./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer --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 9c532f6b804ad7a925ea1538a844c05d7db150e0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:04:10,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:10,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:10,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:10,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:10,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:10,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:10,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:10,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:10,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:10,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:10,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:10,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:10,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:10,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:10,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:10,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:10,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:10,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:10,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:10,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:10,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:10,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:10,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:10,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:10,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:10,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:10,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:10,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:10,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:10,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:10,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:10,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:10,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:10,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:10,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:10,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:10,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:10,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:10,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:10,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:10,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:04:10,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:10,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:10,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:10,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:10,199 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:10,199 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:04:10,199 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:04:10,199 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:04:10,200 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:04:10,200 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:04:10,201 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:04:10,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:10,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:04:10,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:04:10,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:10,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:04:10,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:10,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:04:10,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:04:10,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:04:10,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:04:10,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:10,204 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:04:10,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:10,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:04:10,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:10,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:10,205 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:04:10,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:10,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:10,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:10,208 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:04:10,209 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:04:10,209 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:/tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c532f6b804ad7a925ea1538a844c05d7db150e0 [2020-11-28 03:04:10,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:10,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:10,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:10,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:10,518 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:10,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-11-28 03:04:10,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/data/6f5baca5c/8e18960a7af84fe89f69af2977000a20/FLAGa8baba665 [2020-11-28 03:04:11,069 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:11,070 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-11-28 03:04:11,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/data/6f5baca5c/8e18960a7af84fe89f69af2977000a20/FLAGa8baba665 [2020-11-28 03:04:11,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/data/6f5baca5c/8e18960a7af84fe89f69af2977000a20 [2020-11-28 03:04:11,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:11,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:11,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:11,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:11,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:11,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2a640f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11, skipping insertion in model container [2020-11-28 03:04:11,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:11,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:11,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:11,785 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:11,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:11,840 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:11,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11 WrapperNode [2020-11-28 03:04:11,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:11,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:11,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:11,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:11,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:11,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:11,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:11,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:11,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:11,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:11,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:11,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:11,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:04:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:04:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:12,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:12,648 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:12,648 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-28 03:04:12,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:12 BoogieIcfgContainer [2020-11-28 03:04:12,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:12,652 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:04:12,652 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:04:12,654 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:04:12,655 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:12,655 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:04:11" (1/3) ... [2020-11-28 03:04:12,656 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@532a591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:04:12, skipping insertion in model container [2020-11-28 03:04:12,657 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:12,657 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11" (2/3) ... [2020-11-28 03:04:12,657 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@532a591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:04:12, skipping insertion in model container [2020-11-28 03:04:12,657 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:04:12,658 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:12" (3/3) ... [2020-11-28 03:04:12,659 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-11-28 03:04:12,704 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:04:12,704 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:04:12,704 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:04:12,704 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:12,705 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:12,705 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:04:12,705 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:12,705 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:04:12,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states. [2020-11-28 03:04:12,740 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 03:04:12,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:12,740 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:12,745 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:04:12,745 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:12,746 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:04:12,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states. [2020-11-28 03:04:12,752 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 03:04:12,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:12,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:12,753 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:04:12,753 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:12,760 INFO L794 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 14#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 42#L22true assume !(0 == base2flt_~m % 4294967296); 69#L28true assume !(base2flt_~m % 4294967296 < 16777216); 63#L50-2true [2020-11-28 03:04:12,761 INFO L796 eck$LassoCheckResult]: Loop: 63#L50-2true assume !false; 11#L51true assume base2flt_~m % 4294967296 >= 33554432; 38#L52true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 63#L50-2true [2020-11-28 03:04:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-28 03:04:12,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:12,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506111364] [2020-11-28 03:04:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:12,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506111364] [2020-11-28 03:04:12,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:12,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:04:12,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706108029] [2020-11-28 03:04:12,953 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:04:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-28 03:04:12,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:12,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554282512] [2020-11-28 03:04:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:12,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:13,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:13,022 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:13,063 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:13,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:13,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:13,064 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:13,064 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:13,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:13,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:13,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:13,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2020-11-28 03:04:13,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:13,065 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:13,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:13,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:13,277 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:13,278 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:13,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:13,297 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:13,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:13,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:13,362 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:13,364 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:13,364 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:13,364 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:13,364 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:13,365 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:13,365 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:13,365 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:13,365 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:13,365 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2020-11-28 03:04:13,365 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:13,365 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:13,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:13,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:13,493 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:13,498 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:13,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:13,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:13,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:13,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:13,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:13,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:13,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:13,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:13,514 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:13,524 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:13,524 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:13,551 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:13,551 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:13,552 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:13,553 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:13,589 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:13,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:13,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:13,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:13,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:13,706 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:04:13,713 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states. Second operand 3 states. [2020-11-28 03:04:13,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states.. Second operand 3 states. Result 237 states and 365 transitions. Complement of second has 6 states. [2020-11-28 03:04:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2020-11-28 03:04:13,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:04:13,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:13,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:04:13,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:13,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:04:13,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:13,820 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 237 states and 365 transitions. [2020-11-28 03:04:13,834 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-28 03:04:13,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 237 states to 57 states and 82 transitions. [2020-11-28 03:04:13,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-11-28 03:04:13,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-11-28 03:04:13,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-11-28 03:04:13,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:13,843 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-11-28 03:04:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-11-28 03:04:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-28 03:04:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:04:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-11-28 03:04:13,916 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-11-28 03:04:13,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:13,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:13,924 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-11-28 03:04:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:13,988 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-11-28 03:04:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:13,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-11-28 03:04:13,991 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:04:13,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-11-28 03:04:13,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-28 03:04:13,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-28 03:04:13,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-11-28 03:04:13,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:04:13,992 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 03:04:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-11-28 03:04:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 03:04:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:04:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-11-28 03:04:13,997 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 03:04:13,997 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 03:04:13,997 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:04:13,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-11-28 03:04:13,999 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:04:14,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:14,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:14,000 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:14,000 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:14,001 INFO L794 eck$LassoCheckResult]: Stem: 456#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 454#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 455#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 451#L72 base2flt_#res := base2flt_~__retres4~0; 452#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 453#L22-1 assume !(0 == base2flt_~m % 4294967296); 438#L28-1 assume !(base2flt_~m % 4294967296 < 16777216); 439#L50-5 [2020-11-28 03:04:14,001 INFO L796 eck$LassoCheckResult]: Loop: 439#L50-5 assume !false; 446#L51-1 assume base2flt_~m % 4294967296 >= 33554432; 447#L52-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 439#L50-5 [2020-11-28 03:04:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-28 03:04:14,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:14,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516734562] [2020-11-28 03:04:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,068 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-28 03:04:14,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:14,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750263354] [2020-11-28 03:04:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,101 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-11-28 03:04:14,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:14,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813707471] [2020-11-28 03:04:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,193 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:14,223 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:14,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:14,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:14,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:14,224 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:14,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:14,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:14,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2020-11-28 03:04:14,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:14,224 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:14,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:14,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:14,370 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:14,370 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:14,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:14,379 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,419 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:14,419 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:14,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:14,429 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:14,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:14,477 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,516 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:14,517 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:14,518 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:14,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:14,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:14,518 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:14,518 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:14,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:14,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2020-11-28 03:04:14,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:14,518 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:14,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:14,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:14,664 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:14,664 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:14,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:14,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:14,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:14,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:14,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:14,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:14,678 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:14,678 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:14,727 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:14,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:14,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:14,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:14,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:14,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:14,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:14,734 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:14,770 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:14,771 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:14,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:14,780 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:14,780 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:14,780 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:14,815 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:14,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:14,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:14,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:14,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:14,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:14,885 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:04:14,885 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-28 03:04:14,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-11-28 03:04:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-11-28 03:04:14,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:04:14,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:14,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:04:14,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:14,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:04:14,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:14,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-11-28 03:04:14,916 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-28 03:04:14,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-11-28 03:04:14,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-11-28 03:04:14,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-28 03:04:14,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-11-28 03:04:14,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:14,917 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-11-28 03:04:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-11-28 03:04:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 03:04:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:04:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 03:04:14,926 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:04:14,926 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:04:14,927 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:04:14,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-28 03:04:14,928 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-28 03:04:14,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:14,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:14,935 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:14,935 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:14,935 INFO L794 eck$LassoCheckResult]: Stem: 574#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 572#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 573#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 568#L72 base2flt_#res := base2flt_~__retres4~0; 569#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 571#L22-1 assume !(0 == base2flt_~m % 4294967296); 553#L28-1 assume base2flt_~m % 4294967296 < 16777216; 551#L40-3 [2020-11-28 03:04:14,935 INFO L796 eck$LassoCheckResult]: Loop: 551#L40-3 assume !false; 552#L31-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 555#L40-2 assume base2flt_~m % 4294967296 < 16777216; 551#L40-3 [2020-11-28 03:04:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-28 03:04:14,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:14,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888981659] [2020-11-28 03:04:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,985 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:14,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,986 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-28 03:04:14,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:14,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813481506] [2020-11-28 03:04:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,997 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:14,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-28 03:04:14,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:15,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428836479] [2020-11-28 03:04:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:15,112 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:15,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:15,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:15,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:15,113 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:15,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:15,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:15,113 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2020-11-28 03:04:15,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:15,113 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:15,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:15,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:15,204 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:15,204 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:15,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:15,208 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,246 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:04:15,246 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:15,251 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:15,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:15,302 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:15,345 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:15,346 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:15,346 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:15,346 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:15,346 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:15,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:15,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:15,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2020-11-28 03:04:15,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:15,346 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:15,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:15,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:15,451 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:15,451 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:15,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:15,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:15,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:15,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:15,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:15,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:15,469 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:15,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,473 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:15,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:15,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:15,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:15,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:15,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:15,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:15,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:15,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,524 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:15,527 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:15,528 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:15,536 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:15,536 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:15,537 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:15,537 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,572 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:15,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:15,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:15,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:15,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:15,759 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:04:15,759 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-28 03:04:15,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2020-11-28 03:04:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-11-28 03:04:15,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:04:15,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:15,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:04:15,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:15,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:04:15,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:15,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-11-28 03:04:15,782 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:04:15,783 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-11-28 03:04:15,783 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-11-28 03:04:15,783 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-28 03:04:15,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-11-28 03:04:15,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:15,784 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-28 03:04:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-11-28 03:04:15,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-11-28 03:04:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:04:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-11-28 03:04:15,789 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-28 03:04:15,789 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-28 03:04:15,789 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:04:15,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-11-28 03:04:15,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:04:15,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:15,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:15,790 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:15,790 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:15,791 INFO L794 eck$LassoCheckResult]: Stem: 700#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 698#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 699#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 694#L72 base2flt_#res := base2flt_~__retres4~0; 695#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 697#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 685#L72-1 base2flt_#res := base2flt_~__retres4~0; 686#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 693#L22-2 assume !(0 == base2flt_~m % 4294967296); 671#L28-2 assume !(base2flt_~m % 4294967296 < 16777216); 672#L50-8 [2020-11-28 03:04:15,791 INFO L796 eck$LassoCheckResult]: Loop: 672#L50-8 assume !false; 683#L51-2 assume base2flt_~m % 4294967296 >= 33554432; 684#L52-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 672#L50-8 [2020-11-28 03:04:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-11-28 03:04:15,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:15,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161479998] [2020-11-28 03:04:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,850 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:15,851 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-28 03:04:15,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:15,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376191262] [2020-11-28 03:04:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,862 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-11-28 03:04:15,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:15,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738014088] [2020-11-28 03:04:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:15,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:15,903 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:15,938 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:15,938 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:15,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:15,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:15,939 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:15,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:15,939 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:15,939 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:15,939 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2020-11-28 03:04:15,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:15,939 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:15,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:15,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,051 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:16,051 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:16,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:16,056 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:16,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:16,143 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:16,145 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:16,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:16,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:16,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:16,146 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:16,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:16,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:16,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2020-11-28 03:04:16,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:16,146 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:16,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,264 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:16,264 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:16,278 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:16,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:16,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:16,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:16,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:16,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:16,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:16,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,284 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:16,288 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:16,288 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,298 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:16,299 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:16,300 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:16,300 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-28 03:04:16,334 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:16,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:16,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:16,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:16,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:16,399 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:04:16,399 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:04:16,408 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 33 states and 43 transitions. Complement of second has 4 states. [2020-11-28 03:04:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:04:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-11-28 03:04:16,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:04:16,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:16,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 03:04:16,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:16,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:04:16,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:16,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-11-28 03:04:16,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:04:16,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-11-28 03:04:16,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-11-28 03:04:16,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-11-28 03:04:16,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-28 03:04:16,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:04:16,413 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:04:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-28 03:04:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:04:16,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:04:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 03:04:16,415 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:04:16,415 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:04:16,416 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:04:16,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-28 03:04:16,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:04:16,416 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:04:16,416 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:04:16,417 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:16,417 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:04:16,417 INFO L794 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 816#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 817#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 811#L72 base2flt_#res := base2flt_~__retres4~0; 812#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 815#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 803#L72-1 base2flt_#res := base2flt_~__retres4~0; 804#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 813#L22-2 assume !(0 == base2flt_~m % 4294967296); 792#L28-2 assume base2flt_~m % 4294967296 < 16777216; 793#L40-5 [2020-11-28 03:04:16,417 INFO L796 eck$LassoCheckResult]: Loop: 793#L40-5 assume !false; 809#L31-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 810#L40-4 assume base2flt_~m % 4294967296 < 16777216; 793#L40-5 [2020-11-28 03:04:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:16,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-11-28 03:04:16,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:16,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149669911] [2020-11-28 03:04:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:16,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:16,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:16,456 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-28 03:04:16,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:16,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232239950] [2020-11-28 03:04:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:16,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:16,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:16,472 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-11-28 03:04:16,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:16,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608407775] [2020-11-28 03:04:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:16,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:16,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:16,528 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:16,614 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:16,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:16,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:16,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:16,614 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:04:16,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:16,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:16,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2020-11-28 03:04:16,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:16,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:16,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,701 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:16,701 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:16,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:04:16,706 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:04:16,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:04:16,759 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:04:16,760 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:04:16,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:04:16,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:04:16,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:04:16,761 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:04:16,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,761 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:04:16,761 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:04:16,761 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2020-11-28 03:04:16,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:04:16,761 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:04:16,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:04:16,851 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:04:16,851 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:16,859 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:04:16,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:04:16,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:04:16,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:04:16,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:04:16,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:04:16,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:04:16,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,866 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:04:16,870 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:04:16,870 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43dfbe40-e3b8-43c2-a251-e9d3474562ea/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:04:16,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:04:16,874 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:04:16,874 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:04:16,874 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:04:16,907 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:04:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:16,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:16,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:16,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:16,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:17,006 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:04:17,006 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-28 03:04:17,014 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 31 states and 39 transitions. Complement of second has 4 states. [2020-11-28 03:04:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:04:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:04:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-11-28 03:04:17,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:04:17,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:17,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 03:04:17,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:17,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:04:17,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:04:17,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-28 03:04:17,018 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:04:17,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-28 03:04:17,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:04:17,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:04:17,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:04:17,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:04:17,019 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:17,019 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:17,019 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:17,019 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:04:17,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:04:17,019 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:04:17,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:04:17,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:04:17 BoogieIcfgContainer [2020-11-28 03:04:17,025 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:04:17,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:17,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:17,026 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:17,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:12" (3/4) ... [2020-11-28 03:04:17,030 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:04:17,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:17,031 INFO L168 Benchmark]: Toolchain (without parser) took 5588.32 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 54.8 MB in the beginning and 66.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:17,032 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:17,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.20 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 65.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:17,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.75 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 63.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:17,037 INFO L168 Benchmark]: Boogie Preprocessor took 34.45 ms. Allocated memory is still 92.3 MB. Free memory was 63.3 MB in the beginning and 61.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:17,041 INFO L168 Benchmark]: RCFGBuilder took 720.97 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.5 MB in the beginning and 74.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:17,041 INFO L168 Benchmark]: BuchiAutomizer took 4373.71 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 74.6 MB in the beginning and 66.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:17,042 INFO L168 Benchmark]: Witness Printer took 4.08 ms. Allocated memory is still 134.2 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:17,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.20 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 65.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.75 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 63.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.45 ms. Allocated memory is still 92.3 MB. Free memory was 63.3 MB in the beginning and 61.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 720.97 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.5 MB in the beginning and 74.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4373.71 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 74.6 MB in the beginning and 66.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.08 ms. Allocated memory is still 134.2 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 257 SDtfs, 224 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 53ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...