./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.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_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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 6029375071a37af887817933cb6d522f173528f0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:55:30,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:55:30,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:55:30,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:55:30,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:55:30,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:55:30,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:55:30,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:55:30,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:55:30,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:55:30,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:55:30,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:55:30,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:55:30,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:55:30,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:55:30,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:55:30,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:55:30,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:55:30,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:55:30,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:55:30,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:55:30,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:55:30,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:55:30,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:55:30,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:55:30,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:55:30,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:55:30,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:55:30,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:55:30,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:55:30,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:55:30,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:55:30,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:55:30,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:55:30,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:55:30,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:55:30,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:55:30,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:55:30,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:55:30,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:55:30,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:55:30,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:55:30,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:55:30,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:55:30,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:55:30,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:55:30,336 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:55:30,336 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:55:30,336 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:55:30,336 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:55:30,336 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:55:30,337 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:55:30,338 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:55:30,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:55:30,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:55:30,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:55:30,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:55:30,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:55:30,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:55:30,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:55:30,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:55:30,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:55:30,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:55:30,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:55:30,340 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:55:30,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:55:30,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:55:30,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:55:30,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:55:30,341 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:55:30,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:55:30,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:55:30,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:55:30,342 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:55:30,345 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:55:30,345 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_34cb6614-a783-4aca-9728-be3a7f35279f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2020-11-29 23:55:30,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:55:30,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:55:30,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:55:30,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:55:30,723 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:55:30,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-11-29 23:55:30,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/data/36c9c6dbd/82cc0ffdb40c43adb51953904357db0c/FLAG4da0ac402 [2020-11-29 23:55:31,255 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:55:31,256 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-11-29 23:55:31,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/data/36c9c6dbd/82cc0ffdb40c43adb51953904357db0c/FLAG4da0ac402 [2020-11-29 23:55:31,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/data/36c9c6dbd/82cc0ffdb40c43adb51953904357db0c [2020-11-29 23:55:31,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:55:31,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:55:31,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:31,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:55:31,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:55:31,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c04a06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31, skipping insertion in model container [2020-11-29 23:55:31,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:55:31,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:55:31,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:31,951 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:55:31,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:32,005 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:55:32,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32 WrapperNode [2020-11-29 23:55:32,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:32,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:32,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:55:32,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:55:32,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:32,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:55:32,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:55:32,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:55:32,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... [2020-11-29 23:55:32,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:55:32,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:55:32,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:55:32,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:55:32,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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 [2020-11-29 23:55:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:55:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:55:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:55:32,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:55:32,894 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:55:32,894 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 23:55:32,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:32 BoogieIcfgContainer [2020-11-29 23:55:32,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:55:32,896 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:55:32,897 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:55:32,900 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:55:32,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:32,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:55:31" (1/3) ... [2020-11-29 23:55:32,905 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a0fbce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:55:32, skipping insertion in model container [2020-11-29 23:55:32,905 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:32,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:32" (2/3) ... [2020-11-29 23:55:32,906 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a0fbce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:55:32, skipping insertion in model container [2020-11-29 23:55:32,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:32,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:32" (3/3) ... [2020-11-29 23:55:32,907 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-11-29 23:55:32,947 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:55:32,947 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:55:32,947 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:55:32,947 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:55:32,948 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:55:32,948 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:55:32,948 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:55:32,948 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:55:32,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-11-29 23:55:32,993 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-29 23:55:32,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:32,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:33,000 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 23:55:33,000 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:33,000 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:55:33,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-11-29 23:55:33,007 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-29 23:55:33,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:33,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:33,008 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 23:55:33,008 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:33,015 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 15#L21true assume !(0 == base2flt_~m % 4294967296); 44#L27true assume !(base2flt_~m % 4294967296 < 16777216); 41#L49-2true [2020-11-29 23:55:33,015 INFO L796 eck$LassoCheckResult]: Loop: 41#L49-2true assume !false; 64#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 41#L49-2true [2020-11-29 23:55:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:33,020 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-29 23:55:33,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:33,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323335362] [2020-11-29 23:55:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:33,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323335362] [2020-11-29 23:55:33,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:33,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:55:33,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075206695] [2020-11-29 23:55:33,204 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:55:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:33,205 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-29 23:55:33,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:33,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757264731] [2020-11-29 23:55:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:33,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:33,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:33,276 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:33,338 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:33,339 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:33,339 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:33,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:33,340 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:33,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:33,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:33,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:33,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2020-11-29 23:55:33,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:33,341 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:33,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:33,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:33,501 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:33,502 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:33,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:33,519 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:33,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:33,566 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_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:33,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:33,575 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:33,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:33,625 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:33,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:33,668 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:33,668 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:33,668 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:33,668 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:33,668 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:33,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:33,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:33,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:33,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2020-11-29 23:55:33,669 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:33,669 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:33,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:33,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:33,811 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:33,816 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:33,826 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 [2020-11-29 23:55:33,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:33,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:33,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:33,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:33,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:33,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:33,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:33,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:33,886 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 [2020-11-29 23:55:33,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:33,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:33,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:33,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:33,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:33,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:33,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:33,894 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:33,899 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:33,899 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_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:33,965 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:33,965 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:33,965 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:33,966 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,002 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:34,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:34,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:34,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:34,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:34,111 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 [2020-11-29 23:55:34,113 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2020-11-29 23:55:34,213 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 206 states and 346 transitions. Complement of second has 6 states. [2020-11-29 23:55:34,214 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 [2020-11-29 23:55:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:55:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2020-11-29 23:55:34,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 23:55:34,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:34,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 23:55:34,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:34,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-29 23:55:34,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:34,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 346 transitions. [2020-11-29 23:55:34,236 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-11-29 23:55:34,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 79 states and 120 transitions. [2020-11-29 23:55:34,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-11-29 23:55:34,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-11-29 23:55:34,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-11-29 23:55:34,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:34,257 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-11-29 23:55:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-11-29 23:55:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-11-29 23:55:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 23:55:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-11-29 23:55:34,302 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-11-29 23:55:34,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:34,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:55:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:55:34,307 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-11-29 23:55:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:34,391 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-29 23:55:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:55:34,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-11-29 23:55:34,394 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-29 23:55:34,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-11-29 23:55:34,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-11-29 23:55:34,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-29 23:55:34,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-11-29 23:55:34,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:34,396 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 23:55:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-11-29 23:55:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 23:55:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:55:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-11-29 23:55:34,407 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 23:55:34,407 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 23:55:34,407 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:55:34,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-11-29 23:55:34,408 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-29 23:55:34,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:34,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:34,411 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:34,411 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:34,411 INFO L794 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 439#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 440#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 436#L71 base2flt_#res := base2flt_~__retres4~0; 437#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 458#L21-1 assume !(0 == base2flt_~m % 4294967296); 425#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 426#L49-5 [2020-11-29 23:55:34,411 INFO L796 eck$LassoCheckResult]: Loop: 426#L49-5 assume !false; 443#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 438#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 426#L49-5 [2020-11-29 23:55:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-29 23:55:34,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:34,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542979544] [2020-11-29 23:55:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:34,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542979544] [2020-11-29 23:55:34,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:34,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:55:34,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284784013] [2020-11-29 23:55:34,484 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:55:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-29 23:55:34,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:34,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776873189] [2020-11-29 23:55:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:34,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:34,501 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:34,525 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:34,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:34,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:34,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:34,525 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:34,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:34,526 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:34,526 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2020-11-29 23:55:34,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:34,526 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:34,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,699 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:34,699 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:34,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:34,709 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 [2020-11-29 23:55:34,749 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:34,749 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_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:34,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:34,759 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:34,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:34,805 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,846 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:34,848 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:34,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:34,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:34,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:34,849 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:34,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:34,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:34,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2020-11-29 23:55:34,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:34,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:34,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:34,987 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:34,987 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:34,997 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 [2020-11-29 23:55:34,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:34,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:34,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:34,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:34,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:35,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:35,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:35,006 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,045 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 [2020-11-29 23:55:35,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:35,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:35,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:35,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:35,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:35,048 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:35,048 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:35,052 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:35,061 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:35,061 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_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:35,070 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:35,071 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:35,071 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-29 23:55:35,105 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:35,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:35,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:35,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:35,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:35,164 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 [2020-11-29 23:55:35,164 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-11-29 23:55:35,186 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 63 states and 85 transitions. Complement of second has 5 states. [2020-11-29 23:55:35,187 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 [2020-11-29 23:55:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:55:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-11-29 23:55:35,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 23:55:35,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:35,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 23:55:35,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:35,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 23:55:35,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:35,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-11-29 23:55:35,190 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-29 23:55:35,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-11-29 23:55:35,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-11-29 23:55:35,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-29 23:55:35,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-11-29 23:55:35,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:35,192 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-11-29 23:55:35,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-11-29 23:55:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-11-29 23:55:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 23:55:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-11-29 23:55:35,196 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-11-29 23:55:35,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:55:35,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:55:35,197 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-11-29 23:55:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:35,265 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-11-29 23:55:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:55:35,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-11-29 23:55:35,267 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 23:55:35,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-11-29 23:55:35,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 23:55:35,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 23:55:35,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-29 23:55:35,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:35,268 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-29 23:55:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-29 23:55:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-29 23:55:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 23:55:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-11-29 23:55:35,270 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 23:55:35,270 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 23:55:35,271 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:55:35,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-11-29 23:55:35,271 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 23:55:35,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:35,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:35,272 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:35,272 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:35,272 INFO L794 eck$LassoCheckResult]: Stem: 677#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 658#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 659#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 656#L71 base2flt_#res := base2flt_~__retres4~0; 657#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 676#L21-1 assume !(0 == base2flt_~m % 4294967296); 646#L27-1 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-11-29 23:55:35,272 INFO L796 eck$LassoCheckResult]: Loop: 647#L39-3 assume !false; 675#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 667#L39-2 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-11-29 23:55:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-29 23:55:35,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:35,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506221934] [2020-11-29 23:55:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,341 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:35,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,352 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-29 23:55:35,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:35,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396826428] [2020-11-29 23:55:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,362 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-29 23:55:35,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:35,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816341921] [2020-11-29 23:55:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:35,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:35,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:35,471 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:35,471 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:35,471 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:35,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:35,472 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:35,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:35,472 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:35,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2020-11-29 23:55:35,472 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:35,472 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:35,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,574 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:35,574 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:35,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:35,621 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:35,621 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_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:35,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:35,640 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:35,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:35,687 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,728 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:35,730 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:35,730 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:35,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:35,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:35,731 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:35,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,731 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:35,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:35,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2020-11-29 23:55:35,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:35,731 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:35,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:35,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:35,839 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:35,851 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 [2020-11-29 23:55:35,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:35,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:35,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:35,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:35,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:35,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:35,859 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:35,903 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 [2020-11-29 23:55:35,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:35,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:35,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:35,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:35,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:35,906 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:35,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,909 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:35,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:35,913 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_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:35,920 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:35,920 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:35,921 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:35,921 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:35,956 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,068 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 [2020-11-29 23:55:36,068 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 23:55:36,083 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 39 states and 50 transitions. Complement of second has 5 states. [2020-11-29 23:55:36,084 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 [2020-11-29 23:55:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 23:55:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-11-29 23:55:36,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 23:55:36,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 23:55:36,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 23:55:36,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-11-29 23:55:36,086 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 23:55:36,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-11-29 23:55:36,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-11-29 23:55:36,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-11-29 23:55:36,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-29 23:55:36,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:36,088 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-29 23:55:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-29 23:55:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-29 23:55:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:55:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-29 23:55:36,092 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 23:55:36,093 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 23:55:36,093 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:55:36,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-29 23:55:36,093 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 23:55:36,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:36,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:36,094 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:36,094 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:36,095 INFO L794 eck$LassoCheckResult]: Stem: 802#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 780#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 781#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L71 base2flt_#res := base2flt_~__retres4~0; 779#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 801#L21-1 assume !(0 == base2flt_~m % 4294967296); 768#L27-1 assume base2flt_~m % 4294967296 < 16777216; 769#L39-3 assume !false; 799#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 774#L71-1 base2flt_#res := base2flt_~__retres4~0; 775#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 798#L21-2 assume !(0 == base2flt_~m % 4294967296); 786#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 777#L49-8 [2020-11-29 23:55:36,095 INFO L796 eck$LassoCheckResult]: Loop: 777#L49-8 assume !false; 792#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 776#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 777#L49-8 [2020-11-29 23:55:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-11-29 23:55:36,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929461373] [2020-11-29 23:55:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929461373] [2020-11-29 23:55:36,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:36,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:55:36,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072004949] [2020-11-29 23:55:36,178 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:55:36,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,178 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-29 23:55:36,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984019467] [2020-11-29 23:55:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,190 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:36,229 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:36,230 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:36,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:36,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:36,230 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:36,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:36,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:36,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2020-11-29 23:55:36,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:36,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:36,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,350 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:36,351 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:36,372 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:36,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:36,427 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,463 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:36,464 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:36,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:36,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:36,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:36,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:36,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:36,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:36,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2020-11-29 23:55:36,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:36,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:36,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,593 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:36,594 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,605 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 [2020-11-29 23:55:36,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:36,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:36,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:36,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:36,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:36,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:36,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:36,611 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:36,617 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:36,617 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_34cb6614-a783-4aca-9728-be3a7f35279f/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 [2020-11-29 23:55:36,621 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:36,621 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:36,621 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:36,621 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-29 23:55:36,644 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:36,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:36,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,718 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 [2020-11-29 23:55:36,718 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-11-29 23:55:36,735 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2020-11-29 23:55:36,736 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 [2020-11-29 23:55:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:55:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-11-29 23:55:36,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-29 23:55:36,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-11-29 23:55:36,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-29 23:55:36,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:36,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-11-29 23:55:36,738 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 23:55:36,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-11-29 23:55:36,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-29 23:55:36,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-11-29 23:55:36,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-29 23:55:36,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:36,740 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-29 23:55:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-29 23:55:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-11-29 23:55:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 23:55:36,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-11-29 23:55:36,742 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-11-29 23:55:36,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:55:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:55:36,743 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-11-29 23:55:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:36,775 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-11-29 23:55:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:55:36,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-11-29 23:55:36,777 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-29 23:55:36,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-11-29 23:55:36,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-11-29 23:55:36,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-11-29 23:55:36,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-11-29 23:55:36,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:36,778 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-11-29 23:55:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-11-29 23:55:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-11-29 23:55:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 23:55:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-11-29 23:55:36,780 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-29 23:55:36,780 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-29 23:55:36,780 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:55:36,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-11-29 23:55:36,781 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-29 23:55:36,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:36,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:36,782 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:36,782 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:36,782 INFO L794 eck$LassoCheckResult]: Stem: 1037#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1013#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1014#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1011#L71 base2flt_#res := base2flt_~__retres4~0; 1012#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1036#L21-1 assume !(0 == base2flt_~m % 4294967296); 1000#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1001#L39-3 assume !false; 1035#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1023#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1016#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1006#L71-1 base2flt_#res := base2flt_~__retres4~0; 1007#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1033#L21-2 assume !(0 == base2flt_~m % 4294967296); 1019#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-11-29 23:55:36,782 INFO L796 eck$LassoCheckResult]: Loop: 1021#L39-5 assume !false; 1031#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1032#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-11-29 23:55:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,783 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-11-29 23:55:36,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865358330] [2020-11-29 23:55:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:36,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865358330] [2020-11-29 23:55:36,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:36,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:36,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883886822] [2020-11-29 23:55:36,900 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:55:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:36,900 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-29 23:55:36,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:36,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004046784] [2020-11-29 23:55:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:36,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:36,913 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:36,940 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:36,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:36,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:36,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:36,940 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:36,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:36,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:36,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:36,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2020-11-29 23:55:36,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:36,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:36,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:36,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,033 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:37,033 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/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) [2020-11-29 23:55:37,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,055 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:37,091 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_34cb6614-a783-4aca-9728-be3a7f35279f/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,094 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:37,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:37,160 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:37,162 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:37,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:37,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:37,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:37,162 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:37,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:37,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:37,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2020-11-29 23:55:37,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:37,163 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:37,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,250 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:37,250 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:37,255 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 [2020-11-29 23:55:37,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:37,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:37,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:37,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:37,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:37,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:37,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,304 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 [2020-11-29 23:55:37,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:37,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:37,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:37,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:37,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:37,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:37,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:55:37,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:37,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:37,316 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_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:37,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:37,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:37,320 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:37,320 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:37,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:37,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:37,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:37,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:37,447 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 [2020-11-29 23:55:37,447 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 23:55:37,465 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 56 states and 69 transitions. Complement of second has 5 states. [2020-11-29 23:55:37,468 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 [2020-11-29 23:55:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 23:55:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-11-29 23:55:37,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-29 23:55:37,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:37,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 23:55:37,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:37,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-29 23:55:37,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:37,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-11-29 23:55:37,470 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 23:55:37,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-11-29 23:55:37,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-11-29 23:55:37,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-11-29 23:55:37,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-11-29 23:55:37,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:37,472 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-11-29 23:55:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-11-29 23:55:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-11-29 23:55:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 23:55:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-11-29 23:55:37,475 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-11-29 23:55:37,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:37,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:37,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:37,475 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-11-29 23:55:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:37,572 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-11-29 23:55:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:37,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-11-29 23:55:37,573 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 23:55:37,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-11-29 23:55:37,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 23:55:37,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 23:55:37,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-29 23:55:37,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:37,574 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-29 23:55:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-29 23:55:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-11-29 23:55:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 23:55:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-11-29 23:55:37,577 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-29 23:55:37,577 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-29 23:55:37,577 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 23:55:37,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-11-29 23:55:37,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 23:55:37,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:37,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:37,578 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:37,578 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:37,579 INFO L794 eck$LassoCheckResult]: Stem: 1297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1272#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1273#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1270#L71 base2flt_#res := base2flt_~__retres4~0; 1271#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1296#L21-1 assume !(0 == base2flt_~m % 4294967296); 1259#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1260#L39-3 assume !false; 1295#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1282#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1284#L39-3 assume !false; 1294#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1265#L71-1 base2flt_#res := base2flt_~__retres4~0; 1266#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1293#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1261#L71-2 base2flt_#res := base2flt_~__retres4~0; 1262#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1289#L21-3 assume !(0 == base2flt_~m % 4294967296); 1276#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1264#L49-11 [2020-11-29 23:55:37,579 INFO L796 eck$LassoCheckResult]: Loop: 1264#L49-11 assume !false; 1281#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1263#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1264#L49-11 [2020-11-29 23:55:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-11-29 23:55:37,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583311499] [2020-11-29 23:55:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:37,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583311499] [2020-11-29 23:55:37,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023265440] [2020-11-29 23:55:37,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:55:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:37,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:37,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:37,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:55:37,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 23:55:37,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393265662] [2020-11-29 23:55:37,771 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:55:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-11-29 23:55:37,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:37,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386852990] [2020-11-29 23:55:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:37,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:37,791 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:37,824 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:37,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:37,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:37,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:37,824 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:37,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:37,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:37,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2020-11-29 23:55:37,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:37,825 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:37,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:37,945 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:37,945 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:37,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:37,949 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:37,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:37,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:55:38,004 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:38,005 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:38,005 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:38,005 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:38,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:38,006 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:38,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:38,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:38,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2020-11-29 23:55:38,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:38,006 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:38,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,117 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:38,117 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:38,130 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 [2020-11-29 23:55:38,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:38,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:38,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:38,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:38,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:38,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:38,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,152 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:38,161 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:38,161 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_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:38,168 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:38,169 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:38,169 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:38,169 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,204 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:38,266 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 [2020-11-29 23:55:38,266 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-11-29 23:55:38,273 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 46 states and 59 transitions. Complement of second has 4 states. [2020-11-29 23:55:38,274 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 [2020-11-29 23:55:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:55:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-11-29 23:55:38,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-11-29 23:55:38,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-11-29 23:55:38,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-29 23:55:38,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:38,276 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-11-29 23:55:38,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:55:38,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-11-29 23:55:38,277 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-11-29 23:55:38,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-11-29 23:55:38,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-11-29 23:55:38,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:38,277 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 23:55:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-11-29 23:55:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 23:55:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 23:55:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-11-29 23:55:38,279 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 23:55:38,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:38,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:55:38,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:38,285 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-11-29 23:55:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:38,325 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-11-29 23:55:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:55:38,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-11-29 23:55:38,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:55:38,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-11-29 23:55:38,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-11-29 23:55:38,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-11-29 23:55:38,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-11-29 23:55:38,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:55:38,327 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-11-29 23:55:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-11-29 23:55:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-29 23:55:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 23:55:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-11-29 23:55:38,329 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 23:55:38,329 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 23:55:38,329 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 23:55:38,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-11-29 23:55:38,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:55:38,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:38,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:38,330 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:38,330 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:55:38,330 INFO L794 eck$LassoCheckResult]: Stem: 1608#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1586#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1587#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1583#L71 base2flt_#res := base2flt_~__retres4~0; 1584#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1607#L21-1 assume !(0 == base2flt_~m % 4294967296); 1574#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1575#L39-3 assume !false; 1606#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1594#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1595#L39-3 assume !false; 1611#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1613#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1588#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1578#L71-1 base2flt_#res := base2flt_~__retres4~0; 1579#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1604#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1576#L71-2 base2flt_#res := base2flt_~__retres4~0; 1577#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1600#L21-3 assume !(0 == base2flt_~m % 4294967296); 1589#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-11-29 23:55:38,331 INFO L796 eck$LassoCheckResult]: Loop: 1590#L39-7 assume !false; 1598#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1599#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-11-29 23:55:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:38,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-11-29 23:55:38,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:38,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992829073] [2020-11-29 23:55:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:38,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992829073] [2020-11-29 23:55:38,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77246281] [2020-11-29 23:55:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:55:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:38,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:55:38,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:38,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:55:38,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 23:55:38,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453818661] [2020-11-29 23:55:38,641 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:55:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-11-29 23:55:38,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:38,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213096330] [2020-11-29 23:55:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:38,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:38,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:38,648 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:38,686 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:38,687 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:38,687 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:38,687 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:38,687 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:55:38,687 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,687 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:38,687 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:38,687 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2020-11-29 23:55:38,687 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:38,687 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:38,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,774 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:38,774 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:38,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:38,780 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,820 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:55:38,820 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_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:38,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:55:38,826 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:38,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:55:38,869 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,895 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:55:38,896 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:55:38,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:55:38,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:55:38,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:55:38,896 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:55:38,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:38,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:55:38,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:55:38,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2020-11-29 23:55:38,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:55:38,896 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:55:38,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:38,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:55:39,001 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:55:39,001 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:39,004 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 [2020-11-29 23:55:39,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:39,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:39,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:39,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:39,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:39,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:39,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:39,012 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:39,054 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 [2020-11-29 23:55:39,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:55:39,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:55:39,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:55:39,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:55:39,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:55:39,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:55:39,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:39,060 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:55:39,063 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:55:39,063 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_34cb6614-a783-4aca-9728-be3a7f35279f/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:55:39,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:55:39,066 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:55:39,066 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:55:39,067 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:55:39,101 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:55:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:55:39,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:39,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:55:39,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:39,213 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 [2020-11-29 23:55:39,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 23:55:39,227 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 4 states. [2020-11-29 23:55:39,228 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 [2020-11-29 23:55:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 23:55:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-11-29 23:55:39,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 23:55:39,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:39,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-29 23:55:39,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:39,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-11-29 23:55:39,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:55:39,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-11-29 23:55:39,230 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:55:39,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-11-29 23:55:39,230 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:55:39,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:55:39,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:55:39,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:39,231 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:39,231 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:39,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:39,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:55:39,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:55:39,232 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-11-29 23:55:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:39,232 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 23:55:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:55:39,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 23:55:39,233 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:55:39,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:55:39,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:55:39,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:55:39,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:55:39,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:39,234 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:39,234 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:39,234 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:55:39,234 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 23:55:39,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:55:39,234 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:55:39,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:55:39,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:55:39 BoogieIcfgContainer [2020-11-29 23:55:39,240 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:55:39,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:55:39,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:55:39,241 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:55:39,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:32" (3/4) ... [2020-11-29 23:55:39,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:55:39,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:55:39,246 INFO L168 Benchmark]: Toolchain (without parser) took 7607.89 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.0 MB in the beginning and 91.5 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:39,247 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 74.4 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:39,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.71 ms. Allocated memory is still 100.7 MB. Free memory was 65.9 MB in the beginning and 75.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:39,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.42 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 73.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:39,249 INFO L168 Benchmark]: Boogie Preprocessor took 32.21 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 71.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:39,249 INFO L168 Benchmark]: RCFGBuilder took 793.97 ms. Allocated memory is still 100.7 MB. Free memory was 71.5 MB in the beginning and 44.2 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:55:39,250 INFO L168 Benchmark]: BuchiAutomizer took 6343.85 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 43.8 MB in the beginning and 92.5 MB in the end (delta: -48.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:39,250 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 121.6 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:55:39,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 74.4 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.71 ms. Allocated memory is still 100.7 MB. Free memory was 65.9 MB in the beginning and 75.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.42 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 73.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.21 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 71.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 793.97 ms. Allocated memory is still 100.7 MB. Free memory was 71.5 MB in the beginning and 44.2 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6343.85 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 43.8 MB in the beginning and 92.5 MB in the end (delta: -48.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.29 ms. Allocated memory is still 121.6 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.3s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 528 SDtfs, 345 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...