./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 b3b8bf9cef197469aec7ea347f740588dd59c933 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:45:42,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:45:42,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:45:42,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:45:42,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:45:42,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:45:42,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:45:42,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:45:42,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:45:42,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:45:42,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:45:42,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:45:42,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:45:42,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:45:42,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:45:42,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:45:42,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:45:42,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:45:42,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:45:42,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:45:42,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:45:42,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:45:42,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:45:42,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:45:42,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:45:42,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:45:42,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:45:42,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:45:42,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:45:42,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:45:42,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:45:42,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:45:42,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:45:42,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:45:42,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:45:42,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:45:42,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:45:42,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:45:42,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:45:42,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:45:42,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:45:42,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 06:45:43,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:45:43,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:45:43,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:45:43,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:45:43,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:45:43,038 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:45:43,039 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:45:43,039 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:45:43,039 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:45:43,039 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:45:43,040 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:45:43,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:45:43,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:45:43,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:45:43,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:45:43,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:45:43,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:45:43,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:45:43,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:45:43,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:45:43,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:45:43,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:45:43,043 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:45:43,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:45:43,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:45:43,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:45:43,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:45:43,044 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:45:43,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:45:43,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:45:43,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:45:43,045 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:45:43,046 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:45:43,047 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 -> b3b8bf9cef197469aec7ea347f740588dd59c933 [2020-10-20 06:45:43,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:45:43,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:45:43,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:45:43,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:45:43,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:45:43,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-10-20 06:45:43,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e7bbd9d/d5013c04d42342a6bc214957fa6a306e/FLAG220b348eb [2020-10-20 06:45:43,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:45:43,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-10-20 06:45:43,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e7bbd9d/d5013c04d42342a6bc214957fa6a306e/FLAG220b348eb [2020-10-20 06:45:44,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e7bbd9d/d5013c04d42342a6bc214957fa6a306e [2020-10-20 06:45:44,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:45:44,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:45:44,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:45:44,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:45:44,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:45:44,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d14d0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44, skipping insertion in model container [2020-10-20 06:45:44,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:45:44,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:45:44,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:45:44,526 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:45:44,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:45:44,590 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:45:44,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44 WrapperNode [2020-10-20 06:45:44,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:45:44,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:45:44,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:45:44,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:45:44,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:45:44,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:45:44,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:45:44,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:45:44,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (1/1) ... [2020-10-20 06:45:44,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:45:44,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:45:44,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:45:44,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:45:44,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (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 [2020-10-20 06:45:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:45:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:45:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:45:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:45:45,350 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:45:45,351 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 06:45:45,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:45 BoogieIcfgContainer [2020-10-20 06:45:45,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:45:45,354 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:45:45,354 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:45:45,358 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:45:45,359 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:45,359 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:45:44" (1/3) ... [2020-10-20 06:45:45,361 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47d7b466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:45:45, skipping insertion in model container [2020-10-20 06:45:45,361 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:45,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:44" (2/3) ... [2020-10-20 06:45:45,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47d7b466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:45:45, skipping insertion in model container [2020-10-20 06:45:45,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:45,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:45" (3/3) ... [2020-10-20 06:45:45,364 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2020-10-20 06:45:45,406 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:45:45,406 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:45:45,406 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:45:45,406 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:45:45,407 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:45:45,407 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:45:45,407 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:45:45,407 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:45:45,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-10-20 06:45:45,458 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-20 06:45:45,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:45,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:45,466 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:45:45,466 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:45,466 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:45:45,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-10-20 06:45:45,480 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-20 06:45:45,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:45,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:45,481 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:45:45,481 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:45,489 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 12#L21true assume !(0 == base2flt_~m % 4294967296); 37#L27true assume !(base2flt_~m % 4294967296 < 16777216); 32#L49-2true [2020-10-20 06:45:45,490 INFO L796 eck$LassoCheckResult]: Loop: 32#L49-2true assume !false; 59#L50true assume base2flt_~m % 4294967296 >= 33554432; 8#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 32#L49-2true [2020-10-20 06:45:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:45,496 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-20 06:45:45,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:45,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074116024] [2020-10-20 06:45:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:45,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074116024] [2020-10-20 06:45:45,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:45,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:45:45,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916958710] [2020-10-20 06:45:45,706 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:45,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:45,707 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-20 06:45:45,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:45,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436531348] [2020-10-20 06:45:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:45,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:45,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:45,751 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:45,795 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:45,796 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:45,796 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:45,796 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:45,796 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:45,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:45,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:45,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:45,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-10-20 06:45:45,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:45,798 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:45,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:45,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:45,983 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:45,985 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) [2020-10-20 06:45:45,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:45,997 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 [2020-10-20 06:45:46,035 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:46,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:46,045 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:46,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:46,112 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:46,114 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:46,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:46,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:46,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:46,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:46,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,115 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:46,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:46,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-10-20 06:45:46,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:46,115 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:46,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,227 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:46,233 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) [2020-10-20 06:45:46,252 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 [2020-10-20 06:45:46,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:46,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:46,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:46,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:46,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:46,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:46,260 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,265 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 [2020-10-20 06:45:46,303 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 [2020-10-20 06:45:46,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:46,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:46,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:46,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:46,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:46,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:46,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:46,310 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:46,314 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:46,315 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:46,331 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:46,332 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:46,332 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:46,333 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,357 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:46,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:46,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:46,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:46,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:46,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:46,485 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 [2020-10-20 06:45:46,487 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states. Second operand 3 states. [2020-10-20 06:45:46,575 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 71 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2020-10-20 06:45:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2020-10-20 06:45:46,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:45:46,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:46,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:46,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:46,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:45:46,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:46,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2020-10-20 06:45:46,598 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-10-20 06:45:46,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 79 states and 120 transitions. [2020-10-20 06:45:46,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-10-20 06:45:46,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-20 06:45:46,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-10-20 06:45:46,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:46,610 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-10-20 06:45:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-10-20 06:45:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-20 06:45:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:45:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-10-20 06:45:46,650 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-10-20 06:45:46,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:46,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:46,656 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-10-20 06:45:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:46,740 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-10-20 06:45:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:46,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-10-20 06:45:46,743 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-20 06:45:46,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-10-20 06:45:46,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-20 06:45:46,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-20 06:45:46,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-10-20 06:45:46,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:46,745 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-20 06:45:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-10-20 06:45:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-20 06:45:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:45:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-20 06:45:46,772 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-20 06:45:46,773 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-20 06:45:46,773 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:45:46,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-10-20 06:45:46,774 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-20 06:45:46,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:46,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:46,775 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:46,775 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:46,776 INFO L794 eck$LassoCheckResult]: Stem: 455#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 435#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 436#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 432#L71 base2flt_#res := base2flt_~__retres4~0; 433#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 454#L21-1 assume !(0 == base2flt_~m % 4294967296); 421#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L49-5 [2020-10-20 06:45:46,776 INFO L796 eck$LassoCheckResult]: Loop: 422#L49-5 assume !false; 439#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 434#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L49-5 [2020-10-20 06:45:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-20 06:45:46,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:46,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002278612] [2020-10-20 06:45:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:46,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002278612] [2020-10-20 06:45:46,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:46,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:45:46,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377938883] [2020-10-20 06:45:46,831 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-20 06:45:46,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:46,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564403054] [2020-10-20 06:45:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:46,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:46,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:46,848 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:46,872 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:46,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:46,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:46,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:46,872 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:46,872 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:46,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:46,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-10-20 06:45:46,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:46,873 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:46,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:46,968 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:46,968 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:46,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:46,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:47,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:47,019 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) [2020-10-20 06:45:47,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:47,047 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:47,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:47,093 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 [2020-10-20 06:45:47,137 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:47,140 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:47,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:47,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:47,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:47,141 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:47,141 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,141 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:47,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:47,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-10-20 06:45:47,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:47,142 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:47,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,236 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:47,236 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,242 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 [2020-10-20 06:45:47,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:47,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:47,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:47,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:47,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:47,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:47,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:47,251 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) [2020-10-20 06:45:47,295 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 [2020-10-20 06:45:47,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:47,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:47,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:47,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:47,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:47,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:47,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,303 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:47,307 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:47,307 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,316 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:47,316 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:47,316 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:47,316 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-20 06:45:47,348 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:47,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:47,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:47,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:47,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:47,435 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 [2020-10-20 06:45:47,435 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-10-20 06:45:47,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 63 states and 85 transitions. Complement of second has 5 states. [2020-10-20 06:45:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-10-20 06:45:47,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:47,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:47,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:47,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:47,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:45:47,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:47,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-20 06:45:47,462 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-20 06:45:47,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-10-20 06:45:47,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-10-20 06:45:47,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-20 06:45:47,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-10-20 06:45:47,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:47,465 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-10-20 06:45:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-10-20 06:45:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-20 06:45:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:45:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-20 06:45:47,469 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-20 06:45:47,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:47,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:47,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:47,470 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-10-20 06:45:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:47,525 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-10-20 06:45:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:47,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-10-20 06:45:47,527 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:47,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-10-20 06:45:47,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-20 06:45:47,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-20 06:45:47,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-20 06:45:47,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:47,529 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-20 06:45:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-20 06:45:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-20 06:45:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:45:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-10-20 06:45:47,532 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-20 06:45:47,532 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-20 06:45:47,533 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:45:47,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-10-20 06:45:47,533 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:47,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:47,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:47,534 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:47,535 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:47,535 INFO L794 eck$LassoCheckResult]: Stem: 673#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 654#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 652#L71 base2flt_#res := base2flt_~__retres4~0; 653#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 672#L21-1 assume !(0 == base2flt_~m % 4294967296); 642#L27-1 assume base2flt_~m % 4294967296 < 16777216; 643#L39-3 [2020-10-20 06:45:47,535 INFO L796 eck$LassoCheckResult]: Loop: 643#L39-3 assume !false; 671#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 663#L39-2 assume base2flt_~m % 4294967296 < 16777216; 643#L39-3 [2020-10-20 06:45:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-20 06:45:47,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449226424] [2020-10-20 06:45:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,581 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-20 06:45:47,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539947292] [2020-10-20 06:45:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,603 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-20 06:45:47,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:47,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132031512] [2020-10-20 06:45:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:47,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:47,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:47,715 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:47,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:47,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:47,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:47,715 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:47,716 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,716 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:47,716 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:47,717 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-10-20 06:45:47,717 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:47,717 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:47,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,820 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:47,820 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:47,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:47,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:47,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:47,864 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:47,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:47,936 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:47,937 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:47,938 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:47,938 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:47,938 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:47,938 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:47,938 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:47,938 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:47,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:47,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-10-20 06:45:47,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:47,939 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:47,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:47,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,008 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:48,008 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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,020 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 [2020-10-20 06:45:48,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:48,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:48,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:48,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:48,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:48,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:48,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:48,040 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,065 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 [2020-10-20 06:45:48,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:48,067 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:48,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:48,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:48,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:48,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:48,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:48,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:48,075 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:48,075 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,083 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:48,083 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:48,083 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:48,083 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-20 06:45:48,108 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:48,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:48,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:48,196 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 [2020-10-20 06:45:48,196 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-20 06:45:48,207 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 39 states and 50 transitions. Complement of second has 5 states. [2020-10-20 06:45:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-20 06:45:48,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:48,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:48,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:45:48,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-10-20 06:45:48,210 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:48,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-10-20 06:45:48,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-10-20 06:45:48,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-10-20 06:45:48,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-20 06:45:48,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:48,212 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-20 06:45:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-20 06:45:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-20 06:45:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:45:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-20 06:45:48,215 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 06:45:48,215 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 06:45:48,215 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:45:48,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-20 06:45:48,216 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:48,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:48,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:48,217 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:48,217 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:48,217 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 776#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 777#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 774#L71 base2flt_#res := base2flt_~__retres4~0; 775#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 797#L21-1 assume !(0 == base2flt_~m % 4294967296); 764#L27-1 assume base2flt_~m % 4294967296 < 16777216; 765#L39-3 assume !false; 795#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 770#L71-1 base2flt_#res := base2flt_~__retres4~0; 771#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 794#L21-2 assume !(0 == base2flt_~m % 4294967296); 782#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 773#L49-8 [2020-10-20 06:45:48,218 INFO L796 eck$LassoCheckResult]: Loop: 773#L49-8 assume !false; 788#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 772#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 773#L49-8 [2020-10-20 06:45:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-10-20 06:45:48,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084266520] [2020-10-20 06:45:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:48,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084266520] [2020-10-20 06:45:48,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:48,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:45:48,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835407766] [2020-10-20 06:45:48,249 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-20 06:45:48,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721032985] [2020-10-20 06:45:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,263 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:48,290 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:48,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:48,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:48,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:48,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:48,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:48,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:48,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-10-20 06:45:48,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:48,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:48,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:48,423 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) [2020-10-20 06:45:48,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:48,442 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 [2020-10-20 06:45:48,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:48,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:48,509 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:48,511 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:48,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:48,511 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:48,511 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:48,511 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:48,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:48,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:48,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-10-20 06:45:48,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:48,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:48,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,601 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:48,601 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) [2020-10-20 06:45:48,611 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 [2020-10-20 06:45:48,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:48,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:48,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:48,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:48,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:48,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:48,614 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 [2020-10-20 06:45:48,616 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:48,618 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:48,619 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) [2020-10-20 06:45:48,622 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:48,622 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:48,623 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:48,623 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,655 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:48,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:48,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:48,711 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 [2020-10-20 06:45:48,711 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-10-20 06:45:48,732 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2020-10-20 06:45:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-10-20 06:45:48,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 06:45:48,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-20 06:45:48,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 06:45:48,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:48,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-10-20 06:45:48,738 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:48,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-10-20 06:45:48,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-20 06:45:48,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-10-20 06:45:48,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-20 06:45:48,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:48,742 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-20 06:45:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-20 06:45:48,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-20 06:45:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:45:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-20 06:45:48,747 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-20 06:45:48,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:48,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:48,748 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-10-20 06:45:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:48,783 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-20 06:45:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:48,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-10-20 06:45:48,785 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:45:48,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-10-20 06:45:48,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-10-20 06:45:48,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-10-20 06:45:48,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-10-20 06:45:48,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:48,788 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-20 06:45:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-10-20 06:45:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-20 06:45:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:45:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-20 06:45:48,791 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-20 06:45:48,791 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-20 06:45:48,792 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:45:48,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-10-20 06:45:48,795 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:45:48,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:48,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:48,796 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:48,796 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:48,797 INFO L794 eck$LassoCheckResult]: Stem: 1033#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1010#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1007#L71 base2flt_#res := base2flt_~__retres4~0; 1008#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 1032#L21-1 assume !(0 == base2flt_~m % 4294967296); 996#L27-1 assume base2flt_~m % 4294967296 < 16777216; 997#L39-3 assume !false; 1031#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1019#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1012#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1002#L71-1 base2flt_#res := base2flt_~__retres4~0; 1003#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 1029#L21-2 assume !(0 == base2flt_~m % 4294967296); 1015#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-10-20 06:45:48,797 INFO L796 eck$LassoCheckResult]: Loop: 1017#L39-5 assume !false; 1027#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1028#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-10-20 06:45:48,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-10-20 06:45:48,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256196185] [2020-10-20 06:45:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:48,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256196185] [2020-10-20 06:45:48,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:48,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:45:48,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860785549] [2020-10-20 06:45:48,893 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:48,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:48,893 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-20 06:45:48,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:48,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878867276] [2020-10-20 06:45:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:48,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:48,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:48,933 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:48,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:48,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:48,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:48,933 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:48,933 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:48,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:48,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:48,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-10-20 06:45:48,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:48,934 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:48,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:48,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,020 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,020 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) [2020-10-20 06:45:49,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:49,029 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 [2020-10-20 06:45:49,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:49,072 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) [2020-10-20 06:45:49,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:49,077 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) [2020-10-20 06:45:49,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:49,115 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 [2020-10-20 06:45:49,152 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:49,154 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:49,155 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:49,155 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:49,155 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:49,155 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:49,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:49,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:49,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-10-20 06:45:49,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:49,156 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:49,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,224 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,224 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) [2020-10-20 06:45:49,233 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 [2020-10-20 06:45:49,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:49,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:49,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:49,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:49,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:49,237 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:49,237 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 [2020-10-20 06:45:49,244 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) [2020-10-20 06:45:49,281 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:49,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:49,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:49,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:49,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:49,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:49,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:49,286 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:49,290 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:49,291 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) [2020-10-20 06:45:49,299 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:49,299 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:49,300 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:49,300 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:49,384 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 [2020-10-20 06:45:49,384 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-20 06:45:49,396 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 56 states and 69 transitions. Complement of second has 5 states. [2020-10-20 06:45:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-10-20 06:45:49,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-20 06:45:49,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-20 06:45:49,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-20 06:45:49,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:49,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-10-20 06:45:49,415 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:49,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-10-20 06:45:49,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-20 06:45:49,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-10-20 06:45:49,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-10-20 06:45:49,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:49,417 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-20 06:45:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-10-20 06:45:49,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-20 06:45:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 06:45:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-20 06:45:49,419 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-20 06:45:49,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:49,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:45:49,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:45:49,420 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-10-20 06:45:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:49,487 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-20 06:45:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:45:49,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-10-20 06:45:49,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:45:49,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-10-20 06:45:49,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-20 06:45:49,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-20 06:45:49,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-20 06:45:49,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:49,489 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-20 06:45:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-20 06:45:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-20 06:45:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 06:45:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-20 06:45:49,492 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-20 06:45:49,492 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-20 06:45:49,492 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:45:49,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-10-20 06:45:49,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:45:49,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:49,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:49,493 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:49,493 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:49,494 INFO L794 eck$LassoCheckResult]: Stem: 1293#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1268#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 1269#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1266#L71 base2flt_#res := base2flt_~__retres4~0; 1267#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 1292#L21-1 assume !(0 == base2flt_~m % 4294967296); 1255#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1256#L39-3 assume !false; 1291#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1278#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1280#L39-3 assume !false; 1290#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1261#L71-1 base2flt_#res := base2flt_~__retres4~0; 1262#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 1289#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1257#L71-2 base2flt_#res := base2flt_~__retres4~0; 1258#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;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; 1285#L21-3 assume !(0 == base2flt_~m % 4294967296); 1272#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1260#L49-11 [2020-10-20 06:45:49,494 INFO L796 eck$LassoCheckResult]: Loop: 1260#L49-11 assume !false; 1277#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1259#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1260#L49-11 [2020-10-20 06:45:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,494 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-10-20 06:45:49,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:49,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433823955] [2020-10-20 06:45:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:49,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433823955] [2020-10-20 06:45:49,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531446773] [2020-10-20 06:45:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:45:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:49,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:45:49,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 06:45:49,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79591071] [2020-10-20 06:45:49,613 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-10-20 06:45:49,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:49,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141884375] [2020-10-20 06:45:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:49,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:49,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:49,645 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:49,646 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:49,646 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:49,646 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:49,646 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:49,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:49,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:49,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-10-20 06:45:49,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:49,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:49,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,751 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,751 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:45:49,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:49,755 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 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) [2020-10-20 06:45:49,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:49,793 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,819 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:49,820 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:49,821 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:49,821 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:49,821 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:49,821 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:49,821 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,821 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:49,821 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:49,821 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-10-20 06:45:49,821 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:49,821 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:49,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:49,904 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:49,904 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:45:49,912 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 [2020-10-20 06:45:49,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:49,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:49,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:49,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:49,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:49,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:49,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:49,925 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:49,925 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:49,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:49,934 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:49,934 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:49,934 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:49,962 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:49,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:49,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:49,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:50,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:50,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:50,006 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 [2020-10-20 06:45:50,006 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-10-20 06:45:50,012 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 46 states and 59 transitions. Complement of second has 4 states. [2020-10-20 06:45:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-10-20 06:45:50,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-20 06:45:50,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:50,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-20 06:45:50,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:50,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-20 06:45:50,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:50,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-20 06:45:50,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:50,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-10-20 06:45:50,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-10-20 06:45:50,026 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-20 06:45:50,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-20 06:45:50,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:50,026 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-20 06:45:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-20 06:45:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-20 06:45:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:45:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-20 06:45:50,029 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-20 06:45:50,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:50,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:45:50,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:45:50,030 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-10-20 06:45:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:50,053 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-20 06:45:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:45:50,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-10-20 06:45:50,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:50,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-10-20 06:45:50,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-10-20 06:45:50,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-10-20 06:45:50,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-20 06:45:50,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:50,055 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-20 06:45:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-20 06:45:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-20 06:45:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:45:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-20 06:45:50,058 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-20 06:45:50,058 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-20 06:45:50,058 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:45:50,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-10-20 06:45:50,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:50,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:50,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:50,060 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:50,060 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:50,060 INFO L794 eck$LassoCheckResult]: Stem: 1604#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1582#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, 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~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;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; 1583#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1579#L71 base2flt_#res := base2flt_~__retres4~0; 1580#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;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; 1603#L21-1 assume !(0 == base2flt_~m % 4294967296); 1570#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1571#L39-3 assume !false; 1602#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1590#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1591#L39-3 assume !false; 1607#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1609#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1584#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1574#L71-1 base2flt_#res := base2flt_~__retres4~0; 1575#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;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; 1600#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1572#L71-2 base2flt_#res := base2flt_~__retres4~0; 1573#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;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; 1596#L21-3 assume !(0 == base2flt_~m % 4294967296); 1585#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1586#L39-7 [2020-10-20 06:45:50,060 INFO L796 eck$LassoCheckResult]: Loop: 1586#L39-7 assume !false; 1594#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1595#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1586#L39-7 [2020-10-20 06:45:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-10-20 06:45:50,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:50,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101594162] [2020-10-20 06:45:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:50,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101594162] [2020-10-20 06:45:50,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363283012] [2020-10-20 06:45:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:45:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:50,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:45:50,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:50,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:45:50,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 06:45:50,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533404908] [2020-10-20 06:45:50,245 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-10-20 06:45:50,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:50,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429423185] [2020-10-20 06:45:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:50,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:50,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:50,253 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:50,272 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:50,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:50,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:50,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:50,272 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:50,272 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:50,272 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:50,273 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:50,273 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-10-20 06:45:50,273 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:50,273 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:50,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:50,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:50,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:50,355 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:45:50,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:50,358 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 [2020-10-20 06:45:50,395 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:50,395 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:50,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:50,400 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 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) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:50,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:50,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:50,450 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:50,451 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:50,452 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:50,452 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:50,452 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:50,452 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:50,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:50,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:50,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:50,452 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-10-20 06:45:50,452 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:50,452 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:50,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:50,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:50,518 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:50,518 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:50,521 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 [2020-10-20 06:45:50,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:50,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:50,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:50,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:50,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:50,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:50,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:50,526 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:50,547 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 [2020-10-20 06:45:50,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:50,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:50,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:50,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:50,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:50,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:50,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:50,556 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:50,559 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:50,559 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:50,567 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:50,567 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:50,567 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:50,567 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:50,597 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:50,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:50,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:50,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:50,662 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 [2020-10-20 06:45:50,663 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-20 06:45:50,667 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 4 states. [2020-10-20 06:45:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:45:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-10-20 06:45:50,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-20 06:45:50,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:50,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-20 06:45:50,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:50,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-20 06:45:50,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:50,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-20 06:45:50,670 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:50,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-10-20 06:45:50,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:45:50,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:45:50,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:45:50,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:50,671 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:50,671 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:50,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:50,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:45:50,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:45:50,671 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-20 06:45:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:50,671 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 06:45:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:45:50,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 06:45:50,672 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:50,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:45:50,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:45:50,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:45:50,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:45:50,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:50,673 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:50,673 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:50,673 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:50,673 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 06:45:50,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:45:50,673 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:50,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:45:50,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:45:50 BoogieIcfgContainer [2020-10-20 06:45:50,680 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:45:50,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:45:50,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:45:50,680 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:45:50,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:45" (3/4) ... [2020-10-20 06:45:50,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:45:50,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:45:50,686 INFO L168 Benchmark]: Toolchain (without parser) took 6503.29 ms. Allocated memory was 34.6 MB in the beginning and 70.3 MB in the end (delta: 35.7 MB). Free memory was 16.1 MB in the beginning and 9.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 42.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,687 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 33.6 MB. Free memory was 10.4 MB in the beginning and 10.3 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.96 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 22.1 MB in the end (delta: -6.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.49 ms. Allocated memory is still 43.0 MB. Free memory was 22.1 MB in the beginning and 19.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,689 INFO L168 Benchmark]: Boogie Preprocessor took 55.67 ms. Allocated memory is still 43.0 MB. Free memory was 19.7 MB in the beginning and 17.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,690 INFO L168 Benchmark]: RCFGBuilder took 651.03 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 17.5 MB in the end (delta: 281.6 kB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,691 INFO L168 Benchmark]: BuchiAutomizer took 5325.97 ms. Allocated memory was 45.1 MB in the beginning and 70.3 MB in the end (delta: 25.2 MB). Free memory was 17.2 MB in the beginning and 10.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 32.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,691 INFO L168 Benchmark]: Witness Printer took 4.04 ms. Allocated memory is still 70.3 MB. Free memory was 10.4 MB in the beginning and 9.6 MB in the end (delta: 789.5 kB). Peak memory consumption was 789.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:45:50,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 33.6 MB. Free memory was 10.4 MB in the beginning and 10.3 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 401.96 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 22.1 MB in the end (delta: -6.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.49 ms. Allocated memory is still 43.0 MB. Free memory was 22.1 MB in the beginning and 19.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 55.67 ms. Allocated memory is still 43.0 MB. Free memory was 19.7 MB in the beginning and 17.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 651.03 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 17.5 MB in the end (delta: 281.6 kB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 5325.97 ms. Allocated memory was 45.1 MB in the beginning and 70.3 MB in the end (delta: 25.2 MB). Free memory was 17.2 MB in the beginning and 10.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 32.0 MB. Max. memory is 14.3 GB. * Witness Printer took 4.04 ms. Allocated memory is still 70.3 MB. Free memory was 10.4 MB in the beginning and 9.6 MB in the end (delta: 789.5 kB). Peak memory consumption was 789.5 kB. Max. memory is 14.3 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 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 527 SDtfs, 344 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 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: 30ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...