./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 b3b8bf9cef197469aec7ea347f740588dd59c933 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:16:35,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:35,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:35,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:35,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:35,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:35,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:35,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:35,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:35,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:35,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:35,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:35,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:35,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:35,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:35,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:35,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:35,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:35,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:35,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:35,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:35,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:35,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:35,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:35,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:35,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:35,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:35,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:35,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:35,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:35,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:35,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:35,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:35,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:35,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:35,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:35,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:35,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:35,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:35,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:35,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:35,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:16:36,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:36,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:36,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:36,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:36,008 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:36,008 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:16:36,009 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:16:36,009 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:16:36,009 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:16:36,009 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:16:36,009 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:16:36,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:36,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:36,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:16:36,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:36,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:36,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:36,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:16:36,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:16:36,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:16:36,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:36,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:36,012 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:16:36,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:36,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:16:36,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:36,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:36,013 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:16:36,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:36,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:36,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:36,014 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:16:36,016 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:16:36,016 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3b8bf9cef197469aec7ea347f740588dd59c933 [2020-11-28 03:16:36,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:36,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:36,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:36,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:36,317 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:36,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-11-28 03:16:36,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/data/3e17aadcd/cf4cade331b54eec96ae79c0eecb9c82/FLAG530642292 [2020-11-28 03:16:37,008 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:37,011 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-11-28 03:16:37,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/data/3e17aadcd/cf4cade331b54eec96ae79c0eecb9c82/FLAG530642292 [2020-11-28 03:16:37,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/data/3e17aadcd/cf4cade331b54eec96ae79c0eecb9c82 [2020-11-28 03:16:37,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:37,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:37,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:37,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:37,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:37,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309ef8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37, skipping insertion in model container [2020-11-28 03:16:37,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:37,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:37,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:37,693 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:37,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:37,763 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:37,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37 WrapperNode [2020-11-28 03:16:37,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:37,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:37,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:37,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:37,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:37,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:37,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:37,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:37,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... [2020-11-28 03:16:37,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:37,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:37,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:37,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:37,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:38,760 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:38,761 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 03:16:38,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:38 BoogieIcfgContainer [2020-11-28 03:16:38,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:38,765 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:16:38,765 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:16:38,770 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:16:38,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:38,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:16:37" (1/3) ... [2020-11-28 03:16:38,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47454b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:38, skipping insertion in model container [2020-11-28 03:16:38,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:38,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:37" (2/3) ... [2020-11-28 03:16:38,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47454b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:16:38, skipping insertion in model container [2020-11-28 03:16:38,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:16:38,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:38" (3/3) ... [2020-11-28 03:16:38,776 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2020-11-28 03:16:38,832 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:16:38,833 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:16:38,833 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:16:38,833 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:38,833 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:38,833 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:16:38,834 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:38,834 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:16:38,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-11-28 03:16:38,879 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-28 03:16:38,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:38,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:38,886 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:16:38,886 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:38,886 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:16:38,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-11-28 03:16:38,894 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-28 03:16:38,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:38,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:38,895 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:16:38,895 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:38,905 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 12#L21true assume !(0 == base2flt_~m % 4294967296); 37#L27true assume !(base2flt_~m % 4294967296 < 16777216); 32#L49-2true [2020-11-28 03:16:38,906 INFO L796 eck$LassoCheckResult]: Loop: 32#L49-2true assume !false; 59#L50true assume base2flt_~m % 4294967296 >= 33554432; 8#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 32#L49-2true [2020-11-28 03:16:38,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:38,913 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-28 03:16:38,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:38,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878459557] [2020-11-28 03:16:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:39,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878459557] [2020-11-28 03:16:39,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:39,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:39,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002021107] [2020-11-28 03:16:39,214 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-28 03:16:39,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:39,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268610683] [2020-11-28 03:16:39,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:39,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:39,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:39,303 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:39,409 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:39,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:39,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:39,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:39,411 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:39,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:39,412 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:39,412 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:39,412 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-11-28 03:16:39,412 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:39,413 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:39,436 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 03:16:39,453 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 03:16:39,608 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:39,609 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:39,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:39,630 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:39,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:39,689 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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) [2020-11-28 03:16:39,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:39,706 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:39,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:39,762 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:39,811 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:39,814 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:39,814 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:39,814 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:39,814 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:39,814 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:39,815 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:39,815 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:39,815 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:39,815 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-11-28 03:16:39,815 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:39,815 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:39,817 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 03:16:39,838 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 03:16:39,964 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:39,970 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:39,975 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 03:16:39,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:39,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:39,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:39,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:39,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:39,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:39,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:39,989 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:40,039 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 03:16:40,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:40,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:40,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:40,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:40,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:40,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:40,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:40,047 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:40,051 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:40,051 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:40,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:40,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:40,061 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:40,061 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 03:16:40,104 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:40,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:40,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:40,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:40,205 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 03:16:40,229 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 03:16:40,230 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states. Second operand 3 states. [2020-11-28 03:16:40,351 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 71 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2020-11-28 03:16:40,357 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 03:16:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:16:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2020-11-28 03:16:40,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:16:40,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:40,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:16:40,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:40,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:16:40,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:40,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2020-11-28 03:16:40,404 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-11-28 03:16:40,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 79 states and 120 transitions. [2020-11-28 03:16:40,415 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-11-28 03:16:40,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-11-28 03:16:40,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-11-28 03:16:40,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:40,420 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-11-28 03:16:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-11-28 03:16:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-11-28 03:16:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 03:16:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-11-28 03:16:40,455 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-11-28 03:16:40,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:40,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:40,461 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-11-28 03:16:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:40,656 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-28 03:16:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:40,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-11-28 03:16:40,658 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 03:16:40,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-11-28 03:16:40,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-11-28 03:16:40,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-28 03:16:40,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-11-28 03:16:40,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:16:40,661 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-28 03:16:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-11-28 03:16:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:16:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:16:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-11-28 03:16:40,664 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-28 03:16:40,664 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-28 03:16:40,664 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:16:40,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-11-28 03:16:40,666 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 03:16:40,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:40,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:40,666 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:40,666 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:40,667 INFO L794 eck$LassoCheckResult]: Stem: 455#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 435#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 436#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 432#L71 base2flt_#res := base2flt_~__retres4~0; 433#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 454#L21-1 assume !(0 == base2flt_~m % 4294967296); 421#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L49-5 [2020-11-28 03:16:40,667 INFO L796 eck$LassoCheckResult]: Loop: 422#L49-5 assume !false; 439#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 434#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L49-5 [2020-11-28 03:16:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:40,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-28 03:16:40,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:40,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540548] [2020-11-28 03:16:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:40,784 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 03:16:40,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540548] [2020-11-28 03:16:40,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:40,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:40,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507764313] [2020-11-28 03:16:40,785 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:40,786 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-28 03:16:40,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:40,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906512342] [2020-11-28 03:16:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:40,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:40,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:40,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:40,862 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:40,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:40,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:40,863 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:40,863 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:40,863 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:40,863 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:40,863 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:40,864 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-11-28 03:16:40,864 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:40,864 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:40,865 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 03:16:40,877 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 03:16:41,015 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:41,015 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:41,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:41,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:41,072 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:41,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:41,084 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:41,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:41,135 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:41,182 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:41,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:41,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:41,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:41,182 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:41,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:41,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:41,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-11-28 03:16:41,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:41,183 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:41,184 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 03:16:41,199 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 03:16:41,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:41,324 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:41,329 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 03:16:41,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:41,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:41,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:41,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:41,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:41,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:41,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,340 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:41,391 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 03:16:41,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:41,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:41,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:41,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:41,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,396 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:41,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:16:41,399 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:41,404 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:41,405 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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) [2020-11-28 03:16:41,446 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:41,447 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:41,447 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:41,447 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,487 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:41,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:41,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:41,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:41,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:41,558 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 03:16:41,559 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 03:16:41,560 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-11-28 03:16:41,587 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 63 states and 85 transitions. Complement of second has 5 states. [2020-11-28 03:16:41,587 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 03:16:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:16:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-11-28 03:16:41,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:16:41,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:41,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:16:41,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:41,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:16:41,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:41,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-11-28 03:16:41,591 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-28 03:16:41,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-11-28 03:16:41,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-11-28 03:16:41,593 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-28 03:16:41,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-11-28 03:16:41,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:41,594 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-11-28 03:16:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-11-28 03:16:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-11-28 03:16:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 03:16:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-11-28 03:16:41,599 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-11-28 03:16:41,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:41,601 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-11-28 03:16:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:41,674 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-11-28 03:16:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:41,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-11-28 03:16:41,676 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-28 03:16:41,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-11-28 03:16:41,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-28 03:16:41,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-28 03:16:41,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-28 03:16:41,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:16:41,678 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-28 03:16:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-28 03:16:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-28 03:16:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:16:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-11-28 03:16:41,681 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-28 03:16:41,682 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-28 03:16:41,682 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:16:41,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-11-28 03:16:41,682 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-28 03:16:41,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:41,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:41,683 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:41,683 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:41,683 INFO L794 eck$LassoCheckResult]: Stem: 673#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 654#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 652#L71 base2flt_#res := base2flt_~__retres4~0; 653#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 672#L21-1 assume !(0 == base2flt_~m % 4294967296); 642#L27-1 assume base2flt_~m % 4294967296 < 16777216; 643#L39-3 [2020-11-28 03:16:41,684 INFO L796 eck$LassoCheckResult]: Loop: 643#L39-3 assume !false; 671#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 663#L39-2 assume base2flt_~m % 4294967296 < 16777216; 643#L39-3 [2020-11-28 03:16:41,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:41,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-28 03:16:41,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:41,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825040363] [2020-11-28 03:16:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:41,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:41,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:41,765 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:41,766 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-28 03:16:41,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:41,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299953238] [2020-11-28 03:16:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:41,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:41,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:41,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-28 03:16:41,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:41,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228089683] [2020-11-28 03:16:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:41,821 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:41,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:41,865 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:41,897 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:41,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:41,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:41,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:41,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:41,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:41,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:41,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:41,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-11-28 03:16:41,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:41,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:41,899 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 03:16:41,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:16:42,049 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:42,050 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:42,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:42,055 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 03:16:42,105 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:42,105 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:42,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:42,120 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:42,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:42,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:16:42,213 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:42,215 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:42,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:42,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:42,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:42,215 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:42,215 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:42,215 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:42,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:42,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-11-28 03:16:42,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:42,216 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:42,217 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 03:16:42,225 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 03:16:42,339 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:42,339 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:42,349 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 03:16:42,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:42,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:42,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:42,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:42,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:42,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:42,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:16:42,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:42,412 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 03:16:42,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:42,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:42,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:42,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:42,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:42,419 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:42,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:42,423 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:42,427 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:42,428 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:42,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:42,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:42,435 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:42,436 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-28 03:16:42,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:42,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:42,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:42,617 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 03:16:42,618 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 03:16:42,618 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-28 03:16:42,634 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 39 states and 50 transitions. Complement of second has 5 states. [2020-11-28 03:16:42,637 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 03:16:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:16:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-11-28 03:16:42,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:16:42,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:42,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:16:42,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:42,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:16:42,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:42,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-11-28 03:16:42,639 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:16:42,640 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-11-28 03:16:42,640 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-11-28 03:16:42,640 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-11-28 03:16:42,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-28 03:16:42,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:42,641 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-28 03:16:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-28 03:16:42,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-28 03:16:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:16:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-28 03:16:42,649 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-28 03:16:42,649 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-28 03:16:42,649 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:16:42,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-28 03:16:42,650 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:16:42,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:42,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:42,651 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:42,651 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:42,652 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 776#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 777#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 774#L71 base2flt_#res := base2flt_~__retres4~0; 775#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 797#L21-1 assume !(0 == base2flt_~m % 4294967296); 764#L27-1 assume base2flt_~m % 4294967296 < 16777216; 765#L39-3 assume !false; 795#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 770#L71-1 base2flt_#res := base2flt_~__retres4~0; 771#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L21-2 assume !(0 == base2flt_~m % 4294967296); 782#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 773#L49-8 [2020-11-28 03:16:42,652 INFO L796 eck$LassoCheckResult]: Loop: 773#L49-8 assume !false; 788#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 772#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 773#L49-8 [2020-11-28 03:16:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:42,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-11-28 03:16:42,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:42,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547899617] [2020-11-28 03:16:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:42,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547899617] [2020-11-28 03:16:42,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:42,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:42,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921245745] [2020-11-28 03:16:42,717 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:42,718 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-28 03:16:42,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:42,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476103088] [2020-11-28 03:16:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:42,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:42,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:42,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:42,759 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:42,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:42,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:42,760 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:42,760 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:42,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:42,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:42,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:42,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-11-28 03:16:42,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:42,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:42,761 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 03:16:42,767 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 03:16:42,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:42,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:42,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:42,927 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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) [2020-11-28 03:16:42,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:42,981 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,013 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:43,015 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:43,015 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:43,015 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:43,015 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:43,015 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:43,015 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,015 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:43,015 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:43,015 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-11-28 03:16:43,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:43,015 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:43,016 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 03:16:43,025 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 03:16:43,195 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:43,196 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:43,226 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 03:16:43,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:43,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:43,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:43,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:43,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:43,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:43,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,233 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:43,237 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:43,237 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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) [2020-11-28 03:16:43,244 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:43,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:43,244 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,244 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 03:16:43,288 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:43,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:43,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:43,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:43,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:43,373 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 03:16:43,374 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 03:16:43,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-11-28 03:16:43,395 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2020-11-28 03:16:43,398 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 03:16:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:16:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-11-28 03:16:43,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 03:16:43,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:43,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-11-28 03:16:43,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:43,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-28 03:16:43,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:43,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-11-28 03:16:43,401 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-28 03:16:43,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-11-28 03:16:43,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-28 03:16:43,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-11-28 03:16:43,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-28 03:16:43,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:43,407 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-28 03:16:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-28 03:16:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-11-28 03:16:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 03:16:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-11-28 03:16:43,411 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-11-28 03:16:43,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:43,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:16:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:16:43,412 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-11-28 03:16:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:43,447 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-11-28 03:16:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:16:43,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-11-28 03:16:43,449 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-28 03:16:43,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-11-28 03:16:43,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-11-28 03:16:43,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-11-28 03:16:43,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-11-28 03:16:43,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:43,451 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-11-28 03:16:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-11-28 03:16:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-11-28 03:16:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 03:16:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-11-28 03:16:43,460 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-28 03:16:43,460 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-28 03:16:43,461 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:16:43,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-11-28 03:16:43,461 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-28 03:16:43,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:43,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:43,462 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:43,463 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:43,464 INFO L794 eck$LassoCheckResult]: Stem: 1033#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1010#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1007#L71 base2flt_#res := base2flt_~__retres4~0; 1008#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1032#L21-1 assume !(0 == base2flt_~m % 4294967296); 996#L27-1 assume base2flt_~m % 4294967296 < 16777216; 997#L39-3 assume !false; 1031#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1019#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1012#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1002#L71-1 base2flt_#res := base2flt_~__retres4~0; 1003#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1029#L21-2 assume !(0 == base2flt_~m % 4294967296); 1015#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-11-28 03:16:43,464 INFO L796 eck$LassoCheckResult]: Loop: 1017#L39-5 assume !false; 1027#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1028#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-11-28 03:16:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-11-28 03:16:43,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:43,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155949239] [2020-11-28 03:16:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:43,561 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 03:16:43,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155949239] [2020-11-28 03:16:43,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:43,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:43,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417698197] [2020-11-28 03:16:43,562 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-28 03:16:43,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:43,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707866480] [2020-11-28 03:16:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:43,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:43,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:43,573 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:43,604 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:43,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:43,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:43,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:43,604 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:43,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:43,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:43,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-11-28 03:16:43,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:43,605 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:43,606 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 03:16:43,618 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 03:16:43,707 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:43,707 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:43,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:43,717 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:43,764 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_5321a698-92f5-4726-a27b-7a4317af0c5d/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 03:16:43,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:43,770 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:43,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:43,817 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,866 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:43,868 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:43,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:43,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:43,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:43,868 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:43,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,869 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:43,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:43,869 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-11-28 03:16:43,869 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:43,869 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:43,870 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 03:16:43,881 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 03:16:43,977 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:43,977 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:43,982 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 Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:43,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:43,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:43,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:43,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:43,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:43,987 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:43,987 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:16:43,992 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:44,042 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 03:16:44,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:44,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:44,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:44,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:44,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:44,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:44,046 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:44,051 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:44,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:44,055 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_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:44,059 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:44,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:44,060 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:44,060 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:44,104 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:44,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:44,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:44,291 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 03:16:44,292 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 03:16:44,292 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-28 03:16:44,311 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 56 states and 69 transitions. Complement of second has 5 states. [2020-11-28 03:16:44,315 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 03:16:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:16:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-11-28 03:16:44,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-28 03:16:44,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:44,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-28 03:16:44,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:44,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-28 03:16:44,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:44,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-11-28 03:16:44,319 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:16:44,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-11-28 03:16:44,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-11-28 03:16:44,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-11-28 03:16:44,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-11-28 03:16:44,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:44,321 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-11-28 03:16:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-11-28 03:16:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-11-28 03:16:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 03:16:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-11-28 03:16:44,325 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-11-28 03:16:44,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:44,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:44,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:44,326 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-11-28 03:16:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:44,448 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-11-28 03:16:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:44,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-11-28 03:16:44,450 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:16:44,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-11-28 03:16:44,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-28 03:16:44,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-28 03:16:44,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-28 03:16:44,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:44,452 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-28 03:16:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-28 03:16:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-11-28 03:16:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 03:16:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-11-28 03:16:44,455 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-28 03:16:44,455 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-28 03:16:44,455 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:16:44,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-11-28 03:16:44,458 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:16:44,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:44,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:44,460 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:44,460 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:44,460 INFO L794 eck$LassoCheckResult]: Stem: 1293#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1268#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1269#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1266#L71 base2flt_#res := base2flt_~__retres4~0; 1267#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1292#L21-1 assume !(0 == base2flt_~m % 4294967296); 1255#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1256#L39-3 assume !false; 1291#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1278#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1280#L39-3 assume !false; 1290#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1261#L71-1 base2flt_#res := base2flt_~__retres4~0; 1262#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1289#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1257#L71-2 base2flt_#res := base2flt_~__retres4~0; 1258#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1285#L21-3 assume !(0 == base2flt_~m % 4294967296); 1272#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1260#L49-11 [2020-11-28 03:16:44,461 INFO L796 eck$LassoCheckResult]: Loop: 1260#L49-11 assume !false; 1277#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1259#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1260#L49-11 [2020-11-28 03:16:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-11-28 03:16:44,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:44,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907994913] [2020-11-28 03:16:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:44,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907994913] [2020-11-28 03:16:44,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827052644] [2020-11-28 03:16:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:44,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:44,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:44,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:44,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 03:16:44,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058658785] [2020-11-28 03:16:44,599 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-11-28 03:16:44,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:44,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864471678] [2020-11-28 03:16:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:44,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:44,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:44,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:44,646 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:44,646 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:44,646 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:44,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:44,647 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:44,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:44,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:44,647 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:44,647 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-11-28 03:16:44,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:44,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:44,648 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 03:16:44,656 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 03:16:44,750 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:44,750 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:44,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:44,754 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:44,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:44,794 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:44,821 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:44,822 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:44,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:44,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:44,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:44,823 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:44,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:44,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:44,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:44,823 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-11-28 03:16:44,823 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:44,823 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:44,824 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 03:16:44,852 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 03:16:44,975 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:44,976 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:44,987 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 03:16:44,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:44,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:44,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:44,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:44,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:44,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:44,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:44,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:45,000 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:45,001 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_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:45,008 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:45,008 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:45,008 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:45,008 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 03:16:45,034 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:45,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:45,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:45,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:45,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:45,120 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 03:16:45,121 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 03:16:45,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-11-28 03:16:45,170 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 46 states and 59 transitions. Complement of second has 4 states. [2020-11-28 03:16:45,171 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 03:16:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:16:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-11-28 03:16:45,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-11-28 03:16:45,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:45,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-11-28 03:16:45,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:45,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-28 03:16:45,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:45,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-11-28 03:16:45,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:16:45,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-11-28 03:16:45,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-11-28 03:16:45,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-11-28 03:16:45,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-11-28 03:16:45,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:45,175 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-28 03:16:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-11-28 03:16:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-28 03:16:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:16:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-11-28 03:16:45,178 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-28 03:16:45,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:45,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:45,186 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-11-28 03:16:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:45,261 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-11-28 03:16:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:45,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-11-28 03:16:45,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:16:45,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-11-28 03:16:45,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-11-28 03:16:45,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-11-28 03:16:45,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-11-28 03:16:45,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:16:45,264 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-11-28 03:16:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-11-28 03:16:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-28 03:16:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:16:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-11-28 03:16:45,267 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-28 03:16:45,267 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-28 03:16:45,267 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:16:45,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-11-28 03:16:45,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:16:45,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:16:45,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:16:45,269 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:45,269 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:16:45,270 INFO L794 eck$LassoCheckResult]: Stem: 1604#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1582#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1583#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1579#L71 base2flt_#res := base2flt_~__retres4~0; 1580#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1603#L21-1 assume !(0 == base2flt_~m % 4294967296); 1570#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1571#L39-3 assume !false; 1602#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1590#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1591#L39-3 assume !false; 1607#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1609#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1584#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1574#L71-1 base2flt_#res := base2flt_~__retres4~0; 1575#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1600#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1572#L71-2 base2flt_#res := base2flt_~__retres4~0; 1573#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1596#L21-3 assume !(0 == base2flt_~m % 4294967296); 1585#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1586#L39-7 [2020-11-28 03:16:45,270 INFO L796 eck$LassoCheckResult]: Loop: 1586#L39-7 assume !false; 1594#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1595#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1586#L39-7 [2020-11-28 03:16:45,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:45,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-11-28 03:16:45,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:45,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443461360] [2020-11-28 03:16:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:45,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443461360] [2020-11-28 03:16:45,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643692966] [2020-11-28 03:16:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:45,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:16:45,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:45,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:45,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 03:16:45,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50776464] [2020-11-28 03:16:45,699 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:16:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:45,700 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-11-28 03:16:45,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:45,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554624566] [2020-11-28 03:16:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:45,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:45,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:45,714 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:45,784 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:45,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:45,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:45,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:45,785 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:16:45,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:45,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:45,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:45,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-11-28 03:16:45,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:45,785 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:45,786 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 03:16:45,802 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 03:16:45,915 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:45,915 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:45,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:45,930 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:45,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:16:45,978 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_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:45,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:16:45,986 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:46,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:16:46,038 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:46,088 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:16:46,090 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:16:46,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:16:46,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:16:46,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:16:46,090 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:16:46,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:46,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:16:46,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:16:46,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-11-28 03:16:46,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:16:46,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:16:46,092 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 03:16:46,104 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 03:16:46,206 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:16:46,207 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:46,218 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 03:16:46,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:46,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:46,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:46,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:46,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:46,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:46,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:46,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:46,278 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 03:16:46,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:16:46,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:16:46,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:16:46,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:16:46,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:16:46,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:16:46,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:46,287 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:16:46,291 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:16:46,291 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_5321a698-92f5-4726-a27b-7a4317af0c5d/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:16:46,295 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:16:46,295 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:16:46,296 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:16:46,296 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:16:46,341 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:16:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:46,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:16:46,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:46,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:46,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:46,497 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 03:16:46,497 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 03:16:46,498 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-28 03:16:46,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 4 states. [2020-11-28 03:16:46,560 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 03:16:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:16:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-11-28 03:16:46,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-28 03:16:46,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:46,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-28 03:16:46,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:46,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-11-28 03:16:46,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:16:46,562 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-11-28 03:16:46,563 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:16:46,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-11-28 03:16:46,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:16:46,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:16:46,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:16:46,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:16:46,563 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:46,563 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:46,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:46,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:46,564 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-11-28 03:16:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:46,565 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-28 03:16:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:16:46,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-28 03:16:46,565 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:16:46,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:16:46,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:16:46,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:16:46,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:16:46,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:16:46,566 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:46,566 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:46,566 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:46,566 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-28 03:16:46,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:16:46,566 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:16:46,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:16:46,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:16:46 BoogieIcfgContainer [2020-11-28 03:16:46,577 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:16:46,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:46,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:46,579 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:46,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:38" (3/4) ... [2020-11-28 03:16:46,584 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:16:46,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:46,586 INFO L168 Benchmark]: Toolchain (without parser) took 9252.92 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 77.4 MB in the beginning and 105.2 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:46,587 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 75.5 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:46,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.80 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 82.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:46,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.98 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 80.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:46,589 INFO L168 Benchmark]: Boogie Preprocessor took 44.57 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 78.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:46,590 INFO L168 Benchmark]: RCFGBuilder took 876.74 ms. Allocated memory is still 109.1 MB. Free memory was 78.3 MB in the beginning and 51.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:46,590 INFO L168 Benchmark]: BuchiAutomizer took 7812.78 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 105.2 MB in the end (delta: -54.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:46,591 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 134.2 MB. Free memory is still 105.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:46,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 75.5 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 430.80 ms. Allocated memory is still 109.1 MB. Free memory was 77.2 MB in the beginning and 82.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.98 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 80.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.57 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 78.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 876.74 ms. Allocated memory is still 109.1 MB. Free memory was 78.3 MB in the beginning and 51.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7812.78 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 105.2 MB in the end (delta: -54.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 134.2 MB. Free memory is still 105.2 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 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.7s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 5.7s. Construction of modules took 0.5s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 527 SDtfs, 344 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...