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:18,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:18,686 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:18,687 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:18,702 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 20:38:18,703 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 20:38:18,703 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 20:38:18,709 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2019-11-28 20:38:18,710 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 20:38:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-28 20:38:18,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-28 20:38:18,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:18,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-28 20:38:18,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:18,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-28 20:38:18,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:18,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-28 20:38:18,712 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:18,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-28 20:38:18,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:38:18,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:38:18,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:38:18,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:18,713 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:18,714 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:18,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:18,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:38:18,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:38:18,714 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-28 20:38:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:18,714 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 20:38:18,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:38:18,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 20:38:18,715 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:18,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:38:18,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:38:18,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:38:18,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:38:18,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:18,716 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:18,716 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:18,716 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:18,716 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 20:38:18,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:38:18,716 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:18,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:38:18,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:38:18 BoogieIcfgContainer [2019-11-28 20:38:18,724 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:38:18,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:38:18,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:38:18,726 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:38:18,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:14" (3/4) ... [2019-11-28 20:38:18,731 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:38:18,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:38:18,735 INFO L168 Benchmark]: Toolchain (without parser) took 5270.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 957.7 MB in the beginning and 882.7 MB in the end (delta: 75.0 MB). Peak memory consumption was 262.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:18,737 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:18,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -128.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:18,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:18,748 INFO L168 Benchmark]: Boogie Preprocessor took 34.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:18,749 INFO L168 Benchmark]: RCFGBuilder took 509.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:18,751 INFO L168 Benchmark]: BuchiAutomizer took 4268.70 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 90.2 MB). Free memory was 1.0 GB in the beginning and 882.7 MB in the end (delta: 165.2 MB). Peak memory consumption was 255.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:18,752 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 1.2 GB. Free memory is still 882.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:18,756 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 397.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -128.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 509.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4268.70 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 90.2 MB). Free memory was 1.0 GB in the beginning and 882.7 MB in the end (delta: 165.2 MB). Peak memory consumption was 255.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.32 ms. Allocated memory is still 1.2 GB. Free memory is still 882.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...