./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_3a.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_3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cac40a9ba224163bfdf0833231d07bf58d2881f1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:38:10,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:38:10,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:38:10,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:38:10,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:38:10,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:38:10,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:38:10,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:38:10,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:38:10,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:38:10,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:38:10,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:38:10,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:38:10,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:38:10,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:38:10,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:38:10,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:38:10,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:38:10,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:38:10,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:38:10,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:38:10,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:38:10,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:38:10,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:38:10,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:38:10,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:38:10,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:38:10,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:38:10,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:38:10,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:38:10,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:38:11,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:38:11,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:38:11,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:38:11,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:38:11,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:38:11,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:38:11,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:38:11,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:38:11,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:38:11,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:38:11,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:38:11,049 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:38:11,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:38:11,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:38:11,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:38:11,051 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:38:11,051 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:38:11,052 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:38:11,052 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:38:11,052 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:38:11,052 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:38:11,053 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:38:11,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:38:11,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:38:11,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:38:11,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:38:11,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:38:11,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:38:11,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:38:11,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:38:11,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:38:11,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:38:11,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:38:11,056 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:38:11,056 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:38:11,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:38:11,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:38:11,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:38:11,057 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:38:11,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:38:11,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:38:11,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:38:11,058 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:38:11,059 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:38:11,060 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 -> cac40a9ba224163bfdf0833231d07bf58d2881f1 [2019-11-28 20:38:11,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:38:11,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:38:11,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:38:11,431 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:38:11,431 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:38:11,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-11-28 20:38:11,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa5ff588/f7cbe076546545938711a256685949c9/FLAG9e1366333 [2019-11-28 20:38:11,953 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:38:11,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-11-28 20:38:11,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa5ff588/f7cbe076546545938711a256685949c9/FLAG9e1366333 [2019-11-28 20:38:12,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa5ff588/f7cbe076546545938711a256685949c9 [2019-11-28 20:38:12,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:38:12,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:38:12,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:38:12,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:38:12,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:38:12,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79eb6408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12, skipping insertion in model container [2019-11-28 20:38:12,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:38:12,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:38:12,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:38:12,654 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:38:12,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:38:12,793 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:38:12,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12 WrapperNode [2019-11-28 20:38:12,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:38:12,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:38:12,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:38:12,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:38:12,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:38:12,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:38:12,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:38:12,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:38:12,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (1/1) ... [2019-11-28 20:38:12,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:38:12,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:38:12,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:38:12,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:38:12,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (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 20:38:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:38:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:38:13,409 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:38:13,409 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 20:38:13,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:13 BoogieIcfgContainer [2019-11-28 20:38:13,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:38:13,411 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:38:13,411 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:38:13,416 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:38:13,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:13,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:38:12" (1/3) ... [2019-11-28 20:38:13,418 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c954cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:38:13, skipping insertion in model container [2019-11-28 20:38:13,418 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:13,419 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:12" (2/3) ... [2019-11-28 20:38:13,419 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c954cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:38:13, skipping insertion in model container [2019-11-28 20:38:13,419 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:38:13,419 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:13" (3/3) ... [2019-11-28 20:38:13,423 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2019-11-28 20:38:13,472 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:38:13,472 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:38:13,472 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:38:13,472 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:38:13,473 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:38:13,474 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:38:13,474 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:38:13,474 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:38:13,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-11-28 20:38:13,513 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 20:38:13,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:13,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:13,521 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:38:13,521 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:13,521 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:38:13,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-11-28 20:38:13,527 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 20:38:13,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:13,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:13,528 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:38:13,528 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:13,536 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 35#L19true assume !(0 == base2flt_~m % 4294967296); 23#L25true assume !(base2flt_~m % 4294967296 < 16777216); 17#L47-2true [2019-11-28 20:38:13,537 INFO L796 eck$LassoCheckResult]: Loop: 17#L47-2true assume !false; 28#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 17#L47-2true [2019-11-28 20:38:13,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:13,542 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-28 20:38:13,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:13,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163276798] [2019-11-28 20:38:13,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:13,711 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 20:38:13,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163276798] [2019-11-28 20:38:13,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:13,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:38:13,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748269219] [2019-11-28 20:38:13,723 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:13,724 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-28 20:38:13,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:13,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793669472] [2019-11-28 20:38:13,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:13,780 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:13,845 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:13,846 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:13,846 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:13,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:13,847 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:13,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:13,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:13,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:13,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-11-28 20:38:13,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:13,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:13,874 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 20:38:13,900 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 20:38:14,048 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:14,048 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 20:38:14,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:14,057 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 20:38:14,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:14,071 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 20:38:14,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:14,085 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:14,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:38:14,115 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:14,118 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:14,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:14,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:14,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:14,119 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:14,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:14,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:14,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-11-28 20:38:14,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:14,121 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:14,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:14,131 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 20:38:14,245 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:14,250 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,265 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 20:38:14,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:14,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:14,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:14,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:14,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:14,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:14,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:14,278 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 20:38:14,291 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 20:38:14,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:14,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:14,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:14,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:14,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:14,296 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:14,296 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:14,299 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:14,303 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:14,304 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 20:38:14,320 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:14,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:14,321 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:14,323 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 20:38:14,331 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:14,379 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:14,381 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:14,395 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:14,396 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:14,398 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 20:38:14,426 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 20:38:14,427 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states. Second operand 3 states. [2019-11-28 20:38:14,527 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states.. Second operand 3 states. Result 200 states and 340 transitions. Complement of second has 6 states. [2019-11-28 20:38:14,529 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 20:38:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2019-11-28 20:38:14,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 20:38:14,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:14,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:14,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:14,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 20:38:14,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:14,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 340 transitions. [2019-11-28 20:38:14,550 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-28 20:38:14,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 78 states and 119 transitions. [2019-11-28 20:38:14,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-28 20:38:14,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-28 20:38:14,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-28 20:38:14,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:14,560 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-28 20:38:14,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-28 20:38:14,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-28 20:38:14,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 20:38:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-28 20:38:14,592 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-28 20:38:14,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:14,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:14,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:14,596 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-28 20:38:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:14,670 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-28 20:38:14,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:14,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-28 20:38:14,672 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 20:38:14,673 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-28 20:38:14,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 20:38:14,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 20:38:14,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-28 20:38:14,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:14,674 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 20:38:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-28 20:38:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 20:38:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:38:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-28 20:38:14,678 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 20:38:14,678 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-28 20:38:14,678 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:38:14,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-28 20:38:14,679 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-28 20:38:14,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:14,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:14,680 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:38:14,680 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:14,681 INFO L794 eck$LassoCheckResult]: Stem: 443#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; 441#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 414#L69 base2flt_#res := base2flt_~__retres4~0; 415#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; 438#L19-1 assume !(0 == base2flt_~m % 4294967296); 426#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 418#L47-5 [2019-11-28 20:38:14,681 INFO L796 eck$LassoCheckResult]: Loop: 418#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 416#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 418#L47-5 [2019-11-28 20:38:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,681 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-28 20:38:14,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823587422] [2019-11-28 20:38:14,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:14,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823587422] [2019-11-28 20:38:14,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:14,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:38:14,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946999220] [2019-11-28 20:38:14,742 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:14,743 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-28 20:38:14,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:14,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689195400] [2019-11-28 20:38:14,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:14,769 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:14,794 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:14,794 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:14,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:14,795 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:14,795 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:14,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:14,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:14,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-11-28 20:38:14,796 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:14,796 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:14,797 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 20:38:14,807 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 20:38:14,905 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:14,906 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 20:38:14,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:14,915 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 20:38:14,922 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:14,923 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:14,936 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:14,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:14,953 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 20:38:14,964 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:14,969 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:14,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:14,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:14,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:14,969 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:14,969 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:14,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:14,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:14,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-11-28 20:38:14,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:14,970 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:14,972 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 20:38:14,982 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 20:38:15,085 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,085 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 20:38:15,098 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 20:38:15,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,107 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 20:38:15,123 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:38:15,130 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:15,133 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:15,133 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 20:38:15,146 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:15,147 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:15,147 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:15,147 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 20:38:15,149 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,179 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,180 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,185 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,185 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,186 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 20:38:15,186 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 20:38:15,187 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-28 20:38:15,204 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 20:38:15,207 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 20:38:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-28 20:38:15,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:15,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:15,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 20:38:15,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-28 20:38:15,210 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-28 20:38:15,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-28 20:38:15,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-28 20:38:15,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-28 20:38:15,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-28 20:38:15,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:15,212 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-28 20:38:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-28 20:38:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-28 20:38:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-28 20:38:15,216 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-28 20:38:15,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:15,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:15,217 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-28 20:38:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:15,285 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-28 20:38:15,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:15,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-28 20:38:15,287 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:15,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-28 20:38:15,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-28 20:38:15,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-28 20:38:15,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-28 20:38:15,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:15,289 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-28 20:38:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-28 20:38:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-28 20:38:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 20:38:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-28 20:38:15,292 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-28 20:38:15,293 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-28 20:38:15,293 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:38:15,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-28 20:38:15,294 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:15,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:15,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:15,295 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:38:15,295 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:15,295 INFO L794 eck$LassoCheckResult]: Stem: 654#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 651#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 628#L69 base2flt_#res := base2flt_~__retres4~0; 629#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 648#L19-1 assume !(0 == base2flt_~m % 4294967296); 636#L25-1 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-11-28 20:38:15,296 INFO L796 eck$LassoCheckResult]: Loop: 637#L37-3 assume !false; 646#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 647#L37-2 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-11-28 20:38:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-28 20:38:15,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223367674] [2019-11-28 20:38:15,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,323 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,324 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-28 20:38:15,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936737530] [2019-11-28 20:38:15,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,344 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-28 20:38:15,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976242832] [2019-11-28 20:38:15,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:15,400 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:15,429 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,429 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,429 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,429 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,429 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:15,430 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,430 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,430 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-11-28 20:38:15,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,430 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,434 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 20:38:15,442 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 20:38:15,511 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,512 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 20:38:15,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,524 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 20:38:15,533 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:15,533 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:15,546 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:15,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:15,574 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,583 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:15,585 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:15,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:15,586 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:15,586 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:15,586 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:15,586 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:15,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:15,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:15,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-11-28 20:38:15,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:15,587 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:15,591 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 20:38:15,600 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 20:38:15,684 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:15,684 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 20:38:15,704 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 20:38:15,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,709 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 20:38:15,713 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 20:38:15,729 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 20:38:15,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:15,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:15,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:15,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:15,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:15,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:15,737 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 20:38:15,741 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:15,744 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:15,744 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 20:38:15,760 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:15,760 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:15,760 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:15,760 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 20:38:15,762 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 20:38:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,794 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,794 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:15,803 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:15,804 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:15,836 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 20:38:15,837 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 20:38:15,837 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 20:38:15,855 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 20:38:15,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:38:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 20:38:15,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:38:15,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:15,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 20:38:15,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:15,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-28 20:38:15,864 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-28 20:38:15,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-28 20:38:15,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-28 20:38:15,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-28 20:38:15,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-28 20:38:15,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:15,870 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-28 20:38:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-28 20:38:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-28 20:38:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 20:38:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-28 20:38:15,879 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-28 20:38:15,879 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-28 20:38:15,879 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:38:15,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-28 20:38:15,880 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:15,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:15,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:15,882 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:15,882 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:15,882 INFO L794 eck$LassoCheckResult]: Stem: 793#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; 790#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 766#L69 base2flt_#res := base2flt_~__retres4~0; 767#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; 787#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L69-1 base2flt_#res := base2flt_~__retres4~0; 779#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; 782#L19-2 assume !(0 == base2flt_~m % 4294967296); 772#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 765#L47-8 [2019-11-28 20:38:15,883 INFO L796 eck$LassoCheckResult]: Loop: 765#L47-8 assume !false; 788#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 763#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 765#L47-8 [2019-11-28 20:38:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-28 20:38:15,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:15,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913874581] [2019-11-28 20:38:15,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:38:16,006 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 20:38:16,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913874581] [2019-11-28 20:38:16,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:16,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:38:16,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825238925] [2019-11-28 20:38:16,007 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,008 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-28 20:38:16,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606300105] [2019-11-28 20:38:16,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,057 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,057 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,057 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,057 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,058 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:16,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-11-28 20:38:16,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,058 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,059 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 20:38:16,067 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 20:38:16,175 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,175 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 20:38:16,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,191 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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:16,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:38:16,222 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:16,224 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,224 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:16,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,225 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,225 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-11-28 20:38:16,225 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,225 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,226 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 20:38:16,234 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 20:38:16,318 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,318 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 20:38:16,329 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 20:38:16,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,333 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 20:38:16,335 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:16,339 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:16,339 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 20:38:16,348 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:16,348 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:16,348 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:16,348 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 20:38:16,351 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,385 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,386 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,393 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,394 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,394 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 20:38:16,395 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 20:38:16,395 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-28 20:38:16,417 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 20:38:16,418 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 20:38:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 20:38:16,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 20:38:16,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 20:38:16,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 20:38:16,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-28 20:38:16,420 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-28 20:38:16,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-28 20:38:16,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 20:38:16,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-28 20:38:16,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-28 20:38:16,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,421 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-28 20:38:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-28 20:38:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-28 20:38:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-28 20:38:16,427 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-28 20:38:16,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:16,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:38:16,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:38:16,428 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-28 20:38:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:16,476 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-28 20:38:16,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:38:16,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-28 20:38:16,477 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:38:16,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-28 20:38:16,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-28 20:38:16,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 20:38:16,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-28 20:38:16,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,481 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-28 20:38:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-28 20:38:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-28 20:38:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-28 20:38:16,486 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-28 20:38:16,486 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-28 20:38:16,486 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:38:16,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-28 20:38:16,486 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-28 20:38:16,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:16,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:16,487 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:38:16,487 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:16,487 INFO L794 eck$LassoCheckResult]: Stem: 1014#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; 1011#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 985#L69 base2flt_#res := base2flt_~__retres4~0; 986#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; 1007#L19-1 assume !(0 == base2flt_~m % 4294967296); 994#L25-1 assume base2flt_~m % 4294967296 < 16777216; 995#L37-3 assume !false; 1004#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 998#L69-1 base2flt_#res := base2flt_~__retres4~0; 999#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; 1002#L19-2 assume !(0 == base2flt_~m % 4294967296); 991#L25-2 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-11-28 20:38:16,488 INFO L796 eck$LassoCheckResult]: Loop: 993#L37-5 assume !false; 1000#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1001#L37-4 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-11-28 20:38:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,488 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-28 20:38:16,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986586940] [2019-11-28 20:38:16,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:38:16,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986586940] [2019-11-28 20:38:16,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:16,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:38:16,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729672018] [2019-11-28 20:38:16,553 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-28 20:38:16,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665977090] [2019-11-28 20:38:16,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:16,568 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:16,591 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,591 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,591 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,591 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,592 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:16,592 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,592 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,592 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,592 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-11-28 20:38:16,592 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,592 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,593 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 20:38:16,599 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 20:38:16,664 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,665 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 20:38:16,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,671 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 20:38:16,681 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:16,681 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 20:38:16,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:16,694 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 20:38:16,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:16,707 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 20:38:16,718 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:16,720 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:16,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:16,721 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:16,721 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:16,721 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:16,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:16,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:16,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:16,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-11-28 20:38:16,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:16,721 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:16,723 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 20:38:16,735 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 20:38:16,803 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:16,804 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 20:38:16,810 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 20:38:16,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,814 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 20:38:16,818 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 20:38:16,826 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 20:38:16,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:16,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:16,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:16,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:16,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:16,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:16,829 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 20:38:16,837 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:16,840 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:16,841 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 20:38:16,851 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:16,851 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:16,852 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:16,852 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 20:38:16,860 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 20:38:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,891 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,892 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:16,897 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:16,898 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:16,911 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 20:38:16,911 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 20:38:16,912 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-28 20:38:16,922 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 20:38:16,922 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 20:38:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-28 20:38:16,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 20:38:16,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-28 20:38:16,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-28 20:38:16,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:16,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-28 20:38:16,925 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-28 20:38:16,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-28 20:38:16,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-28 20:38:16,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-28 20:38:16,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-28 20:38:16,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,926 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-28 20:38:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-28 20:38:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-28 20:38:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 20:38:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-28 20:38:16,929 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-28 20:38:16,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:16,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:38:16,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:38:16,930 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-28 20:38:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:16,987 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-28 20:38:16,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:38:16,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-28 20:38:16,988 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:38:16,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-28 20:38:16,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-28 20:38:16,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-28 20:38:16,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-28 20:38:16,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:16,989 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-28 20:38:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-28 20:38:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-28 20:38:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 20:38:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-28 20:38:16,991 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-28 20:38:16,991 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-28 20:38:16,991 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:38:16,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-28 20:38:16,992 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:38:16,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:16,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:16,993 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 20:38:16,993 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:16,993 INFO L794 eck$LassoCheckResult]: Stem: 1262#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; 1257#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1230#L69 base2flt_#res := base2flt_~__retres4~0; 1231#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; 1253#L19-1 assume !(0 == base2flt_~m % 4294967296); 1239#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1240#L37-3 assume !false; 1251#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1252#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1258#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; 1243#L69-1 base2flt_#res := base2flt_~__retres4~0; 1244#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; 1248#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1227#L69-2 base2flt_#res := base2flt_~__retres4~0; 1241#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; 1249#L19-3 assume !(0 == base2flt_~m % 4294967296); 1234#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1235#L47-11 [2019-11-28 20:38:16,993 INFO L796 eck$LassoCheckResult]: Loop: 1235#L47-11 assume !false; 1264#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1242#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1235#L47-11 [2019-11-28 20:38:16,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:16,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-28 20:38:16,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:16,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534088750] [2019-11-28 20:38:16,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,068 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 20:38:17,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534088750] [2019-11-28 20:38:17,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:38:17,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:38:17,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886241148] [2019-11-28 20:38:17,072 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,072 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-28 20:38:17,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166088647] [2019-11-28 20:38:17,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,089 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:17,112 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,112 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,112 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,113 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:17,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,113 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-11-28 20:38:17,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,113 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,114 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 20:38:17,119 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 20:38:17,186 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,186 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 20:38:17,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,196 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 20:38:17,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:17,206 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 20:38:17,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:17,216 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:17,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-11-28 20:38:17,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,218 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 20:38:17,225 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 20:38:17,300 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,300 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 20:38:17,305 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 20:38:17,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,309 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 20:38:17,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:17,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:17,315 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 20:38:17,321 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:17,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:17,321 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:17,321 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,332 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:38:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,374 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,379 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,380 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,381 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 20:38:17,381 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 20:38:17,381 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-28 20:38:17,389 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 20:38:17,390 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 20:38:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:38:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-28 20:38:17,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-28 20:38:17,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-28 20:38:17,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-28 20:38:17,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-28 20:38:17,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:17,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-28 20:38:17,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-28 20:38:17,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-28 20:38:17,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-28 20:38:17,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:17,394 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 20:38:17,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-28 20:38:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-28 20:38:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:38:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-28 20:38:17,397 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-28 20:38:17,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:17,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:38:17,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:38:17,398 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-28 20:38:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:17,463 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-28 20:38:17,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:38:17,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-28 20:38:17,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:17,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-28 20:38:17,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-28 20:38:17,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-28 20:38:17,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-28 20:38:17,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:38:17,466 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-28 20:38:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-28 20:38:17,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-28 20:38:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 20:38:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-28 20:38:17,468 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-28 20:38:17,468 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-28 20:38:17,468 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 20:38:17,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-28 20:38:17,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:38:17,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:38:17,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:38:17,470 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 20:38:17,470 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:38:17,470 INFO L794 eck$LassoCheckResult]: Stem: 1502#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; 1499#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1474#L69 base2flt_#res := base2flt_~__retres4~0; 1475#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; 1495#L19-1 assume !(0 == base2flt_~m % 4294967296); 1482#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1483#L37-3 assume !false; 1493#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1494#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1505#L37-3 assume !false; 1492#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1485#L69-1 base2flt_#res := base2flt_~__retres4~0; 1486#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; 1490#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1471#L69-2 base2flt_#res := base2flt_~__retres4~0; 1484#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; 1491#L19-3 assume !(0 == base2flt_~m % 4294967296); 1478#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2019-11-28 20:38:17,471 INFO L796 eck$LassoCheckResult]: Loop: 1476#L37-7 assume !false; 1477#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1501#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2019-11-28 20:38:17,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,471 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-28 20:38:17,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539101512] [2019-11-28 20:38:17,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,506 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 20:38:17,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539101512] [2019-11-28 20:38:17,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162932719] [2019-11-28 20:38:17,507 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 20:38:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,552 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,553 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,557 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 20:38:17,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:38:17,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-28 20:38:17,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508229145] [2019-11-28 20:38:17,559 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:38:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-28 20:38:17,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:38:17,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129362894] [2019-11-28 20:38:17,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:38:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:38:17,566 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:38:17,588 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,588 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,588 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,588 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,588 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:38:17,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,589 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-11-28 20:38:17,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:38:17,597 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 20:38:17,649 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,650 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 20:38:17,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,661 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 20:38:17,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:38:17,668 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 20:38:17,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:38:17,675 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 20:38:17,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:38:17,686 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 20:38:17,693 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:38:17,696 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:38:17,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:38:17,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:38:17,696 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:38:17,696 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:38:17,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:38:17,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:38:17,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:38:17,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-11-28 20:38:17,697 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:38:17,697 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:38:17,698 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 20:38:17,706 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 20:38:17,759 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:38:17,760 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 20:38:17,770 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 20:38:17,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,776 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 20:38:17,779 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 20:38:17,789 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 20:38:17,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:38:17,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:38:17,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:38:17,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:38:17,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:38:17,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:38:17,794 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 20:38:17,796 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:38:17,799 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:38:17,799 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:38:17,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:38:17,804 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:38:17,804 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:38:17,805 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 20:38:17,806 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 20:38:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:38:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,869 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,872 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:38:17,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:38:17,879 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:38:17,901 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 20:38:17,901 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 20:38:17,901 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 20:38:17,908 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 20:38:17,911 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 20:38:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:38:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-28 20:38:17,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-28 20:38:17,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-28 20:38:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-28 20:38:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:38:17,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-28 20:38:17,916 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:17,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-28 20:38:17,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:38:17,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:38:17,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:38:17,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:17,916 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,916 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:38:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:38:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:38:17,917 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-28 20:38:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:38:17,917 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 20:38:17,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:38:17,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 20:38:17,918 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:17,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:38:17,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:38:17,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:38:17,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:38:17,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:38:17,919 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,919 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,919 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:38:17,919 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 20:38:17,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:38:17,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:38:17,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:38:17,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:38:17 BoogieIcfgContainer [2019-11-28 20:38:17,927 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:38:17,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:38:17,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:38:17,928 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:38:17,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:13" (3/4) ... [2019-11-28 20:38:17,932 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:38:17,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:38:17,935 INFO L168 Benchmark]: Toolchain (without parser) took 5626.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.0 MB). Free memory was 956.3 MB in the beginning and 905.8 MB in the end (delta: 50.5 MB). Peak memory consumption was 266.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,935 INFO L168 Benchmark]: CDTParser took 0.27 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 20:38:17,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:17,937 INFO L168 Benchmark]: Boogie Preprocessor took 45.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,938 INFO L168 Benchmark]: RCFGBuilder took 513.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,939 INFO L168 Benchmark]: BuchiAutomizer took 4515.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 905.8 MB in the end (delta: 181.1 MB). Peak memory consumption was 262.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:38:17,939 INFO L168 Benchmark]: Witness Printer took 4.32 ms. Allocated memory is still 1.2 GB. Free memory is still 905.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:38:17,943 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 485.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 513.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4515.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 905.8 MB in the end (delta: 181.1 MB). Peak memory consumption was 262.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.32 ms. Allocated memory is still 1.2 GB. Free memory is still 905.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. 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: 541 SDtfs, 372 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: 25ms 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...