./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.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_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:56:59,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:59,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:59,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:59,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:59,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:59,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:59,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:59,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:59,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:59,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:59,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:59,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:59,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:59,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:59,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:59,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:59,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:59,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:59,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:59,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:59,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:59,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:59,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:59,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:59,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:59,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:59,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:59,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:59,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:59,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:59,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:59,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:59,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:59,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:59,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:59,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:59,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:59,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:59,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:59,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:59,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:56:59,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:59,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:59,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:59,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:59,834 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:59,834 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:59,834 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:59,834 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:59,835 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:59,835 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:59,836 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:59,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:59,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:59,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:59,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:59,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:59,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:59,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:59,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:59,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:59,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:59,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:59,839 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:59,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:59,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:59,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:59,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:59,840 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:59,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:59,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:59,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:59,841 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:59,843 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:59,843 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_d89129e8-14de-4f03-a705-06efb32bb331/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-28 02:57:00,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:00,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:00,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:00,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:00,163 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:00,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-28 02:57:00,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/data/80bd7778d/a2f8c228b78a4d76b6f69f61b2e4a9ae/FLAG0cfbb56b4 [2020-11-28 02:57:00,699 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:00,699 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-28 02:57:00,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/data/80bd7778d/a2f8c228b78a4d76b6f69f61b2e4a9ae/FLAG0cfbb56b4 [2020-11-28 02:57:01,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/data/80bd7778d/a2f8c228b78a4d76b6f69f61b2e4a9ae [2020-11-28 02:57:01,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:01,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:01,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:01,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:01,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:01,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a0e87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01, skipping insertion in model container [2020-11-28 02:57:01,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:01,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:01,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:01,356 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:01,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:01,418 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:01,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01 WrapperNode [2020-11-28 02:57:01,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:01,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:01,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:01,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:01,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:01,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:01,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:01,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:01,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... [2020-11-28 02:57:01,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:01,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:01,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:01,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:01,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:02,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:02,322 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-28 02:57:02,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02 BoogieIcfgContainer [2020-11-28 02:57:02,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:02,325 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:57:02,325 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:57:02,331 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:57:02,332 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:02,332 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:01" (1/3) ... [2020-11-28 02:57:02,334 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24c9a3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:02, skipping insertion in model container [2020-11-28 02:57:02,334 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:02,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:01" (2/3) ... [2020-11-28 02:57:02,336 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24c9a3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:02, skipping insertion in model container [2020-11-28 02:57:02,336 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:02,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02" (3/3) ... [2020-11-28 02:57:02,342 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-28 02:57:02,402 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:57:02,402 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:57:02,402 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:57:02,403 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:02,403 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:02,403 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:57:02,403 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:02,403 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:57:02,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-11-28 02:57:02,444 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 02:57:02,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:02,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:02,452 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:57:02,452 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:57:02,452 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:57:02,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-11-28 02:57:02,460 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 02:57:02,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:02,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:02,461 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:57:02,461 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:57:02,468 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 14#L21true assume !(0 == base2flt_~m % 4294967296); 59#L27true assume !(base2flt_~m % 4294967296 < 16777216); 52#L49-2true [2020-11-28 02:57:02,469 INFO L796 eck$LassoCheckResult]: Loop: 52#L49-2true assume !false; 85#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 52#L49-2true [2020-11-28 02:57:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-28 02:57:02,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59940379] [2020-11-28 02:57:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59940379] [2020-11-28 02:57:02,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:02,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451887291] [2020-11-28 02:57:02,684 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:57:02,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,685 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-28 02:57:02,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056014317] [2020-11-28 02:57:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:02,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:02,736 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:02,787 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:02,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:02,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:02,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:02,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:02,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:02,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:02,788 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:02,788 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2020-11-28 02:57:02,788 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:02,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:02,807 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 02:57:02,819 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 02:57:02,955 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:02,956 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:02,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:02,971 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:03,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:03,021 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 [2020-11-28 02:57:03,051 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:03,053 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:03,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:03,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:03,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:03,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:03,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:03,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:03,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:03,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2020-11-28 02:57:03,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:03,054 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:03,055 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 02:57:03,064 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 02:57:03,221 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:03,226 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:03,232 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 02:57:03,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:03,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:03,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:03,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:03,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:03,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:03,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:03,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:03,251 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:57:03,251 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_d89129e8-14de-4f03-a705-06efb32bb331/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:03,300 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:03,300 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:03,301 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:03,302 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 02:57:03,338 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:03,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:03,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:03,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:03,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:03,435 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 02:57:03,460 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 02:57:03,462 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states. Second operand 3 states. [2020-11-28 02:57:03,565 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states.. Second operand 3 states. Result 277 states and 435 transitions. Complement of second has 6 states. [2020-11-28 02:57:03,566 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 02:57:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:57:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2020-11-28 02:57:03,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 02:57:03,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:03,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 02:57:03,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:03,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 02:57:03,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:03,575 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 435 transitions. [2020-11-28 02:57:03,595 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-28 02:57:03,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 57 states and 82 transitions. [2020-11-28 02:57:03,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-11-28 02:57:03,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-11-28 02:57:03,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-11-28 02:57:03,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:57:03,603 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-11-28 02:57:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-11-28 02:57:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-28 02:57:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 02:57:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-11-28 02:57:03,630 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-11-28 02:57:03,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:03,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:03,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:03,635 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-11-28 02:57:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:03,701 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-11-28 02:57:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:03,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-11-28 02:57:03,709 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 02:57:03,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-11-28 02:57:03,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-28 02:57:03,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-28 02:57:03,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-11-28 02:57:03,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:03,710 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 02:57:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-11-28 02:57:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 02:57:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 02:57:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-11-28 02:57:03,716 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 02:57:03,716 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 02:57:03,717 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:57:03,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-11-28 02:57:03,720 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 02:57:03,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:03,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:03,725 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:03,725 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:57:03,725 INFO L794 eck$LassoCheckResult]: Stem: 509#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 507#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 508#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 501#L71 base2flt_#res := base2flt_~__retres4~0; 502#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 505#L21-1 assume !(0 == base2flt_~m % 4294967296); 487#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 488#L49-5 [2020-11-28 02:57:03,725 INFO L796 eck$LassoCheckResult]: Loop: 488#L49-5 assume !false; 497#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 498#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 488#L49-5 [2020-11-28 02:57:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-28 02:57:03,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:03,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250163271] [2020-11-28 02:57:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:03,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:03,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:03,774 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-28 02:57:03,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:03,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542839850] [2020-11-28 02:57:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:03,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:03,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:03,807 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:03,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-11-28 02:57:03,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:03,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975742786] [2020-11-28 02:57:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:03,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:03,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:03,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:03,955 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:03,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:03,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:03,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:03,956 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:03,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:03,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:03,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:03,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2020-11-28 02:57:03,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:03,956 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:03,957 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 02:57:03,970 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 02:57:04,092 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:04,092 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:04,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:04,103 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:57:04,141 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_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:57:04,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:04,153 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:57:04,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:04,204 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,236 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:04,238 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:04,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:04,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:04,238 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:04,238 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:04,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,238 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:04,238 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:04,238 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2020-11-28 02:57:04,238 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:04,239 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:04,240 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 02:57:04,284 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 02:57:04,404 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:04,405 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:04,413 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 02:57:04,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:04,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:04,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:04,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:04,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:04,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:04,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:04,460 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:04,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:04,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:04,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:04,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:04,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:04,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:04,471 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:04,476 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:57:04,476 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_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:04,483 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:04,483 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:04,483 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:04,483 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,520 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:04,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:04,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:04,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:04,656 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 02:57:04,657 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 02:57:04,657 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-28 02:57:04,687 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-11-28 02:57:04,688 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 02:57:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:57:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-11-28 02:57:04,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 02:57:04,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:04,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 02:57:04,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:04,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 02:57:04,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:04,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-11-28 02:57:04,691 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-28 02:57:04,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-11-28 02:57:04,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-11-28 02:57:04,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-28 02:57:04,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-11-28 02:57:04,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:57:04,693 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-11-28 02:57:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-11-28 02:57:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 02:57:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:57:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 02:57:04,696 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 02:57:04,696 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 02:57:04,696 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:57:04,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-28 02:57:04,696 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-28 02:57:04,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:04,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:04,697 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:04,697 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:57:04,697 INFO L794 eck$LassoCheckResult]: Stem: 627#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 625#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 626#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 619#L71 base2flt_#res := base2flt_~__retres4~0; 620#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 623#L21-1 assume !(0 == base2flt_~m % 4294967296); 602#L27-1 assume base2flt_~m % 4294967296 < 16777216; 604#L39-3 [2020-11-28 02:57:04,698 INFO L796 eck$LassoCheckResult]: Loop: 604#L39-3 assume !false; 622#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 605#L39-2 assume base2flt_~m % 4294967296 < 16777216; 604#L39-3 [2020-11-28 02:57:04,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:04,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-28 02:57:04,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:04,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822610204] [2020-11-28 02:57:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:04,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:04,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:04,753 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:04,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:04,754 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-28 02:57:04,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:04,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384121241] [2020-11-28 02:57:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:04,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:04,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:04,764 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:04,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-28 02:57:04,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:04,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31876211] [2020-11-28 02:57:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:04,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:04,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:04,831 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:04,867 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:04,867 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:04,867 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:04,867 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:04,867 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:04,867 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:04,867 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:04,868 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:04,868 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2020-11-28 02:57:04,868 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:04,868 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:04,869 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 02:57:04,882 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 02:57:04,962 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:04,962 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:04,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:04,969 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:57:05,007 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_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:05,015 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:05,059 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 02:57:05,099 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:05,101 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:05,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:05,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:05,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:05,101 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:05,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:05,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:05,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2020-11-28 02:57:05,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:05,102 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:05,103 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 02:57:05,113 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 02:57:05,188 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:05,188 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,199 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 02:57:05,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:05,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:05,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:05,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:05,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:05,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:05,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,218 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,250 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 02:57:05,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:05,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:05,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:05,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:05,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:05,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:05,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:05,256 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:05,259 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:57:05,260 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_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:57:05,263 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:05,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:05,264 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:05,264 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,299 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:05,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:05,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:05,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:05,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:05,421 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 02:57:05,422 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 02:57:05,422 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-28 02:57:05,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2020-11-28 02:57:05,443 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 02:57:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:57:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-11-28 02:57:05,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 02:57:05,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:05,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 02:57:05,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:05,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 02:57:05,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:05,445 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-11-28 02:57:05,446 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 02:57:05,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-11-28 02:57:05,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-11-28 02:57:05,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-28 02:57:05,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-11-28 02:57:05,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:57:05,447 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-28 02:57:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-11-28 02:57:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-11-28 02:57:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:57:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-11-28 02:57:05,450 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-28 02:57:05,450 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-28 02:57:05,450 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:57:05,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-11-28 02:57:05,451 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 02:57:05,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:05,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:05,455 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:05,455 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:57:05,456 INFO L794 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 751#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 752#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 744#L71 base2flt_#res := base2flt_~__retres4~0; 745#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 749#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 734#L71-1 base2flt_#res := base2flt_~__retres4~0; 735#L72-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 743#L21-2 assume !(0 == base2flt_~m % 4294967296); 750#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 736#L49-8 [2020-11-28 02:57:05,456 INFO L796 eck$LassoCheckResult]: Loop: 736#L49-8 assume !false; 732#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 733#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 736#L49-8 [2020-11-28 02:57:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-11-28 02:57:05,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:05,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875473393] [2020-11-28 02:57:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:05,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:05,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:05,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:05,525 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-28 02:57:05,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:05,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762687652] [2020-11-28 02:57:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:05,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:05,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:05,549 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-11-28 02:57:05,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:05,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318877338] [2020-11-28 02:57:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:05,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:05,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:05,612 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:05,642 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:05,642 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:05,642 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:05,642 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:05,642 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:05,642 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,642 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:05,643 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:05,643 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2020-11-28 02:57:05,643 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:05,643 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:05,644 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 02:57:05,651 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 02:57:05,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:05,736 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:05,740 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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) [2020-11-28 02:57:05,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:05,786 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,825 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:05,827 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:05,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:05,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:05,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:05,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:05,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:05,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:05,828 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2020-11-28 02:57:05,828 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:05,828 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:05,829 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 02:57:05,837 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 02:57:05,933 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:05,933 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,949 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 02:57:05,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:05,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:05,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:05,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:05,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:05,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:05,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:05,960 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:57:05,960 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_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:05,964 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:05,964 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:05,964 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:05,965 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:05,999 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:06,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:06,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:06,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:06,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:06,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:06,129 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 02:57:06,129 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 02:57:06,129 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 02:57:06,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 33 states and 43 transitions. Complement of second has 4 states. [2020-11-28 02:57:06,147 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 02:57:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:57:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-11-28 02:57:06,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 02:57:06,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:06,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 02:57:06,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:06,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 02:57:06,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:06,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-11-28 02:57:06,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 02:57:06,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-11-28 02:57:06,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-11-28 02:57:06,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-11-28 02:57:06,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-28 02:57:06,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:57:06,150 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 02:57:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-28 02:57:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 02:57:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:57:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 02:57:06,152 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 02:57:06,152 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 02:57:06,152 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 02:57:06,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-28 02:57:06,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 02:57:06,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:06,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:06,153 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:06,153 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:57:06,153 INFO L794 eck$LassoCheckResult]: Stem: 871#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 869#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 870#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 861#L71 base2flt_#res := base2flt_~__retres4~0; 862#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 867#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 853#L71-1 base2flt_#res := base2flt_~__retres4~0; 854#L72-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 863#L21-2 assume !(0 == base2flt_~m % 4294967296); 868#L27-2 assume base2flt_~m % 4294967296 < 16777216; 872#L39-5 [2020-11-28 02:57:06,153 INFO L796 eck$LassoCheckResult]: Loop: 872#L39-5 assume !false; 859#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 860#L39-4 assume base2flt_~m % 4294967296 < 16777216; 872#L39-5 [2020-11-28 02:57:06,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:06,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-11-28 02:57:06,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:06,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025297278] [2020-11-28 02:57:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-28 02:57:06,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:06,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029594620] [2020-11-28 02:57:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,228 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-11-28 02:57:06,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:06,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637601980] [2020-11-28 02:57:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:06,288 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:06,288 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:06,288 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:06,288 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:06,288 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:06,288 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:06,288 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:06,288 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:06,288 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2020-11-28 02:57:06,289 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:06,289 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:06,290 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 02:57:06,302 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 02:57:06,383 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:06,383 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:06,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:06,387 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:06,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:06,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:57:06,462 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:06,463 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:06,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:06,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:06,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:06,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:06,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:06,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:06,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:06,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2020-11-28 02:57:06,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:06,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:06,465 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 02:57:06,480 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 02:57:06,561 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:06,562 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:06,567 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 02:57:06,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:06,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:06,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:06,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:06,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:06,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:06,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:06,573 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:06,577 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:57:06,578 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_d89129e8-14de-4f03-a705-06efb32bb331/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 02:57:06,584 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:06,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:06,585 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:06,585 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:06,619 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:06,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:06,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:06,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:06,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:06,707 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 02:57:06,708 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 02:57:06,708 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-28 02:57:06,717 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 31 states and 39 transitions. Complement of second has 4 states. [2020-11-28 02:57:06,717 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 02:57:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:57:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-11-28 02:57:06,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 02:57:06,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:06,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 02:57:06,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:06,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 02:57:06,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:06,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-28 02:57:06,720 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:06,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-28 02:57:06,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:57:06,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:57:06,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:57:06,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:06,720 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:06,720 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:06,720 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:06,720 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 02:57:06,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:06,721 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:06,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:57:06,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:06 BoogieIcfgContainer [2020-11-28 02:57:06,726 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:57:06,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:06,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:06,730 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:06,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02" (3/4) ... [2020-11-28 02:57:06,734 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:57:06,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:06,736 INFO L168 Benchmark]: Toolchain (without parser) took 5680.08 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 55.1 MB in the beginning and 42.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:06,737 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 45.7 MB in the beginning and 45.6 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:06,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.98 ms. Allocated memory is still 86.0 MB. Free memory was 54.7 MB in the beginning and 59.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:06,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:06,743 INFO L168 Benchmark]: Boogie Preprocessor took 34.47 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 56.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:06,744 INFO L168 Benchmark]: RCFGBuilder took 816.79 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 76.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:06,745 INFO L168 Benchmark]: BuchiAutomizer took 4401.11 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 76.3 MB in the beginning and 42.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:06,745 INFO L168 Benchmark]: Witness Printer took 6.86 ms. Allocated memory is still 125.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:06,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 45.7 MB in the beginning and 45.6 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.98 ms. Allocated memory is still 86.0 MB. Free memory was 54.7 MB in the beginning and 59.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.47 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 56.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 816.79 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 76.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4401.11 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 76.3 MB in the beginning and 42.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.86 ms. Allocated memory is still 125.8 MB. Free memory is still 42.2 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 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 281 SDtfs, 248 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 73ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...