./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2a.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_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:27:09,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:27:09,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:27:09,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:27:09,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:27:09,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:27:09,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:27:09,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:27:09,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:27:09,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:27:09,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:27:09,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:27:09,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:27:09,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:27:09,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:27:09,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:27:09,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:27:09,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:27:09,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:27:09,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:27:09,965 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:27:09,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:27:09,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:27:09,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:27:09,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:27:09,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:27:09,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:27:09,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:27:09,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:27:09,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:27:09,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:27:09,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:27:09,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:27:09,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:27:09,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:27:09,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:27:09,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:27:09,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:27:09,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:27:09,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:27:09,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:27:09,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:27:09,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-13 03:27:10,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:27:10,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:27:10,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:27:10,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:27:10,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:27:10,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:27:10,033 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:27:10,034 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:27:10,034 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:27:10,035 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:27:10,035 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:27:10,035 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:27:10,035 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:27:10,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:27:10,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 03:27:10,036 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:27:10,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:27:10,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 03:27:10,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:27:10,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:27:10,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:27:10,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:27:10,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 03:27:10,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:27:10,039 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:27:10,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:27:10,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:27:10,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:27:10,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:27:10,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:27:10,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:27:10,041 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:27:10,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b [2022-07-13 03:27:10,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:27:10,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:27:10,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:27:10,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:27:10,323 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:27:10,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2022-07-13 03:27:10,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8184a7f3f/1d3894fba40f4eb2ba4768bdcbff0c99/FLAG65f0b7fc2 [2022-07-13 03:27:10,814 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:27:10,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2022-07-13 03:27:10,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8184a7f3f/1d3894fba40f4eb2ba4768bdcbff0c99/FLAG65f0b7fc2 [2022-07-13 03:27:11,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8184a7f3f/1d3894fba40f4eb2ba4768bdcbff0c99 [2022-07-13 03:27:11,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:27:11,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:27:11,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:27:11,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:27:11,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:27:11,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8687d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11, skipping insertion in model container [2022-07-13 03:27:11,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:27:11,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:27:11,405 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_4-2a.c.cil.c[755,768] [2022-07-13 03:27:11,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:27:11,496 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:27:11,511 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_4-2a.c.cil.c[755,768] [2022-07-13 03:27:11,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:27:11,577 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:27:11,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11 WrapperNode [2022-07-13 03:27:11,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:27:11,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:27:11,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:27:11,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:27:11,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,654 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 489 [2022-07-13 03:27:11,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:27:11,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:27:11,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:27:11,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:27:11,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:27:11,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:27:11,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:27:11,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:27:11,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (1/1) ... [2022-07-13 03:27:11,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:11,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:11,769 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 03:27:11,781 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 03:27:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 03:27:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 03:27:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:27:11,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:27:11,903 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:27:11,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:27:12,439 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:27:12,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:27:12,448 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 03:27:12,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:27:12 BoogieIcfgContainer [2022-07-13 03:27:12,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:27:12,452 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:27:12,452 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:27:12,455 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:27:12,455 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:27:12,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:27:11" (1/3) ... [2022-07-13 03:27:12,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16155f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:27:12, skipping insertion in model container [2022-07-13 03:27:12,457 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:27:12,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:27:11" (2/3) ... [2022-07-13 03:27:12,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16155f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:27:12, skipping insertion in model container [2022-07-13 03:27:12,458 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:27:12,458 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:27:12" (3/3) ... [2022-07-13 03:27:12,459 INFO L354 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2022-07-13 03:27:12,513 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:27:12,513 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:27:12,513 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:27:12,514 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:27:12,514 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:27:12,514 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:27:12,514 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:27:12,514 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:27:12,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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 03:27:12,542 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-13 03:27:12,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:12,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:12,549 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:27:12,549 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:12,549 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:27:12,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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 03:27:12,558 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-13 03:27:12,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:12,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:12,559 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:27:12,559 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:12,565 INFO L752 eck$LassoCheckResult]: Stem: 138#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(24, 2);call #Ultimate.allocInit(12, 3); 46#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_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#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_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#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; 80#L30true assume !(0 == base2flt_~m#1 % 4294967296); 146#L36true assume !(base2flt_~m#1 % 4294967296 < 16777216); 22#L58-2true [2022-07-13 03:27:12,566 INFO L754 eck$LassoCheckResult]: Loop: 22#L58-2true assume !false; 120#L59true assume base2flt_~m#1 % 4294967296 >= 33554432; 152#L60true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 22#L58-2true [2022-07-13 03:27:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2022-07-13 03:27:12,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:12,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094141022] [2022-07-13 03:27:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:12,713 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 03:27:12,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:27:12,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094141022] [2022-07-13 03:27:12,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094141022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:27:12,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:27:12,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:27:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773549979] [2022-07-13 03:27:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:27:12,720 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:27:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2022-07-13 03:27:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:12,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115688622] [2022-07-13 03:27:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:12,732 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:12,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:12,794 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:12,795 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:12,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:12,796 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:12,796 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:12,796 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:12,796 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:12,796 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:12,796 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2022-07-13 03:27:12,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:12,797 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:12,810 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 03:27:12,819 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 03:27:12,924 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:12,925 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:12,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:12,933 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 03:27:12,934 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 03:27:12,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:12,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:12,987 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:27:12,987 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 03:27:12,995 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 03:27:12,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:12,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:12,999 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 03:27:13,000 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 03:27:13,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:13,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:13,061 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 03:27:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:13,064 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 03:27:13,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:13,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:13,080 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 03:27:13,120 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:13,127 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 03:27:13,128 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:13,128 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:13,128 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:13,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:13,128 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:13,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:13,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:13,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2022-07-13 03:27:13,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:13,129 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:13,129 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 03:27:13,136 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 03:27:13,237 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:13,241 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:13,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:13,244 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 03:27:13,245 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 03:27:13,247 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 03:27:13,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:13,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:13,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:13,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:13,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:13,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:13,260 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:13,275 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:27:13,299 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 03:27:13,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:13,304 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 03:27:13,309 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 03:27:13,314 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 03:27:13,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:13,315 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:13,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:13,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:13,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:13,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:13,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:13,332 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:13,336 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:13,336 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:13,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:13,343 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 03:27:13,348 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:13,348 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:13,348 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:13,349 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 03:27:13,366 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 03:27:13,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:13,379 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:13,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:13,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:13,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:13,457 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 03:27:13,487 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 03:27:13,489 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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 03:27:13,580 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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 485 states and 844 transitions. Complement of second has 6 states. [2022-07-13 03:27:13,583 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 03:27:13,588 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 03:27:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2022-07-13 03:27:13,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 552 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-13 03:27:13,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:13,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 552 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:27:13,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:13,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 552 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-13 03:27:13,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:13,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 485 states and 844 transitions. [2022-07-13 03:27:13,600 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2022-07-13 03:27:13,605 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 485 states to 89 states and 146 transitions. [2022-07-13 03:27:13,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-07-13 03:27:13,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2022-07-13 03:27:13,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 146 transitions. [2022-07-13 03:27:13,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:13,607 INFO L369 hiAutomatonCegarLoop]: Abstraction has 89 states and 146 transitions. [2022-07-13 03:27:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 146 transitions. [2022-07-13 03:27:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2022-07-13 03:27:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 69 states have internal predecessors, (118), 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 03:27:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 118 transitions. [2022-07-13 03:27:13,634 INFO L392 hiAutomatonCegarLoop]: Abstraction has 70 states and 118 transitions. [2022-07-13 03:27:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:27:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 03:27:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 03:27:13,638 INFO L87 Difference]: Start difference. First operand 70 states and 118 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 03:27:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:27:13,689 INFO L93 Difference]: Finished difference Result 39 states and 57 transitions. [2022-07-13 03:27:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 03:27:13,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 57 transitions. [2022-07-13 03:27:13,691 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:27:13,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 57 transitions. [2022-07-13 03:27:13,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-07-13 03:27:13,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2022-07-13 03:27:13,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 57 transitions. [2022-07-13 03:27:13,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:27:13,692 INFO L369 hiAutomatonCegarLoop]: Abstraction has 39 states and 57 transitions. [2022-07-13 03:27:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 57 transitions. [2022-07-13 03:27:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-07-13 03:27:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:27:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 48 transitions. [2022-07-13 03:27:13,695 INFO L392 hiAutomatonCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-07-13 03:27:13,695 INFO L374 stractBuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-07-13 03:27:13,695 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:27:13,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 48 transitions. [2022-07-13 03:27:13,696 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:27:13,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:13,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:13,696 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:13,696 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:13,697 INFO L752 eck$LassoCheckResult]: Stem: 822#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(24, 2);call #Ultimate.allocInit(12, 3); 811#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_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#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_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#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; 800#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 801#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 816#L81 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 := 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; 825#L30-1 assume !(0 == base2flt_~m#1 % 4294967296); 820#L36-1 assume base2flt_~m#1 % 4294967296 < 16777216; 798#L48-3 [2022-07-13 03:27:13,697 INFO L754 eck$LassoCheckResult]: Loop: 798#L48-3 assume !false; 819#L39-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 797#L48-2 assume base2flt_~m#1 % 4294967296 < 16777216; 798#L48-3 [2022-07-13 03:27:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920711, now seen corresponding path program 1 times [2022-07-13 03:27:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499171622] [2022-07-13 03:27:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:13,709 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:13,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash 153118, now seen corresponding path program 1 times [2022-07-13 03:27:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:13,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261037365] [2022-07-13 03:27:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:13,727 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:13,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 876132888, now seen corresponding path program 1 times [2022-07-13 03:27:13,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646326188] [2022-07-13 03:27:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:13,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:13,749 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:13,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:13,808 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:13,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:13,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:13,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:13,809 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:13,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:13,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:13,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2022-07-13 03:27:13,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:13,810 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:13,812 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 03:27:13,817 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 03:27:13,887 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:13,888 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:13,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:13,890 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 03:27:13,891 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 03:27:13,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:13,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:13,950 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 03:27:13,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:13,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:13,953 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 03:27:13,971 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 03:27:13,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:13,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:14,024 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:14,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-07-13 03:27:14,030 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 03:27:14,031 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:14,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:14,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:14,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:14,031 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:14,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:14,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:14,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2022-07-13 03:27:14,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:14,032 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:14,033 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 03:27:14,042 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 03:27:14,114 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:14,114 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,128 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 03:27:14,152 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 03:27:14,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:14,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:14,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:14,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:14,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:14,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:14,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:14,163 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 03:27:14,172 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:14,184 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:14,184 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:14,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,188 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 03:27:14,189 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 03:27:14,199 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:14,199 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:14,199 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:14,199 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 03:27:14,230 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 03:27:14,231 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:14,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:14,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:14,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:14,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:14,325 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 03:27:14,326 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 03:27:14,326 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 48 transitions. cyclomatic complexity: 19 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 03:27:14,348 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 48 transitions. cyclomatic complexity: 19. 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 69 states and 103 transitions. Complement of second has 5 states. [2022-07-13 03:27:14,349 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 03:27:14,350 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 03:27:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-07-13 03:27:14,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:27:14,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:14,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:27:14,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:14,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-13 03:27:14,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:14,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 103 transitions. [2022-07-13 03:27:14,352 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-13 03:27:14,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 57 states and 82 transitions. [2022-07-13 03:27:14,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-07-13 03:27:14,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-07-13 03:27:14,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2022-07-13 03:27:14,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:14,354 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 82 transitions. [2022-07-13 03:27:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2022-07-13 03:27:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2022-07-13 03:27:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:27:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2022-07-13 03:27:14,359 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-13 03:27:14,359 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-13 03:27:14,360 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:27:14,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 52 transitions. [2022-07-13 03:27:14,360 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-13 03:27:14,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:14,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:14,361 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:14,361 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:14,361 INFO L752 eck$LassoCheckResult]: Stem: 978#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(24, 2);call #Ultimate.allocInit(12, 3); 965#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_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#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_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#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; 954#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 955#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 970#L81 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 := 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; 981#L30-1 assume !(0 == base2flt_~m#1 % 4294967296); 975#L36-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 964#L58-5 [2022-07-13 03:27:14,361 INFO L754 eck$LassoCheckResult]: Loop: 964#L58-5 assume !false; 972#L59-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 962#L60-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 964#L58-5 [2022-07-13 03:27:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920737, now seen corresponding path program 1 times [2022-07-13 03:27:14,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:14,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922251626] [2022-07-13 03:27:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:14,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:14,381 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:14,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash 178877, now seen corresponding path program 1 times [2022-07-13 03:27:14,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:14,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544165504] [2022-07-13 03:27:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:14,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:14,414 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:14,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 876933213, now seen corresponding path program 1 times [2022-07-13 03:27:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:14,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23256812] [2022-07-13 03:27:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:14,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:14,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:14,474 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:14,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:14,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:14,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:14,475 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:14,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:14,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:14,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2022-07-13 03:27:14,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:14,475 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:14,476 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 03:27:14,482 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 03:27:14,576 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:14,576 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:14,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,578 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 03:27:14,579 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 03:27:14,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:14,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:14,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:27:14,618 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 03:27:14,624 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 03:27:14,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,626 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 03:27:14,627 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 03:27:14,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:14,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:14,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-13 03:27:14,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,704 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 03:27:14,705 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 03:27:14,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:14,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:14,732 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:14,735 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 03:27:14,735 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:14,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:14,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:14,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:14,735 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:14,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:14,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:14,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2022-07-13 03:27:14,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:14,736 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:14,736 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 03:27:14,742 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 03:27:14,819 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:14,819 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,824 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 03:27:14,825 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 03:27:14,829 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 03:27:14,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:14,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:14,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:14,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:14,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:14,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:14,837 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:14,839 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:27:14,855 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 03:27:14,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,857 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 03:27:14,857 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 03:27:14,859 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 03:27:14,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:14,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:14,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:14,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:14,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:14,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:14,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:14,871 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:14,873 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:14,873 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:14,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:14,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:14,875 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 03:27:14,876 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 03:27:14,876 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:14,877 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:14,877 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:14,877 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 03:27:14,892 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 03:27:14,893 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:14,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:14,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:14,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:14,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:14,936 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 03:27:14,936 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 03:27:14,936 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 20 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 03:27:14,967 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 20. 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 71 states and 106 transitions. Complement of second has 5 states. [2022-07-13 03:27:14,967 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 03:27:14,968 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 03:27:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-07-13 03:27:14,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:27:14,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:14,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:27:14,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:14,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-13 03:27:14,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:14,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 106 transitions. [2022-07-13 03:27:14,969 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:27:14,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 59 states and 85 transitions. [2022-07-13 03:27:14,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-07-13 03:27:14,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2022-07-13 03:27:14,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 85 transitions. [2022-07-13 03:27:14,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:14,970 INFO L369 hiAutomatonCegarLoop]: Abstraction has 59 states and 85 transitions. [2022-07-13 03:27:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 85 transitions. [2022-07-13 03:27:14,985 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 03:27:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2022-07-13 03:27:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 38 states have internal predecessors, (56), 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 03:27:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2022-07-13 03:27:14,996 INFO L392 hiAutomatonCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-07-13 03:27:14,996 INFO L374 stractBuchiCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-07-13 03:27:14,996 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:27:14,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 56 transitions. [2022-07-13 03:27:14,997 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:27:14,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:14,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:14,997 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:14,997 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:14,997 INFO L752 eck$LassoCheckResult]: Stem: 1138#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(24, 2);call #Ultimate.allocInit(12, 3); 1123#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_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#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_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#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; 1111#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1112#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 1124#L81 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 := 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; 1141#L30-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1120#L80-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1115#L81-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~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_~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; 1105#L30-2 assume !(0 == base2flt_~m#1 % 4294967296); 1106#L36-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1125#L58-8 [2022-07-13 03:27:14,997 INFO L754 eck$LassoCheckResult]: Loop: 1125#L58-8 assume !false; 1139#L59-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1140#L60-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1125#L58-8 [2022-07-13 03:27:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash 877203369, now seen corresponding path program 1 times [2022-07-13 03:27:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:14,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056943900] [2022-07-13 03:27:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,023 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,034 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 03:27:15,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 283142, now seen corresponding path program 1 times [2022-07-13 03:27:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:15,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296794364] [2022-07-13 03:27:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,044 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:15,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176930, now seen corresponding path program 1 times [2022-07-13 03:27:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:15,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615301874] [2022-07-13 03:27:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,068 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:15,117 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:15,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:15,117 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:15,117 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:15,117 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:15,117 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:15,117 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:15,117 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2022-07-13 03:27:15,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:15,118 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:15,118 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 03:27:15,123 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 03:27:15,195 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:15,195 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,200 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 03:27:15,202 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 03:27:15,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:15,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:15,249 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 03:27:15,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,252 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 03:27:15,253 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 03:27:15,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:15,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:15,300 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:15,303 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 03:27:15,304 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:15,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:15,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:15,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:15,304 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:15,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,304 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:15,304 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:15,304 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2022-07-13 03:27:15,304 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:15,304 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:15,305 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 03:27:15,310 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 03:27:15,392 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:15,393 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:15,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,396 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:27:15,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:27:15,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:15,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:15,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:15,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:15,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:15,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:15,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:15,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-13 03:27:15,427 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:15,429 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:15,429 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,448 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 03:27:15,453 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 03:27:15,453 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:15,453 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:15,454 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:15,454 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 03:27:15,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-07-13 03:27:15,470 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:15,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:15,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:15,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:15,517 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 03:27:15,518 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 03:27:15,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 56 transitions. cyclomatic complexity: 21 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 03:27:15,523 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 56 transitions. cyclomatic complexity: 21. 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) Result 42 states and 60 transitions. Complement of second has 4 states. [2022-07-13 03:27:15,523 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 03:27:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. 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 03:27:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2022-07-13 03:27:15,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:27:15,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:15,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-13 03:27:15,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:15,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-13 03:27:15,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:15,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 60 transitions. [2022-07-13 03:27:15,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:27:15,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 52 transitions. [2022-07-13 03:27:15,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-07-13 03:27:15,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-07-13 03:27:15,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 52 transitions. [2022-07-13 03:27:15,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:27:15,526 INFO L369 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-13 03:27:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 52 transitions. [2022-07-13 03:27:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-13 03:27:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:27:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2022-07-13 03:27:15,528 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-13 03:27:15,528 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-13 03:27:15,528 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 03:27:15,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 52 transitions. [2022-07-13 03:27:15,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:27:15,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:27:15,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:27:15,529 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:27:15,529 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:27:15,529 INFO L752 eck$LassoCheckResult]: Stem: 1276#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(24, 2);call #Ultimate.allocInit(12, 3); 1262#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_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#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_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#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; 1250#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1251#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 1265#L81 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 := 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; 1277#L30-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1259#L80-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1257#L81-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~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_~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; 1244#L30-2 assume !(0 == base2flt_~m#1 % 4294967296); 1245#L36-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1266#L48-5 [2022-07-13 03:27:15,529 INFO L754 eck$LassoCheckResult]: Loop: 1266#L48-5 assume !false; 1279#L39-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1275#L48-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1266#L48-5 [2022-07-13 03:27:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash 877203343, now seen corresponding path program 1 times [2022-07-13 03:27:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:15,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889408785] [2022-07-13 03:27:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 257383, now seen corresponding path program 1 times [2022-07-13 03:27:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482691755] [2022-07-13 03:27:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,551 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:15,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2110977255, now seen corresponding path program 1 times [2022-07-13 03:27:15,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:27:15,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714236439] [2022-07-13 03:27:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:27:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:27:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,564 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:27:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:27:15,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:27:15,594 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:15,594 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:15,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:15,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:15,595 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:27:15,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,595 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:15,595 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:15,595 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2022-07-13 03:27:15,595 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:15,595 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:15,596 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 03:27:15,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:27:15,649 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:15,650 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:27:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,651 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 03:27:15,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:27:15,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:15,669 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 03:27:15,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-07-13 03:27:15,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,690 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 03:27:15,691 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 03:27:15,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:27:15,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:27:15,717 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:27:15,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-07-13 03:27:15,720 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:27:15,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:27:15,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:27:15,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:27:15,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:27:15,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:27:15,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:27:15,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2022-07-13 03:27:15,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:27:15,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:27:15,721 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 03:27:15,730 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 03:27:15,780 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:27:15,780 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:27:15,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,808 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 03:27:15,812 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 03:27:15,815 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 03:27:15,816 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 03:27:15,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:27:15,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:27:15,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:27:15,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:27:15,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:27:15,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:27:15,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:27:15,843 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:27:15,852 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:27:15,852 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:27:15,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:27:15,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:27:15,856 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 03:27:15,857 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 03:27:15,858 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:27:15,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:27:15,859 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:27:15,859 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 03:27:15,876 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 03:27:15,877 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:27:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:27:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:15,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:27:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:27:15,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:27:15,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:27:15,937 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 03:27:15,938 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 03:27:15,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 03:27:15,946 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) Result 40 states and 56 transitions. Complement of second has 4 states. [2022-07-13 03:27:15,946 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 03:27:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 03:27:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-07-13 03:27:15,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:27:15,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:15,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-13 03:27:15,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:15,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-13 03:27:15,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:27:15,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 56 transitions. [2022-07-13 03:27:15,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:27:15,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 0 states and 0 transitions. [2022-07-13 03:27:15,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:27:15,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:27:15,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:27:15,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:27:15,953 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:15,953 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:15,953 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:27:15,953 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 03:27:15,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:27:15,954 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:27:15,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:27:15,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:27:15 BoogieIcfgContainer [2022-07-13 03:27:15,965 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:27:15,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:27:15,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:27:15,966 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:27:15,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:27:12" (3/4) ... [2022-07-13 03:27:15,971 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:27:15,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:27:15,974 INFO L158 Benchmark]: Toolchain (without parser) took 4778.25ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 61.2MB in the beginning and 83.3MB in the end (delta: -22.2MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-07-13 03:27:15,974 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 48.6MB in the beginning and 48.6MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:27:15,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.21ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 61.0MB in the beginning and 94.3MB in the end (delta: -33.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:27:15,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.94ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 90.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 03:27:15,975 INFO L158 Benchmark]: Boogie Preprocessor took 68.46ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 88.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:27:15,976 INFO L158 Benchmark]: RCFGBuilder took 722.55ms. Allocated memory is still 121.6MB. Free memory was 88.4MB in the beginning and 91.1MB in the end (delta: -2.8MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-07-13 03:27:15,976 INFO L158 Benchmark]: BuchiAutomizer took 3513.63ms. Allocated memory is still 121.6MB. Free memory was 90.6MB in the beginning and 83.3MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 03:27:15,976 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 121.6MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:27:15,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 48.6MB in the beginning and 48.6MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.21ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 61.0MB in the beginning and 94.3MB in the end (delta: -33.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.94ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 90.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.46ms. Allocated memory is still 121.6MB. Free memory was 90.8MB in the beginning and 88.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 722.55ms. Allocated memory is still 121.6MB. Free memory was 88.4MB in the beginning and 91.1MB in the end (delta: -2.8MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 3513.63ms. Allocated memory is still 121.6MB. Free memory was 90.6MB in the beginning and 83.3MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 121.6MB. Free memory is still 83.3MB. 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 6 terminating modules (1 trivial, 5 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. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 66 StatesRemovedByMinimization, 4 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 [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 476 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 471 mSDsluCounter, 534 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 482 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp56 ukn100 mio100 lsp100 div570 bol100 ite100 ukn100 eq132 hnf96 smp42 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 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 03:27:16,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-13 03:27:16,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE