./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c 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_3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:27:02,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:27:02,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:27:02,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:27:02,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:27:02,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:27:02,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:27:02,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:27:02,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:27:02,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:27:02,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:27:02,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:27:02,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:27:02,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:27:02,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:27:02,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:27:02,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:27:02,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:27:02,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:27:02,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:27:02,944 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:27:02,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:27:02,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:27:02,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:27:02,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:27:02,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:27:02,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:27:02,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:27:02,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:27:02,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:27:02,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:27:02,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:27:02,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:27:02,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:27:02,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:27:02,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:27:02,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:27:02,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:27:02,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:27:02,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:27:02,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:27:02,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:27:02,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-13 03:27:02,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:27:02,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:27:02,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:27:02,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:27:02,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:27:02,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:27:02,989 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:27:02,990 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:27:02,990 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:27:02,990 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:27:02,991 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:27:02,991 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:27:02,991 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:27:02,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:27:02,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 03:27:02,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:27:02,993 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 03:27:02,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:27:02,994 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:27:02,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:27:02,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:27:02,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:27:02,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:27:02,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:27:02,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:27:02,996 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:27:02,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-07-13 03:27:03,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:27:03,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:27:03,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:27:03,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:27:03,218 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:27:03,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-07-13 03:27:03,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db107df8/ae3b30d7d71049a9a54b56671917ec01/FLAGdd7476e7e [2022-07-13 03:27:03,642 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:27:03,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-07-13 03:27:03,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db107df8/ae3b30d7d71049a9a54b56671917ec01/FLAGdd7476e7e [2022-07-13 03:27:04,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db107df8/ae3b30d7d71049a9a54b56671917ec01 [2022-07-13 03:27:04,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:27:04,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:27:04,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:27:04,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:27:04,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:27:04,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ab3bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04, skipping insertion in model container [2022-07-13 03:27:04,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:27:04,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:27:04,223 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_3a.c.cil.c[728,741] [2022-07-13 03:27:04,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:27:04,276 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:27:04,284 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_3a.c.cil.c[728,741] [2022-07-13 03:27:04,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:27:04,322 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:27:04,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04 WrapperNode [2022-07-13 03:27:04,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:27:04,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:27:04,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:27:04,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:27:04,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,363 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 430 [2022-07-13 03:27:04,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:27:04,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:27:04,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:27:04,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:27:04,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:27:04,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:27:04,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:27:04,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:27:04,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (1/1) ... [2022-07-13 03:27:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:04,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:04,437 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) [2022-07-13 03:27:04,447 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 [2022-07-13 03:27:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 03:27:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 03:27:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:27:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:27:04,546 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:27:04,548 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:27:04,998 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:27:05,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:27:05,007 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-13 03:27:05,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:27:05 BoogieIcfgContainer [2022-07-13 03:27:05,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:27:05,011 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:27:05,011 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:27:05,014 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:27:05,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:27:05,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:27:04" (1/3) ... [2022-07-13 03:27:05,016 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4585e8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:27:05, skipping insertion in model container [2022-07-13 03:27:05,016 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:27:05,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:04" (2/3) ... [2022-07-13 03:27:05,017 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4585e8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:27:05, skipping insertion in model container [2022-07-13 03:27:05,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:27:05,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:27:05" (3/3) ... [2022-07-13 03:27:05,018 INFO L354 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2022-07-13 03:27:05,075 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:27:05,075 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:27:05,075 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:27:05,075 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:27:05,075 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:27:05,075 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:27:05,075 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:27:05,076 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:27:05,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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) [2022-07-13 03:27:05,100 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-13 03:27:05,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:05,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:05,111 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:27:05,112 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:05,112 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:27:05,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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) [2022-07-13 03:27:05,128 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-13 03:27:05,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:05,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:05,131 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:27:05,131 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:05,136 INFO L752 eck$LassoCheckResult]: Stem: 114#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); 48#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 87#L29true assume !(0 == base2flt_~m#1 % 4294967296); 111#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 62#L57-2true [2022-07-13 03:27:05,137 INFO L754 eck$LassoCheckResult]: Loop: 62#L57-2true assume !false; 46#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 99#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 62#L57-2true [2022-07-13 03:27:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2022-07-13 03:27:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:05,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861528003] [2022-07-13 03:27:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:05,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:05,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861528003] [2022-07-13 03:27:05,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861528003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:27:05,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:27:05,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:27:05,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108423286] [2022-07-13 03:27:05,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:27:05,328 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2022-07-13 03:27:05,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:05,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144876079] [2022-07-13 03:27:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:05,358 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:05,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:05,423 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:05,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:05,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:05,424 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:05,424 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:05,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:05,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:05,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2022-07-13 03:27:05,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:05,425 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:05,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:05,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:05,526 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:05,527 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:05,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:05,530 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) [2022-07-13 03:27:05,531 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 [2022-07-13 03:27:05,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:05,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:05,567 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:27:05,567 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: [] [2022-07-13 03:27:05,572 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 [2022-07-13 03:27:05,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:05,575 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) [2022-07-13 03:27:05,576 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 [2022-07-13 03:27:05,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:05,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:05,620 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 [2022-07-13 03:27:05,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:05,623 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) [2022-07-13 03:27:05,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:05,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:05,651 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 [2022-07-13 03:27:05,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:05,673 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 [2022-07-13 03:27:05,674 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:05,674 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:05,674 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:05,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:05,674 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:05,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:05,674 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:05,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2022-07-13 03:27:05,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:05,675 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:05,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:05,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:05,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:05,770 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:05,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:05,775 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) [2022-07-13 03:27:05,777 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 [2022-07-13 03:27:05,778 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 [2022-07-13 03:27:05,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:05,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:05,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:05,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:05,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:05,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:05,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:05,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:27:05,828 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 [2022-07-13 03:27:05,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:05,830 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) [2022-07-13 03:27:05,831 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 [2022-07-13 03:27:05,838 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 [2022-07-13 03:27:05,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:05,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:05,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:05,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:05,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:05,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:05,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:05,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:05,878 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:05,878 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:05,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:05,881 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) [2022-07-13 03:27:05,881 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 [2022-07-13 03:27:05,924 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:05,924 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:05,924 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:05,925 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-13 03:27:05,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-13 03:27:05,943 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:05,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:05,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:06,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:06,036 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 [2022-07-13 03:27:06,037 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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) [2022-07-13 03:27:06,147 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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 396 states and 717 transitions. Complement of second has 6 states. [2022-07-13 03:27:06,149 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 [2022-07-13 03:27:06,162 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) [2022-07-13 03:27:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2022-07-13 03:27:06,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 476 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-13 03:27:06,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:06,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 476 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:27:06,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:06,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 476 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-13 03:27:06,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:06,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:06,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 396 states and 717 transitions. [2022-07-13 03:27:06,184 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2022-07-13 03:27:06,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 396 states to 127 states and 216 transitions. [2022-07-13 03:27:06,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2022-07-13 03:27:06,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 124 [2022-07-13 03:27:06,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 216 transitions. [2022-07-13 03:27:06,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:06,190 INFO L369 hiAutomatonCegarLoop]: Abstraction has 127 states and 216 transitions. [2022-07-13 03:27:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 216 transitions. [2022-07-13 03:27:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2022-07-13 03:27:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 107 states have internal predecessors, (188), 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) [2022-07-13 03:27:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 188 transitions. [2022-07-13 03:27:06,217 INFO L392 hiAutomatonCegarLoop]: Abstraction has 108 states and 188 transitions. [2022-07-13 03:27:06,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:06,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 03:27:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 03:27:06,221 INFO L87 Difference]: Start difference. First operand 108 states and 188 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) [2022-07-13 03:27:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:06,312 INFO L93 Difference]: Finished difference Result 65 states and 100 transitions. [2022-07-13 03:27:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 03:27:06,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 100 transitions. [2022-07-13 03:27:06,314 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-13 03:27:06,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 65 states and 100 transitions. [2022-07-13 03:27:06,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2022-07-13 03:27:06,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2022-07-13 03:27:06,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 100 transitions. [2022-07-13 03:27:06,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:27:06,319 INFO L369 hiAutomatonCegarLoop]: Abstraction has 65 states and 100 transitions. [2022-07-13 03:27:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 100 transitions. [2022-07-13 03:27:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-07-13 03:27:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 52 states have internal predecessors, (82), 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) [2022-07-13 03:27:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 82 transitions. [2022-07-13 03:27:06,326 INFO L392 hiAutomatonCegarLoop]: Abstraction has 53 states and 82 transitions. [2022-07-13 03:27:06,326 INFO L374 stractBuchiCegarLoop]: Abstraction has 53 states and 82 transitions. [2022-07-13 03:27:06,326 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:27:06,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 82 transitions. [2022-07-13 03:27:06,327 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-13 03:27:06,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:06,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:06,327 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:06,327 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:06,328 INFO L752 eck$LassoCheckResult]: Stem: 795#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); 789#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 775#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 753#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 754#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 790#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 778#L47-3 [2022-07-13 03:27:06,328 INFO L754 eck$LassoCheckResult]: Loop: 778#L47-3 assume !false; 770#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 771#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 778#L47-3 [2022-07-13 03:27:06,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920711, now seen corresponding path program 1 times [2022-07-13 03:27:06,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:06,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157152723] [2022-07-13 03:27:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:06,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,342 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash 153118, now seen corresponding path program 1 times [2022-07-13 03:27:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:06,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111733525] [2022-07-13 03:27:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,354 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 876132888, now seen corresponding path program 1 times [2022-07-13 03:27:06,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:06,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862073941] [2022-07-13 03:27:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:06,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,370 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:06,404 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:06,405 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:06,405 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:06,405 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:06,405 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:06,405 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,405 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:06,405 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:06,405 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2022-07-13 03:27:06,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:06,405 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:06,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:06,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:06,450 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:06,450 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:06,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:06,451 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) [2022-07-13 03:27:06,453 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 [2022-07-13 03:27:06,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:06,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:06,491 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 [2022-07-13 03:27:06,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:06,493 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) [2022-07-13 03:27:06,494 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 [2022-07-13 03:27:06,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:06,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:06,527 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:06,546 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 [2022-07-13 03:27:06,547 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:06,547 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:06,547 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:06,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:06,547 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:06,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:06,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:06,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2022-07-13 03:27:06,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:06,547 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:06,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:06,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:06,621 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:06,621 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:06,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:06,623 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) [2022-07-13 03:27:06,639 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 [2022-07-13 03:27:06,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:06,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:06,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:06,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:06,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:06,647 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 [2022-07-13 03:27:06,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:06,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:06,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:06,661 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:06,662 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:06,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:06,663 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) [2022-07-13 03:27:06,664 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 [2022-07-13 03:27:06,665 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:06,665 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:06,665 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:06,665 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-13 03:27:06,682 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 [2022-07-13 03:27:06,683 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:06,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:06,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:06,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:06,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:06,767 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 [2022-07-13 03:27:06,767 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 82 transitions. cyclomatic complexity: 35 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) [2022-07-13 03:27:06,792 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 82 transitions. cyclomatic complexity: 35. 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 109 states and 171 transitions. Complement of second has 5 states. [2022-07-13 03:27:06,793 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 [2022-07-13 03:27:06,793 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) [2022-07-13 03:27:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2022-07-13 03:27:06,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:27:06,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:06,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:27:06,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:06,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-13 03:27:06,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:06,794 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 171 transitions. [2022-07-13 03:27:06,795 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2022-07-13 03:27:06,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 97 states and 150 transitions. [2022-07-13 03:27:06,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-07-13 03:27:06,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2022-07-13 03:27:06,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 150 transitions. [2022-07-13 03:27:06,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:06,796 INFO L369 hiAutomatonCegarLoop]: Abstraction has 97 states and 150 transitions. [2022-07-13 03:27:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 150 transitions. [2022-07-13 03:27:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 56. [2022-07-13 03:27:06,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 55 states have internal predecessors, (86), 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) [2022-07-13 03:27:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2022-07-13 03:27:06,798 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 86 transitions. [2022-07-13 03:27:06,798 INFO L374 stractBuchiCegarLoop]: Abstraction has 56 states and 86 transitions. [2022-07-13 03:27:06,798 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:27:06,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 86 transitions. [2022-07-13 03:27:06,798 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-13 03:27:06,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:06,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:06,799 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:06,799 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:06,799 INFO L752 eck$LassoCheckResult]: Stem: 1011#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); 1004#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 988#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 989#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 966#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 967#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1005#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 972#L57-5 [2022-07-13 03:27:06,799 INFO L754 eck$LassoCheckResult]: Loop: 972#L57-5 assume !false; 968#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 969#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 972#L57-5 [2022-07-13 03:27:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920737, now seen corresponding path program 1 times [2022-07-13 03:27:06,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:06,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129259805] [2022-07-13 03:27:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:06,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129259805] [2022-07-13 03:27:06,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129259805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:27:06,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:27:06,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:27:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027738335] [2022-07-13 03:27:06,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:27:06,842 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:06,842 INFO L85 PathProgramCache]: Analyzing trace with hash 178877, now seen corresponding path program 1 times [2022-07-13 03:27:06,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:06,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712243165] [2022-07-13 03:27:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:06,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,847 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:06,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:06,880 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:06,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:06,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:06,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:06,880 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:06,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:06,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:06,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2022-07-13 03:27:06,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:06,881 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:06,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:06,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:06,955 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:06,956 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:06,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:06,957 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) [2022-07-13 03:27:06,959 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 [2022-07-13 03:27:06,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:06,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:06,993 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 [2022-07-13 03:27:06,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:06,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,000 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) [2022-07-13 03:27:07,001 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 [2022-07-13 03:27:07,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:07,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:07,039 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:07,045 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 [2022-07-13 03:27:07,045 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:07,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:07,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:07,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:07,045 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:07,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:07,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:07,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2022-07-13 03:27:07,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:07,045 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:07,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,110 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:07,110 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:07,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,113 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) [2022-07-13 03:27:07,114 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 [2022-07-13 03:27:07,115 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 [2022-07-13 03:27:07,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:07,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:07,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:07,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:07,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:07,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:07,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:07,131 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:07,133 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:07,133 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:07,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,136 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) [2022-07-13 03:27:07,137 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 [2022-07-13 03:27:07,138 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:07,138 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:07,138 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:07,138 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-13 03:27:07,156 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 [2022-07-13 03:27:07,157 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:07,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:07,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:07,202 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 [2022-07-13 03:27:07,202 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 86 transitions. cyclomatic complexity: 36 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) [2022-07-13 03:27:07,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 86 transitions. cyclomatic complexity: 36. 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 111 states and 174 transitions. Complement of second has 5 states. [2022-07-13 03:27:07,221 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 [2022-07-13 03:27:07,221 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) [2022-07-13 03:27:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2022-07-13 03:27:07,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:27:07,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:07,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:27:07,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:07,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-13 03:27:07,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:07,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 174 transitions. [2022-07-13 03:27:07,223 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-13 03:27:07,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 99 states and 153 transitions. [2022-07-13 03:27:07,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2022-07-13 03:27:07,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2022-07-13 03:27:07,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 153 transitions. [2022-07-13 03:27:07,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:07,224 INFO L369 hiAutomatonCegarLoop]: Abstraction has 99 states and 153 transitions. [2022-07-13 03:27:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 153 transitions. [2022-07-13 03:27:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 59. [2022-07-13 03:27:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 58 states have internal predecessors, (90), 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) [2022-07-13 03:27:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 90 transitions. [2022-07-13 03:27:07,226 INFO L392 hiAutomatonCegarLoop]: Abstraction has 59 states and 90 transitions. [2022-07-13 03:27:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 03:27:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 03:27:07,226 INFO L87 Difference]: Start difference. First operand 59 states and 90 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) [2022-07-13 03:27:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:07,283 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2022-07-13 03:27:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 03:27:07,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2022-07-13 03:27:07,285 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:27:07,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 61 states and 87 transitions. [2022-07-13 03:27:07,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2022-07-13 03:27:07,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-07-13 03:27:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 87 transitions. [2022-07-13 03:27:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:07,286 INFO L369 hiAutomatonCegarLoop]: Abstraction has 61 states and 87 transitions. [2022-07-13 03:27:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 87 transitions. [2022-07-13 03:27:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-07-13 03:27:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.490566037735849) internal successors, (79), 52 states have internal predecessors, (79), 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) [2022-07-13 03:27:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2022-07-13 03:27:07,288 INFO L392 hiAutomatonCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-07-13 03:27:07,288 INFO L374 stractBuchiCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-07-13 03:27:07,288 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:27:07,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 79 transitions. [2022-07-13 03:27:07,288 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:27:07,288 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:07,288 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:07,289 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:07,289 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:07,289 INFO L752 eck$LassoCheckResult]: Stem: 1336#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); 1307#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 1308#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1340#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1312#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 1313#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1315#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1316#L47-3 assume !false; 1337#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1314#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1326#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret23#1;havoc main_#t~ret23#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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 1333#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1330#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1331#L57-8 [2022-07-13 03:27:07,289 INFO L754 eck$LassoCheckResult]: Loop: 1331#L57-8 assume !false; 1323#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1324#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1331#L57-8 [2022-07-13 03:27:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash 359266186, now seen corresponding path program 1 times [2022-07-13 03:27:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735900037] [2022-07-13 03:27:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:07,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735900037] [2022-07-13 03:27:07,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735900037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:27:07,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:27:07,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 03:27:07,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492600051] [2022-07-13 03:27:07,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:27:07,332 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:07,333 INFO L85 PathProgramCache]: Analyzing trace with hash 283142, now seen corresponding path program 1 times [2022-07-13 03:27:07,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:07,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583974231] [2022-07-13 03:27:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:07,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:07,341 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:07,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:07,384 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:07,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:07,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:07,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:07,384 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:07,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,384 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:07,384 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:07,384 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2022-07-13 03:27:07,384 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:07,384 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:07,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,397 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 [2022-07-13 03:27:07,425 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 [2022-07-13 03:27:07,476 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:07,476 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:07,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,477 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) [2022-07-13 03:27:07,478 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 [2022-07-13 03:27:07,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:07,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:07,524 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 [2022-07-13 03:27:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,525 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) [2022-07-13 03:27:07,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:07,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:07,539 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 [2022-07-13 03:27:07,571 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:07,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:07,576 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:07,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:07,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:07,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:07,576 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:07,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:07,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:07,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2022-07-13 03:27:07,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:07,577 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:07,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,637 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:07,637 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:07,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,638 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) [2022-07-13 03:27:07,639 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 [2022-07-13 03:27:07,641 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 [2022-07-13 03:27:07,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:07,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:07,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:07,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:07,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:07,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:07,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:07,663 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:07,665 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:07,665 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:07,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,666 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) [2022-07-13 03:27:07,667 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 [2022-07-13 03:27:07,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:07,668 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:07,668 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:07,668 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-13 03:27:07,685 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 [2022-07-13 03:27:07,686 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:07,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:07,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:07,737 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 [2022-07-13 03:27:07,737 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 79 transitions. cyclomatic complexity: 31 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) [2022-07-13 03:27:07,753 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 79 transitions. cyclomatic complexity: 31. 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 88 states and 133 transitions. Complement of second has 5 states. [2022-07-13 03:27:07,753 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 [2022-07-13 03:27:07,755 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) [2022-07-13 03:27:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-07-13 03:27:07,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-13 03:27:07,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:07,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 16 letters. Loop has 3 letters. [2022-07-13 03:27:07,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:07,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 13 letters. Loop has 6 letters. [2022-07-13 03:27:07,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:07,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 133 transitions. [2022-07-13 03:27:07,757 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-13 03:27:07,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 76 states and 112 transitions. [2022-07-13 03:27:07,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2022-07-13 03:27:07,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2022-07-13 03:27:07,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 112 transitions. [2022-07-13 03:27:07,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:07,759 INFO L369 hiAutomatonCegarLoop]: Abstraction has 76 states and 112 transitions. [2022-07-13 03:27:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 112 transitions. [2022-07-13 03:27:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2022-07-13 03:27:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 55 states have internal predecessors, (83), 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) [2022-07-13 03:27:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2022-07-13 03:27:07,768 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 83 transitions. [2022-07-13 03:27:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 03:27:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 03:27:07,771 INFO L87 Difference]: Start difference. First operand 56 states and 83 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) [2022-07-13 03:27:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:07,798 INFO L93 Difference]: Finished difference Result 58 states and 84 transitions. [2022-07-13 03:27:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 03:27:07,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 84 transitions. [2022-07-13 03:27:07,800 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-13 03:27:07,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 57 states and 83 transitions. [2022-07-13 03:27:07,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2022-07-13 03:27:07,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2022-07-13 03:27:07,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 83 transitions. [2022-07-13 03:27:07,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:07,801 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-07-13 03:27:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 83 transitions. [2022-07-13 03:27:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-07-13 03:27:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 55 states have internal predecessors, (82), 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) [2022-07-13 03:27:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2022-07-13 03:27:07,803 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-07-13 03:27:07,803 INFO L374 stractBuchiCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-07-13 03:27:07,803 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 03:27:07,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 82 transitions. [2022-07-13 03:27:07,803 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-13 03:27:07,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:07,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:07,804 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:07,804 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:07,804 INFO L752 eck$LassoCheckResult]: Stem: 1660#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); 1628#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 1629#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1664#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1634#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 1635#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1637#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1638#L47-3 assume !false; 1662#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1650#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1651#L47-3 assume !false; 1661#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1636#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1653#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret23#1;havoc main_#t~ret23#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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 1657#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1654#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1656#L47-5 [2022-07-13 03:27:07,804 INFO L754 eck$LassoCheckResult]: Loop: 1656#L47-5 assume !false; 1659#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1667#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1656#L47-5 [2022-07-13 03:27:07,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1105339009, now seen corresponding path program 1 times [2022-07-13 03:27:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:07,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903108686] [2022-07-13 03:27:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903108686] [2022-07-13 03:27:07,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903108686] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 03:27:07,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914029112] [2022-07-13 03:27:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:07,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:27:07,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:07,832 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 03:27:07,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 03:27:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:07,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:07,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:07,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 03:27:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:07,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914029112] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 03:27:07,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 03:27:07,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 03:27:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402236448] [2022-07-13 03:27:07,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 03:27:07,918 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 257383, now seen corresponding path program 1 times [2022-07-13 03:27:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391525270] [2022-07-13 03:27:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:07,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:07,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:07,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:07,941 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:07,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:07,942 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:07,942 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:07,942 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:07,942 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,942 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:07,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:07,942 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2022-07-13 03:27:07,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:07,942 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:07,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:07,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:07,991 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:07,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,000 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) [2022-07-13 03:27:08,001 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 [2022-07-13 03:27:08,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:08,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:08,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:08,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,053 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) [2022-07-13 03:27:08,054 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 [2022-07-13 03:27:08,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:08,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:08,080 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:08,082 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 [2022-07-13 03:27:08,082 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:08,082 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:08,082 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:08,082 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:08,082 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:08,083 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:08,083 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:08,083 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2022-07-13 03:27:08,083 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:08,083 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:08,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:08,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:08,140 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:08,140 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:08,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,142 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) [2022-07-13 03:27:08,143 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 [2022-07-13 03:27:08,144 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 [2022-07-13 03:27:08,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:08,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:08,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:08,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:08,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:08,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:08,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:08,166 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:08,167 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:08,167 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:08,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,169 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) [2022-07-13 03:27:08,170 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 [2022-07-13 03:27:08,171 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:08,171 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:08,171 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:08,171 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-13 03:27:08,186 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 [2022-07-13 03:27:08,187 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:08,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:08,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:08,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:08,272 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 [2022-07-13 03:27:08,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 82 transitions. cyclomatic complexity: 31 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) [2022-07-13 03:27:08,291 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 82 transitions. cyclomatic complexity: 31. 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 92 states and 137 transitions. Complement of second has 5 states. [2022-07-13 03:27:08,291 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 [2022-07-13 03:27:08,293 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) [2022-07-13 03:27:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-07-13 03:27:08,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 16 letters. Loop has 3 letters. [2022-07-13 03:27:08,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:08,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 19 letters. Loop has 3 letters. [2022-07-13 03:27:08,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:08,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 16 letters. Loop has 6 letters. [2022-07-13 03:27:08,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:08,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2022-07-13 03:27:08,297 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:27:08,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 80 states and 116 transitions. [2022-07-13 03:27:08,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2022-07-13 03:27:08,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2022-07-13 03:27:08,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 116 transitions. [2022-07-13 03:27:08,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:08,298 INFO L369 hiAutomatonCegarLoop]: Abstraction has 80 states and 116 transitions. [2022-07-13 03:27:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 116 transitions. [2022-07-13 03:27:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2022-07-13 03:27:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 58 states have internal predecessors, (86), 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) [2022-07-13 03:27:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2022-07-13 03:27:08,299 INFO L392 hiAutomatonCegarLoop]: Abstraction has 59 states and 86 transitions. [2022-07-13 03:27:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 03:27:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 03:27:08,300 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-07-13 03:27:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:08,370 INFO L93 Difference]: Finished difference Result 113 states and 158 transitions. [2022-07-13 03:27:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 03:27:08,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 158 transitions. [2022-07-13 03:27:08,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:27:08,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 107 states and 152 transitions. [2022-07-13 03:27:08,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2022-07-13 03:27:08,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2022-07-13 03:27:08,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 152 transitions. [2022-07-13 03:27:08,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:08,372 INFO L369 hiAutomatonCegarLoop]: Abstraction has 107 states and 152 transitions. [2022-07-13 03:27:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 152 transitions. [2022-07-13 03:27:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2022-07-13 03:27:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 73 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) [2022-07-13 03:27:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-07-13 03:27:08,373 INFO L392 hiAutomatonCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-13 03:27:08,373 INFO L374 stractBuchiCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-13 03:27:08,373 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 03:27:08,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 108 transitions. [2022-07-13 03:27:08,374 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:27:08,374 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:08,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:08,374 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:08,374 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:08,375 INFO L752 eck$LassoCheckResult]: Stem: 2154#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); 2119#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2120#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2156#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2126#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2127#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2128#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2129#L47-3 assume !false; 2163#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2172#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2132#L73-1 assume 0 == base2flt_~m#1 || 0 == ~bitwiseComplement(16777216);base2flt_~m#1 := 0; 2109#L76-15 assume !((1 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))) || ((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 1 == 16777216 * (128 + base2flt_~e#1))); 2113#L77-9 assume !(0 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))); 2114#L77-11 assume !((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 0 == 16777216 * (128 + base2flt_~e#1)); 2161#L77-13 assume !(base2flt_~m#1 >= 0 && 16777216 * (128 + base2flt_~e#1) >= 0);base2flt_~res~0#1 := base2flt_#t~nondet5#1;havoc base2flt_#t~nondet5#1; 2124#L77-15 base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2125#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2140#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret23#1;havoc main_#t~ret23#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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2146#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2106#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2107#L80-2 main_#t~ret24#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret24#1;havoc main_#t~ret24#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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2155#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2121#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 2122#L47-7 [2022-07-13 03:27:08,376 INFO L754 eck$LassoCheckResult]: Loop: 2122#L47-7 assume !false; 2111#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2112#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 2122#L47-7 [2022-07-13 03:27:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash 488953666, now seen corresponding path program 1 times [2022-07-13 03:27:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352070488] [2022-07-13 03:27:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:08,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:08,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352070488] [2022-07-13 03:27:08,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352070488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:27:08,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:27:08,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 03:27:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324581033] [2022-07-13 03:27:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:27:08,420 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash 361648, now seen corresponding path program 1 times [2022-07-13 03:27:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:08,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881397997] [2022-07-13 03:27:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:08,424 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:08,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:08,449 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:08,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:08,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:08,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:08,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:08,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:08,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:08,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2022-07-13 03:27:08,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:08,450 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:08,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:08,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:08,489 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:08,490 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:08,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,491 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) [2022-07-13 03:27:08,492 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 [2022-07-13 03:27:08,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:08,494 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:08,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-07-13 03:27:08,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,525 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2022-07-13 03:27:08,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-13 03:27:08,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:08,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:08,585 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:08,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:08,591 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:08,591 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:08,591 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:08,591 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:08,591 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:08,591 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,591 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:08,591 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:08,591 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2022-07-13 03:27:08,591 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:08,591 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:08,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:08,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:08,649 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:08,649 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,651 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) [2022-07-13 03:27:08,652 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 [2022-07-13 03:27:08,654 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 [2022-07-13 03:27:08,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:08,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:08,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:08,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:08,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:08,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:08,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:08,674 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:08,676 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:08,676 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:08,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:08,678 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) [2022-07-13 03:27:08,704 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 [2022-07-13 03:27:08,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:08,711 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:08,712 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:08,712 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-13 03:27:08,727 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 [2022-07-13 03:27:08,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:08,753 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 [2022-07-13 03:27:08,754 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:08,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:08,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:08,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:08,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:08,843 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 [2022-07-13 03:27:08,844 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 108 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-07-13 03:27:08,849 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 108 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 78 states and 112 transitions. Complement of second has 4 states. [2022-07-13 03:27:08,850 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 [2022-07-13 03:27:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-07-13 03:27:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2022-07-13 03:27:08,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 23 letters. Loop has 3 letters. [2022-07-13 03:27:08,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:08,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 26 letters. Loop has 3 letters. [2022-07-13 03:27:08,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:08,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 23 letters. Loop has 6 letters. [2022-07-13 03:27:08,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:08,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 112 transitions. [2022-07-13 03:27:08,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:27:08,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 71 states and 104 transitions. [2022-07-13 03:27:08,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2022-07-13 03:27:08,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-07-13 03:27:08,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 104 transitions. [2022-07-13 03:27:08,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:08,854 INFO L369 hiAutomatonCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-07-13 03:27:08,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 104 transitions. [2022-07-13 03:27:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-13 03:27:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 70 states have internal predecessors, (104), 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) [2022-07-13 03:27:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2022-07-13 03:27:08,856 INFO L392 hiAutomatonCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-07-13 03:27:08,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:08,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 03:27:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 03:27:08,857 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-07-13 03:27:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:08,917 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2022-07-13 03:27:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 03:27:08,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 129 transitions. [2022-07-13 03:27:08,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:27:08,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 91 states and 129 transitions. [2022-07-13 03:27:08,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-07-13 03:27:08,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-07-13 03:27:08,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 129 transitions. [2022-07-13 03:27:08,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:08,920 INFO L369 hiAutomatonCegarLoop]: Abstraction has 91 states and 129 transitions. [2022-07-13 03:27:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 129 transitions. [2022-07-13 03:27:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2022-07-13 03:27:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 75 states have internal predecessors, (110), 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) [2022-07-13 03:27:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 110 transitions. [2022-07-13 03:27:08,922 INFO L392 hiAutomatonCegarLoop]: Abstraction has 76 states and 110 transitions. [2022-07-13 03:27:08,922 INFO L374 stractBuchiCegarLoop]: Abstraction has 76 states and 110 transitions. [2022-07-13 03:27:08,922 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-13 03:27:08,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 110 transitions. [2022-07-13 03:27:08,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:27:08,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:08,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:08,924 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:08,924 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:08,924 INFO L752 eck$LassoCheckResult]: Stem: 2566#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); 2532#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#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_~sb~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~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2533#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2568#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2536#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2537#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2540#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2541#L47-3 assume !false; 2576#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2585#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2586#L73-1 assume 0 == base2flt_~m#1 || 0 == ~bitwiseComplement(16777216);base2flt_~m#1 := 0; 2596#L76-15 assume !((1 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))) || ((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 1 == 16777216 * (128 + base2flt_~e#1))); 2595#L77-9 assume !(0 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))); 2594#L77-11 assume !((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 0 == 16777216 * (128 + base2flt_~e#1)); 2575#L77-13 assume base2flt_~m#1 >= 0 && 16777216 * (128 + base2flt_~e#1) >= 0;abs_77 := (if base2flt_~m#1 < 16777216 * (128 + base2flt_~e#1) then 16777216 * (128 + base2flt_~e#1) else base2flt_~m#1);assume base2flt_~m#1 >= 0 && 16777216 * (128 + base2flt_~e#1) >= 0;assume base2flt_~res~0#1 >= abs_77; 2538#L77-15 base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2539#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2554#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret23#1;havoc main_#t~ret23#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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2558#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2524#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2525#L80-2 main_#t~ret24#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret24#1;havoc main_#t~ret24#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_#t~nondet4#1, base2flt_#t~nondet5#1, 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; 2567#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2534#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2535#L57-11 [2022-07-13 03:27:08,925 INFO L754 eck$LassoCheckResult]: Loop: 2535#L57-11 assume !false; 2542#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 2543#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 2535#L57-11 [2022-07-13 03:27:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash -191104678, now seen corresponding path program 1 times [2022-07-13 03:27:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:08,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051501633] [2022-07-13 03:27:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:08,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051501633] [2022-07-13 03:27:08,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051501633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:27:08,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:27:08,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 03:27:08,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051363748] [2022-07-13 03:27:08,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:27:08,969 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 387407, now seen corresponding path program 1 times [2022-07-13 03:27:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:08,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223228481] [2022-07-13 03:27:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:08,974 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:08,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:08,996 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:08,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:08,997 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:08,997 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:08,997 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:08,997 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:08,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:08,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:08,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2022-07-13 03:27:08,997 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:08,998 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:08,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:09,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:09,070 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:09,070 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:09,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:09,072 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) [2022-07-13 03:27:09,072 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 [2022-07-13 03:27:09,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:09,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:09,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:09,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:09,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:09,120 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) [2022-07-13 03:27:09,120 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 [2022-07-13 03:27:09,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:09,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:09,155 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:09,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:09,158 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:09,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:09,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:09,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:09,158 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:09,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:09,158 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:09,158 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:09,158 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2022-07-13 03:27:09,158 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:09,158 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:09,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:09,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:09,236 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:09,236 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:09,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:09,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:09,252 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2022-07-13 03:27:09,272 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 [2022-07-13 03:27:09,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:09,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:09,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:09,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:09,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:09,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:09,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:09,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-13 03:27:09,295 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:09,297 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:09,297 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:09,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:09,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:09,299 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) [2022-07-13 03:27:09,300 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 [2022-07-13 03:27:09,301 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:09,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:09,302 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:09,302 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-13 03:27:09,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:09,325 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:09,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:09,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:27:09,409 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 [2022-07-13 03:27:09,409 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 110 transitions. cyclomatic complexity: 38 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-07-13 03:27:09,414 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 110 transitions. cyclomatic complexity: 38. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 79 states and 114 transitions. Complement of second has 4 states. [2022-07-13 03:27:09,414 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 [2022-07-13 03:27:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-07-13 03:27:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2022-07-13 03:27:09,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 23 letters. Loop has 3 letters. [2022-07-13 03:27:09,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:09,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 26 letters. Loop has 3 letters. [2022-07-13 03:27:09,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:09,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 23 letters. Loop has 6 letters. [2022-07-13 03:27:09,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:09,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 114 transitions. [2022-07-13 03:27:09,416 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:27:09,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 0 states and 0 transitions. [2022-07-13 03:27:09,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:27:09,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:27:09,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:27:09,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:27:09,416 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:09,416 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:09,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 03:27:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 03:27:09,417 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-07-13 03:27:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:09,417 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-13 03:27:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 03:27:09,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-13 03:27:09,417 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:27:09,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 03:27:09,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:27:09,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:27:09,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:27:09,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:27:09,418 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:09,418 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:09,418 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:09,418 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-13 03:27:09,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:27:09,418 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:27:09,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:27:09,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:27:09 BoogieIcfgContainer [2022-07-13 03:27:09,423 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:27:09,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:27:09,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:27:09,424 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:27:09,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:27:05" (3/4) ... [2022-07-13 03:27:09,426 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:27:09,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:27:09,427 INFO L158 Benchmark]: Toolchain (without parser) took 5358.43ms. Allocated memory was 107.0MB in the beginning and 201.3MB in the end (delta: 94.4MB). Free memory was 80.4MB in the beginning and 120.5MB in the end (delta: -40.1MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2022-07-13 03:27:09,427 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:27:09,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 107.0MB. Free memory was 80.2MB in the beginning and 79.2MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 03:27:09,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.64ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 75.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:27:09,427 INFO L158 Benchmark]: Boogie Preprocessor took 37.47ms. Allocated memory is still 107.0MB. Free memory was 75.9MB in the beginning and 73.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:27:09,428 INFO L158 Benchmark]: RCFGBuilder took 608.18ms. Allocated memory was 107.0MB in the beginning and 167.8MB in the end (delta: 60.8MB). Free memory was 73.6MB in the beginning and 139.3MB in the end (delta: -65.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-07-13 03:27:09,428 INFO L158 Benchmark]: BuchiAutomizer took 4412.71ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 139.3MB in the beginning and 121.5MB in the end (delta: 17.7MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2022-07-13 03:27:09,428 INFO L158 Benchmark]: Witness Printer took 2.45ms. Allocated memory is still 201.3MB. Free memory was 121.5MB in the beginning and 120.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:27:09,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 107.0MB. Free memory was 80.2MB in the beginning and 79.2MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.64ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 75.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.47ms. Allocated memory is still 107.0MB. Free memory was 75.9MB in the beginning and 73.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.18ms. Allocated memory was 107.0MB in the beginning and 167.8MB in the end (delta: 60.8MB). Free memory was 73.6MB in the beginning and 139.3MB in the end (delta: -65.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 4412.71ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 139.3MB in the beginning and 121.5MB in the end (delta: 17.7MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * Witness Printer took 2.45ms. Allocated memory is still 201.3MB. Free memory was 121.5MB in the beginning and 120.5MB in the end (delta: 1.0MB). 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 + 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 + 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 + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 210 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 882 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 875 mSDsluCounter, 1369 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 318 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 1051 mSDtfsCounter, 402 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: 37ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-13 03:27:09,466 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 [2022-07-13 03:27:09,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-07-13 03:27:09,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-13 03:27:10,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE