./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3b8bf9cef197469aec7ea347f740588dd59c933 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:52:52,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:52:52,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:52:52,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:52:52,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:52:52,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:52:52,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:52:52,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:52:52,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:52:52,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:52:52,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:52:52,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:52:52,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:52:52,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:52:52,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:52:52,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:52:52,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:52:52,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:52:52,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:52:52,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:52:52,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:52:52,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:52:52,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:52:52,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:52:52,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:52:52,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:52:52,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:52:52,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:52:52,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:52:52,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:52:52,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:52:52,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:52:52,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:52:52,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:52:52,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:52:52,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:52:52,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:52:52,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:52:52,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:52:52,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:52:52,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:52:52,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 18:52:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:52:52,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:52:52,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:52:52,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:52:52,370 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:52:52,371 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:52:52,371 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:52:52,371 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:52:52,371 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:52:52,372 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:52:52,372 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:52:52,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:52:52,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:52:52,373 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:52:52,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:52:52,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:52:52,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:52:52,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:52:52,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:52:52,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:52:52,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:52:52,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:52:52,375 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:52:52,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:52:52,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:52:52,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:52:52,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:52:52,377 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:52:52,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:52:52,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:52:52,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:52:52,378 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:52:52,379 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:52:52,379 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 [2020-10-19 18:52:52,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:52:52,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:52:52,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:52:52,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:52:52,780 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:52:52,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-10-19 18:52:52,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0000d3ab/3a5600369dc74aa29758c9bf6e42d972/FLAG7cb0084d0 [2020-10-19 18:52:53,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:52:53,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-10-19 18:52:53,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0000d3ab/3a5600369dc74aa29758c9bf6e42d972/FLAG7cb0084d0 [2020-10-19 18:52:53,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0000d3ab/3a5600369dc74aa29758c9bf6e42d972 [2020-10-19 18:52:53,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:52:53,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:52:53,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:53,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:52:53,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:52:53,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:53" (1/1) ... [2020-10-19 18:52:53,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345db8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:53, skipping insertion in model container [2020-10-19 18:52:53,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:53" (1/1) ... [2020-10-19 18:52:53,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:52:53,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:52:54,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:54,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:52:54,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:54,227 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:52:54,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54 WrapperNode [2020-10-19 18:52:54,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:54,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:54,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:52:54,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:52:54,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:54,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:52:54,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:52:54,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:52:54,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:52:54,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:52:54,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:52:54,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:52:54,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (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 [2020-10-19 18:52:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:52:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:52:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:52:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:52:54,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:52:54,891 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-19 18:52:54,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:54 BoogieIcfgContainer [2020-10-19 18:52:54,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:52:54,894 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:52:54,894 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:52:54,899 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:52:54,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:54,900 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:52:53" (1/3) ... [2020-10-19 18:52:54,901 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cf26660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:54, skipping insertion in model container [2020-10-19 18:52:54,902 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:54,902 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (2/3) ... [2020-10-19 18:52:54,902 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2cf26660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:54, skipping insertion in model container [2020-10-19 18:52:54,903 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:54,903 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:54" (3/3) ... [2020-10-19 18:52:54,908 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2020-10-19 18:52:54,977 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:52:54,978 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:52:54,978 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:52:54,979 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:52:54,979 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:52:54,980 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:52:54,980 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:52:54,980 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:52:55,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-10-19 18:52:55,024 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-19 18:52:55,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:55,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:55,032 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:55,032 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:55,033 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:52:55,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-10-19 18:52:55,039 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-19 18:52:55,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:55,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:55,040 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:55,041 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:55,049 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 12#L21true assume !(0 == base2flt_~m % 4294967296); 37#L27true assume !(base2flt_~m % 4294967296 < 16777216); 32#L49-2true [2020-10-19 18:52:55,050 INFO L796 eck$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 [2020-10-19 18:52:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,058 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-19 18:52:55,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163697856] [2020-10-19 18:52:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163697856] [2020-10-19 18:52:55,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:55,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:55,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213709789] [2020-10-19 18:52:55,279 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,280 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-19 18:52:55,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720883155] [2020-10-19 18:52:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,325 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:55,384 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,386 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:55,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,386 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,386 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,386 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:55,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,387 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,558 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,559 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) [2020-10-19 18:52:55,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:55,567 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 [2020-10-19 18:52:55,607 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:55,607 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 [2020-10-19 18:52:55,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:55,615 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) [2020-10-19 18:52:55,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:55,643 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,671 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:55,673 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,673 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,673 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,674 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:55,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,674 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,674 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:55,674 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,675 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,792 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,798 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) [2020-10-19 18:52:55,806 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 [2020-10-19 18:52:55,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:55,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:55,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:55,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:55,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:55,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:55,815 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 [2020-10-19 18:52:55,820 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) [2020-10-19 18:52:55,870 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 [2020-10-19 18:52:55,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:55,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:55,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:55,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:55,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:55,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:55,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:55,878 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,882 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:55,882 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,887 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:55,887 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:55,888 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:55,888 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-19 18:52:55,924 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:56,028 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 [2020-10-19 18:52:56,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states. Second operand 3 states. [2020-10-19 18:52:56,106 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. [2020-10-19 18:52:56,107 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 [2020-10-19 18:52:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2020-10-19 18:52:56,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:52:56,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:56,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:52:56,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,116 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2020-10-19 18:52:56,127 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-10-19 18:52:56,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 79 states and 120 transitions. [2020-10-19 18:52:56,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-10-19 18:52:56,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-19 18:52:56,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-10-19 18:52:56,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:56,139 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-10-19 18:52:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-10-19 18:52:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-19 18:52:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:52:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-10-19 18:52:56,171 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-10-19 18:52:56,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:56,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:56,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:56,177 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-10-19 18:52:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:56,246 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-10-19 18:52:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:56,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-10-19 18:52:56,249 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:56,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-10-19 18:52:56,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-19 18:52:56,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-19 18:52:56,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-10-19 18:52:56,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:56,251 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-10-19 18:52:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-19 18:52:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:52:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-19 18:52:56,254 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:56,254 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:56,255 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:52:56,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-10-19 18:52:56,256 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:56,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:56,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:56,257 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:56,257 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:56,257 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 [2020-10-19 18:52:56,257 INFO L796 eck$LassoCheckResult]: Loop: 422#L49-5 assume !false; 439#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 434#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L49-5 [2020-10-19 18:52:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-19 18:52:56,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:56,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089003974] [2020-10-19 18:52:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:56,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089003974] [2020-10-19 18:52:56,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:56,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:56,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947809809] [2020-10-19 18:52:56,305 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:56,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,305 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-19 18:52:56,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:56,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130750365] [2020-10-19 18:52:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:56,377 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:56,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:56,378 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:56,378 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:56,378 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:56,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:56,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:56,379 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:56,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:56,379 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:56,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:56,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:56,496 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:56,497 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) [2020-10-19 18:52:56,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:56,505 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:56,544 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) [2020-10-19 18:52:56,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:56,555 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) [2020-10-19 18:52:56,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:56,612 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 [2020-10-19 18:52:56,657 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:56,660 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:56,661 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:56,661 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:56,661 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:56,661 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:56,662 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,662 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:56,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:56,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:56,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:56,663 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:56,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:56,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:56,778 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:56,778 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) [2020-10-19 18:52:56,792 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 [2020-10-19 18:52:56,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:56,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:56,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:56,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:56,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:56,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:56,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,803 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) [2020-10-19 18:52:56,854 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 [2020-10-19 18:52:56,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:56,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:56,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:56,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:56,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:56,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:56,858 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 [2020-10-19 18:52:56,861 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:56,885 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:56,885 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) [2020-10-19 18:52:56,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:56,899 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:56,900 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:56,900 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,937 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:56,991 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 [2020-10-19 18:52:56,991 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-10-19 18:52:57,011 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. [2020-10-19 18:52:57,012 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 [2020-10-19 18:52:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-10-19 18:52:57,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:57,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:57,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:57,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-19 18:52:57,016 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-19 18:52:57,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-10-19 18:52:57,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-10-19 18:52:57,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-19 18:52:57,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-10-19 18:52:57,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:57,019 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-10-19 18:52:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-10-19 18:52:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-19 18:52:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-19 18:52:57,023 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-19 18:52:57,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:57,024 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-10-19 18:52:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:57,081 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-10-19 18:52:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:57,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-10-19 18:52:57,083 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:57,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-10-19 18:52:57,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-19 18:52:57,084 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:52:57,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-19 18:52:57,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:57,085 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-19 18:52:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-19 18:52:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-19 18:52:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 18:52:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-10-19 18:52:57,089 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-19 18:52:57,089 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-19 18:52:57,089 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:52:57,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-10-19 18:52:57,090 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:57,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:57,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:57,091 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:57,092 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:57,092 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 [2020-10-19 18:52:57,092 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 [2020-10-19 18:52:57,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-19 18:52:57,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793296757] [2020-10-19 18:52:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,136 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,139 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-19 18:52:57,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061224905] [2020-10-19 18:52:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-19 18:52:57,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554570628] [2020-10-19 18:52:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,190 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,213 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:57,214 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:57,214 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:57,214 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:57,214 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:57,214 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,214 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:57,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:57,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-10-19 18:52:57,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:57,215 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:57,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:57,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:57,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:57,314 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) [2020-10-19 18:52:57,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:57,324 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:57,365 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 [2020-10-19 18:52:57,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:57,387 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) [2020-10-19 18:52:57,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:57,440 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,484 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:57,487 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:57,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:57,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:57,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:57,487 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:57,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:57,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:57,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-10-19 18:52:57,489 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:57,489 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:57,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:57,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:57,573 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:57,574 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 [2020-10-19 18:52:57,583 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 [2020-10-19 18:52:57,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:57,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:57,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:57,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:57,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:57,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:57,588 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:57,591 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 [2020-10-19 18:52:57,623 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 [2020-10-19 18:52:57,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:57,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:57,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:57,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:57,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:57,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:57,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:57,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:57,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:57,635 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) [2020-10-19 18:52:57,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:57,664 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:57,664 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:57,664 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,702 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:57,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:57,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:57,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:57,819 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 [2020-10-19 18:52:57,820 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-19 18:52:57,831 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. [2020-10-19 18:52:57,832 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 [2020-10-19 18:52:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-19 18:52:57,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:57,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:57,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:57,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-10-19 18:52:57,835 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:57,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-10-19 18:52:57,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-10-19 18:52:57,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-10-19 18:52:57,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-19 18:52:57,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:57,837 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-19 18:52:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-19 18:52:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-19 18:52:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:52:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-19 18:52:57,841 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:52:57,841 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:52:57,841 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:52:57,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-19 18:52:57,842 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:57,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:57,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:57,843 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:57,843 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:57,843 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 [2020-10-19 18:52:57,843 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 [2020-10-19 18:52:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-10-19 18:52:57,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644996542] [2020-10-19 18:52:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:57,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644996542] [2020-10-19 18:52:57,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:57,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:52:57,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161330770] [2020-10-19 18:52:57,882 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-19 18:52:57,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497191085] [2020-10-19 18:52:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,897 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,919 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:57,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:57,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:57,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:57,919 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:57,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:57,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:57,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-10-19 18:52:57,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:57,920 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:57,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:57,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,010 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,010 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:58,018 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:58,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:58,102 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:58,105 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,105 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:58,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,105 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,105 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-10-19 18:52:58,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,205 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,205 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,212 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 [2020-10-19 18:52:58,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:58,219 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:58,224 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:58,224 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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,230 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:58,230 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:58,230 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:58,230 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-19 18:52:58,251 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:58,304 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 [2020-10-19 18:52:58,304 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-10-19 18:52:58,328 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. [2020-10-19 18:52:58,329 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 [2020-10-19 18:52:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-10-19 18:52:58,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 18:52:58,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-19 18:52:58,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:52:58,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-10-19 18:52:58,335 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:58,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-10-19 18:52:58,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-19 18:52:58,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-10-19 18:52:58,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-19 18:52:58,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:58,336 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-19 18:52:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-19 18:52:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-19 18:52:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-19 18:52:58,345 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-19 18:52:58,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:58,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:58,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:58,346 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-10-19 18:52:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:58,374 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-19 18:52:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:58,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-10-19 18:52:58,376 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:52:58,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-10-19 18:52:58,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-10-19 18:52:58,379 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-10-19 18:52:58,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-10-19 18:52:58,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:58,380 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-19 18:52:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-10-19 18:52:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-19 18:52:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-19 18:52:58,386 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-19 18:52:58,386 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-19 18:52:58,387 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:52:58,387 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-10-19 18:52:58,387 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:52:58,388 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:58,388 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:58,388 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:58,389 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:58,390 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 [2020-10-19 18:52:58,390 INFO L796 eck$LassoCheckResult]: Loop: 1017#L39-5 assume !false; 1027#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1028#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-10-19 18:52:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,391 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-10-19 18:52:58,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:58,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405731367] [2020-10-19 18:52:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:58,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405731367] [2020-10-19 18:52:58,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:58,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:52:58,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398281300] [2020-10-19 18:52:58,477 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-19 18:52:58,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:58,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261526997] [2020-10-19 18:52:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,486 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:58,507 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,508 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:58,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-10-19 18:52:58,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,508 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,576 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,576 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) [2020-10-19 18:52:58,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:58,580 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 [2020-10-19 18:52:58,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:58,617 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) [2020-10-19 18:52:58,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:58,623 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) [2020-10-19 18:52:58,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:58,662 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 [2020-10-19 18:52:58,700 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:58,702 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:58,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-10-19 18:52:58,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,703 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:58,771 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,771 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) [2020-10-19 18:52:58,775 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 [2020-10-19 18:52:58,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,779 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 [2020-10-19 18:52:58,782 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:58,820 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 [2020-10-19 18:52:58,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,827 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:58,830 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:58,830 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) [2020-10-19 18:52:58,833 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:58,834 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:58,834 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:58,834 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 [2020-10-19 18:52:58,869 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:58,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:58,930 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 [2020-10-19 18:52:58,930 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-19 18:52:58,942 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. [2020-10-19 18:52:58,942 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 [2020-10-19 18:52:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-10-19 18:52:58,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-19 18:52:58,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-19 18:52:58,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-19 18:52:58,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-10-19 18:52:58,945 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:58,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-10-19 18:52:58,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-19 18:52:58,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-10-19 18:52:58,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-10-19 18:52:58,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:58,948 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-19 18:52:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-10-19 18:52:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-19 18:52:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:52:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-19 18:52:58,951 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-19 18:52:58,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:52:58,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:52:58,952 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-10-19 18:52:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:59,024 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-19 18:52:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:52:59,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-10-19 18:52:59,026 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:52:59,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-10-19 18:52:59,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-19 18:52:59,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:52:59,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-19 18:52:59,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:59,028 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-19 18:52:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-19 18:52:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-19 18:52:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 18:52:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-19 18:52:59,031 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-19 18:52:59,031 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-19 18:52:59,031 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:52:59,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-10-19 18:52:59,032 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:52:59,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:59,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:59,033 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:59,033 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:59,034 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 [2020-10-19 18:52:59,034 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 [2020-10-19 18:52:59,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,034 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-10-19 18:52:59,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582102423] [2020-10-19 18:52:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582102423] [2020-10-19 18:52:59,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565668297] [2020-10-19 18:52:59,066 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 [2020-10-19 18:52:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:59,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:52:59,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 18:52:59,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367673385] [2020-10-19 18:52:59,125 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:59,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,126 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-10-19 18:52:59,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523745912] [2020-10-19 18:52:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:59,138 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:59,161 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:59,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:59,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:59,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:59,162 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:59,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:59,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:59,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-10-19 18:52:59,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:59,163 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:59,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,261 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:59,261 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) [2020-10-19 18:52:59,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:59,264 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) [2020-10-19 18:52:59,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:59,298 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 [2020-10-19 18:52:59,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:59,323 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:59,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:59,323 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:59,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:59,323 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:59,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:59,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:59,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-10-19 18:52:59,324 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:59,324 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:59,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,418 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:59,419 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) [2020-10-19 18:52:59,422 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 [2020-10-19 18:52:59,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:59,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:59,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:59,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:59,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:59,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:59,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:59,427 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,433 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:59,433 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) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:59,436 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:59,436 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:59,436 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-19 18:52:59,456 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:59,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,503 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 [2020-10-19 18:52:59,503 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-10-19 18:52:59,513 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. [2020-10-19 18:52:59,514 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 [2020-10-19 18:52:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-10-19 18:52:59,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-19 18:52:59,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:59,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-19 18:52:59,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:59,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-19 18:52:59,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:59,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-19 18:52:59,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:59,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-10-19 18:52:59,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-10-19 18:52:59,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-19 18:52:59,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-19 18:52:59,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:59,520 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:52:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-19 18:52:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-19 18:52:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:52:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-19 18:52:59,524 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:52:59,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:59,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:52:59,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:52:59,525 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-10-19 18:52:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:59,561 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-19 18:52:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:52:59,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-10-19 18:52:59,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:59,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-10-19 18:52:59,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-10-19 18:52:59,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-10-19 18:52:59,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-19 18:52:59,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:59,563 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-19 18:52:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-19 18:52:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-19 18:52:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:52:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-19 18:52:59,571 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-19 18:52:59,571 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-19 18:52:59,571 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:52:59,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-10-19 18:52:59,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:59,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:59,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:59,572 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] [2020-10-19 18:52:59,572 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:59,573 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 [2020-10-19 18:52:59,573 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 [2020-10-19 18:52:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-10-19 18:52:59,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837579224] [2020-10-19 18:52:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837579224] [2020-10-19 18:52:59,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133468341] [2020-10-19 18:52:59,636 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 [2020-10-19 18:52:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:59,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:52:59,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:59,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:52:59,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 18:52:59,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965310515] [2020-10-19 18:52:59,740 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-10-19 18:52:59,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:59,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194843652] [2020-10-19 18:52:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:59,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:59,748 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:59,769 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:59,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:59,769 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:59,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:59,769 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:59,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:59,770 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:59,770 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-10-19 18:52:59,770 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:59,770 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:59,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,849 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:59,849 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) [2020-10-19 18:52:59,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:59,865 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 [2020-10-19 18:52:59,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:59,906 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) [2020-10-19 18:52:59,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:59,915 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) [2020-10-19 18:52:59,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:59,953 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,987 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:59,989 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:59,989 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:59,989 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:59,989 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:59,989 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:59,989 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:59,989 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:59,989 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:59,990 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-10-19 18:52:59,990 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:59,990 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:59,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:59,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:53:00,067 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:53:00,067 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 [2020-10-19 18:53:00,071 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 [2020-10-19 18:53:00,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:00,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:00,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:00,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:00,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:00,074 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:00,074 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:00,077 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 [2020-10-19 18:53:00,102 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 [2020-10-19 18:53:00,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:53:00,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:53:00,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:53:00,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:53:00,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:53:00,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:53:00,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:53:00,109 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:53:00,119 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:53:00,120 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) [2020-10-19 18:53:00,123 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:53:00,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:53:00,124 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:53:00,124 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 [2020-10-19 18:53:00,150 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:53:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:53:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:00,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:53:00,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:53:00,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:53:00,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:53:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:53:00,234 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 [2020-10-19 18:53:00,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-19 18:53:00,244 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. [2020-10-19 18:53:00,247 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 [2020-10-19 18:53:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:53:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-10-19 18:53:00,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-19 18:53:00,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:00,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-19 18:53:00,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:00,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-19 18:53:00,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:53:00,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-19 18:53:00,250 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:53:00,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-10-19 18:53:00,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:53:00,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:53:00,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:53:00,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:53:00,250 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:00,251 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:00,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:53:00,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:53:00,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:53:00,251 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-19 18:53:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:53:00,252 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 18:53:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:53:00,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 18:53:00,252 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:53:00,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:53:00,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:53:00,252 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:53:00,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:53:00,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:53:00,253 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:00,253 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:00,253 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:53:00,253 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 18:53:00,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:53:00,253 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:53:00,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:53:00,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:53:00 BoogieIcfgContainer [2020-10-19 18:53:00,259 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:53:00,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:53:00,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:53:00,260 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:53:00,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:54" (3/4) ... [2020-10-19 18:53:00,263 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:53:00,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:53:00,266 INFO L168 Benchmark]: Toolchain (without parser) took 6576.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 960.0 MB in the beginning and 850.7 MB in the end (delta: 109.3 MB). Peak memory consumption was 326.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:00,266 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:53:00,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:00,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:00,268 INFO L168 Benchmark]: Boogie Preprocessor took 53.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:00,269 INFO L168 Benchmark]: RCFGBuilder took 550.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:00,270 INFO L168 Benchmark]: BuchiAutomizer took 5364.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 850.7 MB in the end (delta: 241.3 MB). Peak memory consumption was 316.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:53:00,270 INFO L168 Benchmark]: Witness Printer took 3.90 ms. Allocated memory is still 1.2 GB. Free memory is still 850.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:53:00,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 535.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 550.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5364.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 850.7 MB in the end (delta: 241.3 MB). Peak memory consumption was 316.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.90 ms. Allocated memory is still 1.2 GB. Free memory is still 850.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.0s. 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: 21ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...