./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_2a.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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:14:03,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:14:03,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:14:03,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:14:03,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:14:03,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:14:03,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:14:03,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:14:03,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:14:03,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:14:03,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:14:03,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:14:03,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:14:03,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:14:03,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:14:03,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:14:03,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:14:03,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:14:03,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:14:03,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:14:03,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:14:03,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:14:03,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:14:03,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:14:03,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:14:03,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:14:03,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:14:03,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:14:03,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:14:03,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:14:03,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:14:03,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:14:03,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:14:03,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:14:03,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:14:03,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:14:03,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:14:03,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:14:03,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:14:03,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:14:03,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:14:03,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:14:03,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:14:03,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:14:03,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:14:03,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:14:03,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:14:03,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:14:03,488 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:14:03,488 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:14:03,488 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:14:03,488 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:14:03,489 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:14:03,489 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:14:03,489 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:14:03,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:14:03,490 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:14:03,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:14:03,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:14:03,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:14:03,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:14:03,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:14:03,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:14:03,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:14:03,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:14:03,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:14:03,497 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:14:03,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:14:03,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:14:03,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:14:03,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:14:03,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:14:03,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:14:03,499 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:14:03,499 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2021-12-28 09:14:03,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:14:03,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:14:03,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:14:03,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:14:03,797 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:14:03,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-12-28 09:14:03,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39200294/23231a264e554aa98614565bbbd73404/FLAG664ba9e01 [2021-12-28 09:14:04,266 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:14:04,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-12-28 09:14:04,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39200294/23231a264e554aa98614565bbbd73404/FLAG664ba9e01 [2021-12-28 09:14:04,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39200294/23231a264e554aa98614565bbbd73404 [2021-12-28 09:14:04,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:14:04,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:14:04,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:14:04,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:14:04,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:14:04,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a32a66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04, skipping insertion in model container [2021-12-28 09:14:04,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:14:04,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:14:04,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-12-28 09:14:04,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:14:04,505 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:14:04,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-12-28 09:14:04,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:14:04,579 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:14:04,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04 WrapperNode [2021-12-28 09:14:04,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:14:04,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:14:04,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:14:04,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:14:04,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,609 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 276 [2021-12-28 09:14:04,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:14:04,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:14:04,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:14:04,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:14:04,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:14:04,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:14:04,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:14:04,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:14:04,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (1/1) ... [2021-12-28 09:14:04,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:04,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:04,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:04,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:14:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:14:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:14:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:14:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:14:04,754 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:14:04,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:14:04,998 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:14:05,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:14:05,002 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-28 09:14:05,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:14:05 BoogieIcfgContainer [2021-12-28 09:14:05,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:14:05,004 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:14:05,004 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:14:05,006 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:14:05,006 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:14:05,006 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:14:04" (1/3) ... [2021-12-28 09:14:05,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64db45b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:14:05, skipping insertion in model container [2021-12-28 09:14:05,007 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:14:05,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:14:04" (2/3) ... [2021-12-28 09:14:05,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64db45b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:14:05, skipping insertion in model container [2021-12-28 09:14:05,007 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:14:05,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:14:05" (3/3) ... [2021-12-28 09:14:05,008 INFO L388 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-12-28 09:14:05,053 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:14:05,053 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:14:05,053 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:14:05,054 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:14:05,054 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:14:05,054 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:14:05,054 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:14:05,054 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:14:05,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:05,076 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-12-28 09:14:05,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:05,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:05,079 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-28 09:14:05,079 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:05,079 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:14:05,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:05,083 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-12-28 09:14:05,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:05,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:05,084 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-28 09:14:05,084 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:05,088 INFO L791 eck$LassoCheckResult]: Stem: 53#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 39#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 20#L29true assume !(0 == base2flt_~m#1 % 4294967296); 50#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 59#L57-2true [2021-12-28 09:14:05,089 INFO L793 eck$LassoCheckResult]: Loop: 59#L57-2true assume !false; 37#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 34#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 59#L57-2true [2021-12-28 09:14:05,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2021-12-28 09:14:05,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:05,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606806395] [2021-12-28 09:14:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:05,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:05,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:05,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606806395] [2021-12-28 09:14:05,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606806395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:05,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:05,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:14:05,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511738184] [2021-12-28 09:14:05,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:05,260 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:14:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2021-12-28 09:14:05,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:05,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846494581] [2021-12-28 09:14:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:05,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:05,285 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:05,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:05,344 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:05,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:05,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:05,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:05,346 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:05,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:05,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:05,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2021-12-28 09:14:05,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:05,347 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:05,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:05,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:05,451 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:05,452 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:05,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:05,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:05,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:05,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:05,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-28 09:14:05,498 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:05,499 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:14:05,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:05,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:05,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:05,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-28 09:14:05,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:05,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:05,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:05,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:05,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:05,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-28 09:14:05,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:05,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:05,587 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:05,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:05,595 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:05,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:05,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:05,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:05,595 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:05,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,595 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:05,595 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:05,595 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2021-12-28 09:14:05,595 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:05,595 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:05,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:05,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:05,681 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:05,684 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:05,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:05,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:05,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-28 09:14:05,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:05,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:05,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:05,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:05,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:05,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:05,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:05,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:05,732 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:05,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:05,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:05,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:05,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-28 09:14:05,751 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:05,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:05,757 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:05,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:05,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:05,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:05,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:05,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:05,771 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:05,774 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:05,774 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:05,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:05,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:05,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:05,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-28 09:14:05,779 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:05,780 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:05,780 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:05,780 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-28 09:14:05,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:05,802 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:05,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:05,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:05,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:05,883 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 [2021-12-28 09:14:05,884 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:05,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 207 states and 347 transitions. Complement of second has 6 states. [2021-12-28 09:14:05,956 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 [2021-12-28 09:14:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2021-12-28 09:14:05,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-28 09:14:05,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:05,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-28 09:14:05,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:05,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-28 09:14:05,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:05,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 347 transitions. [2021-12-28 09:14:05,983 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2021-12-28 09:14:05,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 79 states and 120 transitions. [2021-12-28 09:14:05,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-12-28 09:14:05,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-12-28 09:14:05,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2021-12-28 09:14:05,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:05,988 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2021-12-28 09:14:05,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-28 09:14:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2021-12-28 09:14:06,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-12-28 09:14:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.588235294117647) internal successors, (108), 67 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2021-12-28 09:14:06,009 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2021-12-28 09:14:06,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:06,012 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:06,053 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-12-28 09:14:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:06,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2021-12-28 09:14:06,055 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-12-28 09:14:06,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2021-12-28 09:14:06,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-12-28 09:14:06,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-12-28 09:14:06,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2021-12-28 09:14:06,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:14:06,056 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-12-28 09:14:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2021-12-28 09:14:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-28 09:14:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2021-12-28 09:14:06,058 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-12-28 09:14:06,058 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-12-28 09:14:06,058 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:14:06,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2021-12-28 09:14:06,058 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-12-28 09:14:06,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:06,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:06,059 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:06,059 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:06,059 INFO L791 eck$LassoCheckResult]: Stem: 456#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 430#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 431#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 459#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 435#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 436#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 437#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 438#L57-5 [2021-12-28 09:14:06,059 INFO L793 eck$LassoCheckResult]: Loop: 438#L57-5 assume !false; 440#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 441#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 438#L57-5 [2021-12-28 09:14:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2021-12-28 09:14:06,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:06,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930027646] [2021-12-28 09:14:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:06,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:06,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:06,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930027646] [2021-12-28 09:14:06,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930027646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:06,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:06,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:14:06,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073290281] [2021-12-28 09:14:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:06,098 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:14:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2021-12-28 09:14:06,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:06,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922435590] [2021-12-28 09:14:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:06,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,107 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,114 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:06,137 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:06,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:06,138 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:06,138 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:06,138 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:06,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:06,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:06,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2021-12-28 09:14:06,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:06,138 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:06,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,235 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:06,236 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:06,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-28 09:14:06,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:06,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:06,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:06,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-28 09:14:06,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:06,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:06,319 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:06,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:06,330 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:06,330 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:06,330 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:06,330 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:06,330 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:06,330 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,330 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:06,330 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:06,330 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2021-12-28 09:14:06,330 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:06,330 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:06,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,408 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:06,409 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:06,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:06,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:06,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:06,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:06,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:06,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:06,434 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:06,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:06,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-28 09:14:06,451 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:06,464 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:06,464 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:06,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-28 09:14:06,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:06,468 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:06,468 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:06,468 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-28 09:14:06,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:06,489 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:06,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:06,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:06,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:06,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:06,540 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 [2021-12-28 09:14:06,540 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,558 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 85 transitions. Complement of second has 5 states. [2021-12-28 09:14:06,558 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 [2021-12-28 09:14:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2021-12-28 09:14:06,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-28 09:14:06,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:06,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-28 09:14:06,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:06,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-28 09:14:06,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:06,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2021-12-28 09:14:06,563 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2021-12-28 09:14:06,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2021-12-28 09:14:06,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-28 09:14:06,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-12-28 09:14:06,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2021-12-28 09:14:06,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:06,565 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2021-12-28 09:14:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2021-12-28 09:14:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2021-12-28 09:14:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2021-12-28 09:14:06,571 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-12-28 09:14:06,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:06,573 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:06,612 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-12-28 09:14:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:06,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-12-28 09:14:06,614 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-12-28 09:14:06,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2021-12-28 09:14:06,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-12-28 09:14:06,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-12-28 09:14:06,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-12-28 09:14:06,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:14:06,617 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-12-28 09:14:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-12-28 09:14:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-28 09:14:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-28 09:14:06,623 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-28 09:14:06,623 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-28 09:14:06,623 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:14:06,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2021-12-28 09:14:06,624 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-12-28 09:14:06,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:06,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:06,625 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:06,626 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:06,626 INFO L791 eck$LassoCheckResult]: Stem: 674#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 651#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 652#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 677#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 656#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 657#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 658#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 659#L47-3 [2021-12-28 09:14:06,626 INFO L793 eck$LassoCheckResult]: Loop: 659#L47-3 assume !false; 675#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 668#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 659#L47-3 [2021-12-28 09:14:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2021-12-28 09:14:06,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:06,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363480947] [2021-12-28 09:14:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:06,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,654 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,666 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2021-12-28 09:14:06,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:06,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210576795] [2021-12-28 09:14:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:06,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,685 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,687 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2021-12-28 09:14:06,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:06,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521697904] [2021-12-28 09:14:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:06,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,697 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:06,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:06,728 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:06,729 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:06,729 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:06,729 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:06,729 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:06,729 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,729 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:06,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:06,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2021-12-28 09:14:06,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:06,729 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:06,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,790 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:06,790 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:06,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,791 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-28 09:14:06,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:06,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:06,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:06,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-28 09:14:06,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:06,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:06,848 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:06,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:06,852 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:06,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:06,852 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:06,852 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:06,852 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:06,852 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,852 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:06,852 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:06,852 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2021-12-28 09:14:06,852 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:06,852 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:06,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:06,914 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:06,914 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:06,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,915 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-28 09:14:06,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:06,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:06,924 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:06,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:06,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:06,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:06,925 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:06,925 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:06,939 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:06,941 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:06,941 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:06,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:06,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:06,942 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:06,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-28 09:14:06,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:06,944 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:06,944 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:06,944 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-12-28 09:14:06,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:06,962 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:06,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:06,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:06,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:07,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:07,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:07,058 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 [2021-12-28 09:14:07,058 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,068 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 50 transitions. Complement of second has 5 states. [2021-12-28 09:14:07,068 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 [2021-12-28 09:14:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-12-28 09:14:07,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-28 09:14:07,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-28 09:14:07,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-28 09:14:07,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2021-12-28 09:14:07,074 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-12-28 09:14:07,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2021-12-28 09:14:07,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-12-28 09:14:07,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-12-28 09:14:07,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-12-28 09:14:07,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:07,075 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-12-28 09:14:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-12-28 09:14:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-12-28 09:14:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-12-28 09:14:07,079 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-12-28 09:14:07,079 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-12-28 09:14:07,079 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:14:07,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2021-12-28 09:14:07,080 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-12-28 09:14:07,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:07,080 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:07,080 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:07,081 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:07,081 INFO L791 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 773#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 774#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 802#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 778#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 779#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 780#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 781#L47-3 assume !false; 799#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 785#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 789#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 796#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 793#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 794#L57-8 [2021-12-28 09:14:07,081 INFO L793 eck$LassoCheckResult]: Loop: 794#L57-8 assume !false; 786#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 788#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 794#L57-8 [2021-12-28 09:14:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2021-12-28 09:14:07,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:07,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850209213] [2021-12-28 09:14:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:07,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:07,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:07,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:07,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850209213] [2021-12-28 09:14:07,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850209213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:07,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:07,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:14:07,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617074407] [2021-12-28 09:14:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:07,118 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:14:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2021-12-28 09:14:07,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:07,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806084581] [2021-12-28 09:14:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:07,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:07,123 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:07,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:07,147 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:07,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:07,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:07,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:07,147 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:07,147 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:07,148 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:07,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2021-12-28 09:14:07,148 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:07,148 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:07,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,221 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:07,221 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:07,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,222 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-28 09:14:07,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:07,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:07,246 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:14:07,246 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:14:07,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,250 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-28 09:14:07,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:07,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:07,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-28 09:14:07,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,295 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-28 09:14:07,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:07,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:07,323 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:07,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,327 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:07,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:07,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:07,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:07,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:07,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:07,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:07,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2021-12-28 09:14:07,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:07,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:07,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,401 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:07,402 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:07,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-28 09:14:07,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:07,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:07,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:07,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:07,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:07,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:07,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:07,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:07,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:14:07,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,455 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:07,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:07,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:07,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:07,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:07,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:07,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:07,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:07,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-28 09:14:07,479 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:07,482 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:07,482 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:07,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,483 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-28 09:14:07,495 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:07,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:07,496 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:07,496 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-28 09:14:07,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,514 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:07,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:07,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:07,570 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 [2021-12-28 09:14:07,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,578 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 65 transitions. Complement of second has 5 states. [2021-12-28 09:14:07,579 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 [2021-12-28 09:14:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2021-12-28 09:14:07,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2021-12-28 09:14:07,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2021-12-28 09:14:07,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2021-12-28 09:14:07,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2021-12-28 09:14:07,580 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-12-28 09:14:07,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2021-12-28 09:14:07,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-12-28 09:14:07,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-12-28 09:14:07,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-12-28 09:14:07,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:07,581 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-12-28 09:14:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-12-28 09:14:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2021-12-28 09:14:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-12-28 09:14:07,589 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-12-28 09:14:07,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:07,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:14:07,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:14:07,589 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-28 09:14:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:07,615 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-12-28 09:14:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:14:07,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-12-28 09:14:07,619 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-12-28 09:14:07,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2021-12-28 09:14:07,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-12-28 09:14:07,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-12-28 09:14:07,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2021-12-28 09:14:07,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:07,620 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-12-28 09:14:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2021-12-28 09:14:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-12-28 09:14:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.263157894736842) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-12-28 09:14:07,622 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-12-28 09:14:07,622 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-12-28 09:14:07,622 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:14:07,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2021-12-28 09:14:07,623 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-12-28 09:14:07,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:07,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:07,623 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:07,623 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:07,623 INFO L791 eck$LassoCheckResult]: Stem: 1032#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 1005#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1006#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1036#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1010#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1011#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1012#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1013#L47-3 assume !false; 1034#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1023#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1016#L73-1 base2flt_~m#1 := ~bitwiseAnd(base2flt_~m#1, ~bitwiseComplement(16777216));base2flt_~res~0#1 := ~bitwiseOr(base2flt_~m#1, 16777216 * (128 + base2flt_~e#1));base2flt_~__retres4~0#1 := base2flt_~res~0#1; 1017#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1026#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1030#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1027#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1029#L47-5 [2021-12-28 09:14:07,623 INFO L793 eck$LassoCheckResult]: Loop: 1029#L47-5 assume !false; 1031#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1038#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1029#L47-5 [2021-12-28 09:14:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2021-12-28 09:14:07,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:07,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861069931] [2021-12-28 09:14:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:07,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:07,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861069931] [2021-12-28 09:14:07,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861069931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:14:07,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:14:07,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 09:14:07,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359095149] [2021-12-28 09:14:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:14:07,661 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:14:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2021-12-28 09:14:07,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:07,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973852462] [2021-12-28 09:14:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:07,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:07,665 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:07,667 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:07,686 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:07,686 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:07,686 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:07,686 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:07,686 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:07,686 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,687 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:07,687 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:07,687 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2021-12-28 09:14:07,687 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:07,687 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:07,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,732 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:07,732 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:07,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-28 09:14:07,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:07,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:07,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,776 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-28 09:14:07,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:07,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:07,803 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:07,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:07,808 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:07,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:07,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:07,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:07,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:07,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:07,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:07,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2021-12-28 09:14:07,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:07,808 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:07,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:07,865 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:07,866 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:07,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,867 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-28 09:14:07,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:07,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:07,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:07,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:07,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:07,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:07,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:07,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:07,884 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:07,885 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:07,885 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:07,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:07,886 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:07,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-28 09:14:07,888 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:07,888 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:07,888 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:07,888 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-12-28 09:14:07,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-28 09:14:07,904 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:07,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:07,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:07,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:07,977 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 [2021-12-28 09:14:07,977 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,987 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 69 transitions. Complement of second has 5 states. [2021-12-28 09:14:07,988 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 [2021-12-28 09:14:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-12-28 09:14:07,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2021-12-28 09:14:07,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2021-12-28 09:14:07,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-28 09:14:07,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:07,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2021-12-28 09:14:07,990 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-12-28 09:14:07,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2021-12-28 09:14:07,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-12-28 09:14:07,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-12-28 09:14:07,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2021-12-28 09:14:07,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:07,991 INFO L681 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2021-12-28 09:14:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2021-12-28 09:14:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-12-28 09:14:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-12-28 09:14:07,992 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-12-28 09:14:07,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:07,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 09:14:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 09:14:07,993 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:08,030 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-12-28 09:14:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 09:14:08,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2021-12-28 09:14:08,031 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:14:08,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2021-12-28 09:14:08,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-12-28 09:14:08,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-12-28 09:14:08,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-12-28 09:14:08,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:08,032 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-12-28 09:14:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-12-28 09:14:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-12-28 09:14:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-12-28 09:14:08,033 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-12-28 09:14:08,033 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-12-28 09:14:08,033 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-28 09:14:08,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2021-12-28 09:14:08,034 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-28 09:14:08,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:08,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:08,034 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:08,034 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:08,035 INFO L791 eck$LassoCheckResult]: Stem: 1294#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 1264#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1265#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1298#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1269#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1270#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1271#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1272#L47-3 assume !false; 1296#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1282#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1283#L47-3 assume !false; 1295#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1276#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1285#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1289#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1260#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1261#L80-2 main_#t~ret10#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret10#1;havoc main_#t~ret10#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1297#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1266#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1267#L57-11 [2021-12-28 09:14:08,035 INFO L793 eck$LassoCheckResult]: Loop: 1267#L57-11 assume !false; 1273#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 1274#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1267#L57-11 [2021-12-28 09:14:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2021-12-28 09:14:08,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221174378] [2021-12-28 09:14:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:08,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221174378] [2021-12-28 09:14:08,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221174378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:14:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099200283] [2021-12-28 09:14:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:08,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:14:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,071 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-28 09:14:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:08,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:08,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:08,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:14:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099200283] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:14:08,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:14:08,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-28 09:14:08,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193475509] [2021-12-28 09:14:08,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:14:08,170 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:14:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2021-12-28 09:14:08,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:08,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529605385] [2021-12-28 09:14:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:08,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:08,174 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:08,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:08,194 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:08,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:08,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:08,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:08,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:08,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:08,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:08,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2021-12-28 09:14:08,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:08,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:08,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,253 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:08,253 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:08,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,254 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-28 09:14:08,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:08,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:08,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:08,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,296 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-28 09:14:08,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:08,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:08,327 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:08,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:08,335 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:08,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:08,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:08,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:08,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:08,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:08,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:08,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2021-12-28 09:14:08,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:08,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:08,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,392 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:08,392 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:08,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,393 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-28 09:14:08,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:08,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:08,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:08,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:08,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:08,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:08,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:08,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:08,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:08,418 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:08,418 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:08,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,419 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-28 09:14:08,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:08,421 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:08,421 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:08,421 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-28 09:14:08,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-28 09:14:08,437 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:08,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:08,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:08,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:08,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,505 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 [2021-12-28 09:14:08,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,510 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 59 transitions. Complement of second has 4 states. [2021-12-28 09:14:08,510 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 [2021-12-28 09:14:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2021-12-28 09:14:08,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2021-12-28 09:14:08,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:08,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2021-12-28 09:14:08,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:08,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2021-12-28 09:14:08,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:08,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-12-28 09:14:08,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-28 09:14:08,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2021-12-28 09:14:08,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-28 09:14:08,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-28 09:14:08,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2021-12-28 09:14:08,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:08,512 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-28 09:14:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2021-12-28 09:14:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-28 09:14:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.275) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-12-28 09:14:08,513 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-28 09:14:08,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 09:14:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-28 09:14:08,514 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:08,531 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-28 09:14:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 09:14:08,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 74 transitions. [2021-12-28 09:14:08,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-28 09:14:08,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 56 states and 68 transitions. [2021-12-28 09:14:08,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-12-28 09:14:08,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-12-28 09:14:08,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 68 transitions. [2021-12-28 09:14:08,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:14:08,532 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-12-28 09:14:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 68 transitions. [2021-12-28 09:14:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-12-28 09:14:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-12-28 09:14:08,533 INFO L704 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-12-28 09:14:08,534 INFO L587 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-12-28 09:14:08,534 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-28 09:14:08,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 58 transitions. [2021-12-28 09:14:08,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-28 09:14:08,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:14:08,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:14:08,534 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:14:08,534 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-28 09:14:08,534 INFO L791 eck$LassoCheckResult]: Stem: 1677#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 1651#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sa~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1652#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1681#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1655#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1656#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1657#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1658#L47-3 assume !false; 1679#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1666#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1667#L47-3 assume !false; 1684#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1692#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1659#L73-1 base2flt_~m#1 := ~bitwiseAnd(base2flt_~m#1, ~bitwiseComplement(16777216));base2flt_~res~0#1 := ~bitwiseOr(base2flt_~m#1, 16777216 * (128 + base2flt_~e#1));base2flt_~__retres4~0#1 := base2flt_~res~0#1; 1660#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1668#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1672#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1647#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1648#L80-2 main_#t~ret10#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret10#1;havoc main_#t~ret10#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1680#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1653#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 1654#L47-7 [2021-12-28 09:14:08,535 INFO L793 eck$LassoCheckResult]: Loop: 1654#L47-7 assume !false; 1649#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1650#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 1654#L47-7 [2021-12-28 09:14:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2021-12-28 09:14:08,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:08,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009648077] [2021-12-28 09:14:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:08,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:08,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-28 09:14:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:14:08,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009648077] [2021-12-28 09:14:08,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009648077] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:14:08,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066507468] [2021-12-28 09:14:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:08,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:14:08,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,610 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-28 09:14:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:08,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 09:14:08,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:14:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:08,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066507468] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:14:08,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:14:08,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-28 09:14:08,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680279992] [2021-12-28 09:14:08,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:14:08,750 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:14:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:08,750 INFO L85 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2021-12-28 09:14:08,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:14:08,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538053627] [2021-12-28 09:14:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:14:08,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:14:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:08,754 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:14:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:14:08,755 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:14:08,772 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:08,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:08,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:08,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:08,772 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:14:08,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:08,773 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:08,773 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2021-12-28 09:14:08,773 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:08,773 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:08,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,824 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:08,824 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:14:08,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,825 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-28 09:14:08,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:14:08,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:08,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:08,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,879 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-28 09:14:08,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:14:08,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:14:08,909 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:14:08,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:08,912 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:14:08,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:14:08,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:14:08,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:14:08,912 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:14:08,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:14:08,913 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:14:08,913 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2021-12-28 09:14:08,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:14:08,913 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:14:08,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:14:08,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:14:08,958 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:14:08,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,959 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-28 09:14:08,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:14:08,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:14:08,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:14:08,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:14:08,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:14:08,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:14:08,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:14:08,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:14:08,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:14:08,985 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:14:08,985 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:14:08,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:14:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:14:08,996 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:14:08,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-28 09:14:08,998 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:14:08,998 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:14:08,998 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:14:08,999 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-12-28 09:14:09,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:09,015 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:14:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:14:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:09,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:14:09,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:14:09,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:14:09,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:14:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:14:09,099 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 [2021-12-28 09:14:09,099 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 16 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:09,103 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 16. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 50 states and 62 transitions. Complement of second has 4 states. [2021-12-28 09:14:09,104 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 [2021-12-28 09:14:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2021-12-28 09:14:09,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2021-12-28 09:14:09,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:09,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2021-12-28 09:14:09,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:09,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2021-12-28 09:14:09,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:14:09,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 62 transitions. [2021-12-28 09:14:09,105 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:14:09,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 0 states and 0 transitions. [2021-12-28 09:14:09,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-28 09:14:09,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-28 09:14:09,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-28 09:14:09,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:14:09,105 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:14:09,105 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:14:09,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:14:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 09:14:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-28 09:14:09,106 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:14:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:14:09,106 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-28 09:14:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 09:14:09,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-28 09:14:09,106 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:14:09,106 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 09:14:09,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-28 09:14:09,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-28 09:14:09,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-28 09:14:09,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:14:09,107 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:14:09,107 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:14:09,107 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:14:09,107 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-28 09:14:09,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-28 09:14:09,107 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:14:09,107 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-28 09:14:09,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:14:09 BoogieIcfgContainer [2021-12-28 09:14:09,112 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:14:09,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:14:09,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:14:09,113 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:14:09,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:14:05" (3/4) ... [2021-12-28 09:14:09,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 09:14:09,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:14:09,116 INFO L158 Benchmark]: Toolchain (without parser) took 4824.44ms. Allocated memory was 54.5MB in the beginning and 104.9MB in the end (delta: 50.3MB). Free memory was 33.4MB in the beginning and 42.6MB in the end (delta: -9.2MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2021-12-28 09:14:09,116 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:14:09,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.66ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 33.2MB in the beginning and 53.2MB in the end (delta: -20.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-28 09:14:09,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.89ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 50.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:14:09,117 INFO L158 Benchmark]: Boogie Preprocessor took 31.88ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 49.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:14:09,117 INFO L158 Benchmark]: RCFGBuilder took 361.33ms. Allocated memory is still 71.3MB. Free memory was 49.2MB in the beginning and 33.3MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 09:14:09,117 INFO L158 Benchmark]: BuchiAutomizer took 4108.42ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 33.3MB in the beginning and 42.6MB in the end (delta: -9.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2021-12-28 09:14:09,117 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 104.9MB. Free memory is still 42.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:14:09,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.66ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 33.2MB in the beginning and 53.2MB in the end (delta: -20.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.89ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 50.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.88ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 49.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.33ms. Allocated memory is still 71.3MB. Free memory was 49.2MB in the beginning and 33.3MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 4108.42ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 33.3MB in the beginning and 42.6MB in the end (delta: -9.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 104.9MB. Free memory is still 42.6MB. There was no memory consumed. Max. memory is 16.1GB. * 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 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 78 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 46 states and ocurred in iteration 6. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 368 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 683 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 529 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp56 ukn100 mio100 lsp100 div561 bol100 ite100 ukn100 eq132 hnf96 smp42 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-28 09:14:09,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:09,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-28 09:14:09,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-28 09:14:09,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE