./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3b8bf9cef197469aec7ea347f740588dd59c933 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:08:52,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:08:52,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:08:52,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:08:52,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:08:52,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:08:52,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:08:52,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:08:52,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:08:52,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:08:52,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:08:52,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:08:52,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:08:52,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:08:52,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:08:52,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:08:52,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:08:52,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:08:52,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:08:52,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:08:52,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:08:52,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:08:52,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:08:52,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:08:52,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:08:52,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:08:52,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:08:53,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:08:53,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:08:53,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:08:53,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:08:53,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:08:53,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:08:53,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:08:53,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:08:53,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:08:53,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:08:53,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:08:53,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:08:53,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:08:53,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:08:53,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:08:53,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:08:53,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:08:53,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:08:53,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:08:53,081 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:08:53,081 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:08:53,081 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:08:53,082 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:08:53,082 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:08:53,082 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:08:53,084 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:08:53,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:08:53,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:08:53,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:08:53,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:08:53,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:08:53,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:08:53,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:08:53,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:08:53,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:08:53,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:08:53,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:08:53,092 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:08:53,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:08:53,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:08:53,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:08:53,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:08:53,094 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:08:53,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:08:53,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:08:53,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:08:53,097 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:08:53,098 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:08:53,098 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3b8bf9cef197469aec7ea347f740588dd59c933 [2020-11-29 19:08:53,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:08:53,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:08:53,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:08:53,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:08:53,511 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:08:53,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-11-29 19:08:53,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/data/f967f90f9/b69d4535948e41b28be3e32b81011cf6/FLAG31fbdbc3c [2020-11-29 19:08:54,309 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:08:54,310 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2020-11-29 19:08:54,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/data/f967f90f9/b69d4535948e41b28be3e32b81011cf6/FLAG31fbdbc3c [2020-11-29 19:08:54,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/data/f967f90f9/b69d4535948e41b28be3e32b81011cf6 [2020-11-29 19:08:54,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:08:54,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:08:54,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:08:54,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:08:54,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:08:54,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:54" (1/1) ... [2020-11-29 19:08:54,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5a785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54, skipping insertion in model container [2020-11-29 19:08:54,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:54" (1/1) ... [2020-11-29 19:08:54,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:08:54,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:08:54,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:08:54,961 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:08:55,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:08:55,030 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:08:55,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55 WrapperNode [2020-11-29 19:08:55,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:08:55,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:08:55,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:08:55,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:08:55,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:08:55,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:08:55,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:08:55,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:08:55,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... [2020-11-29 19:08:55,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:08:55,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:08:55,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:08:55,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:08:55,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:08:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:08:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:08:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:08:56,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:08:56,192 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 19:08:56,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:56 BoogieIcfgContainer [2020-11-29 19:08:56,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:08:56,197 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:08:56,197 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:08:56,201 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:08:56,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:08:56,202 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:08:54" (1/3) ... [2020-11-29 19:08:56,204 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@699e75bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:08:56, skipping insertion in model container [2020-11-29 19:08:56,204 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:08:56,204 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:55" (2/3) ... [2020-11-29 19:08:56,205 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@699e75bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:08:56, skipping insertion in model container [2020-11-29 19:08:56,205 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:08:56,205 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:56" (3/3) ... [2020-11-29 19:08:56,208 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2020-11-29 19:08:56,281 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:08:56,282 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:08:56,282 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:08:56,282 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:08:56,282 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:08:56,283 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:08:56,283 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:08:56,283 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:08:56,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-11-29 19:08:56,347 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-29 19:08:56,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:08:56,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:08:56,356 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 19:08:56,356 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:08:56,357 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:08:56,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states. [2020-11-29 19:08:56,375 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-29 19:08:56,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:08:56,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:08:56,377 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 19:08:56,377 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:08:56,386 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 12#L21true assume !(0 == base2flt_~m % 4294967296); 37#L27true assume !(base2flt_~m % 4294967296 < 16777216); 32#L49-2true [2020-11-29 19:08:56,387 INFO L796 eck$LassoCheckResult]: Loop: 32#L49-2true assume !false; 59#L50true assume base2flt_~m % 4294967296 >= 33554432; 8#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 32#L49-2true [2020-11-29 19:08:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-29 19:08:56,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:56,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180464072] [2020-11-29 19:08:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:08:56,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180464072] [2020-11-29 19:08:56,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:08:56,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:08:56,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242647315] [2020-11-29 19:08:56,692 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:08:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:56,695 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-29 19:08:56,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:56,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325847080] [2020-11-29 19:08:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:56,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:56,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:56,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:56,895 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:08:56,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:08:56,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:08:56,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:08:56,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:08:56,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:56,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:08:56,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:08:56,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-11-29 19:08:56,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:08:56,899 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:08:56,919 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 19:08:56,946 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 19:08:57,150 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:08:57,151 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:57,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:08:57,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:08:57,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:08:57,212 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:57,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:08:57,226 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:57,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:08:57,278 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 19:08:57,312 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:08:57,314 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:08:57,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:08:57,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:08:57,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:08:57,314 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:08:57,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:57,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:08:57,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:08:57,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2020-11-29 19:08:57,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:08:57,315 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:08:57,316 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 19:08:57,340 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 19:08:57,468 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-11-29 19:08:57,529 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:08:57,534 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:57,548 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 19:08:57,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:08:57,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:08:57,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:08:57,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:08:57,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:08:57,560 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:08:57,560 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 19:08:57,567 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:57,617 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 19:08:57,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:08:57,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:08:57,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:08:57,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:08:57,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:08:57,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:08:57,623 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:08:57,628 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:08:57,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:08:57,635 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:57,648 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:08:57,648 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:08:57,648 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:08:57,649 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 19:08:57,688 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:08:57,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:57,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:08:57,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:08:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:57,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:08:57,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:08:57,778 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 19:08:57,795 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 19:08:57,797 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states. Second operand 3 states. [2020-11-29 19:08:57,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 71 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2020-11-29 19:08:57,894 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 19:08:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:08:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2020-11-29 19:08:57,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 19:08:57,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:08:57,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 19:08:57,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:08:57,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-29 19:08:57,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:08:57,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2020-11-29 19:08:57,931 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-11-29 19:08:57,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 79 states and 120 transitions. [2020-11-29 19:08:57,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-11-29 19:08:57,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-11-29 19:08:57,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-11-29 19:08:57,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:08:57,948 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-11-29 19:08:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-11-29 19:08:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-11-29 19:08:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 19:08:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-11-29 19:08:57,989 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-11-29 19:08:57,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:08:57,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:08:57,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:08:57,993 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-11-29 19:08:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:08:58,234 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-29 19:08:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:08:58,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-11-29 19:08:58,237 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-29 19:08:58,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-11-29 19:08:58,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-11-29 19:08:58,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-29 19:08:58,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-11-29 19:08:58,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:08:58,240 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 19:08:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-11-29 19:08:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 19:08:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:08:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-11-29 19:08:58,244 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 19:08:58,244 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 19:08:58,244 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:08:58,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-11-29 19:08:58,246 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-29 19:08:58,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:08:58,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:08:58,247 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:08:58,247 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:08:58,247 INFO L794 eck$LassoCheckResult]: Stem: 455#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 435#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 436#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 432#L71 base2flt_#res := base2flt_~__retres4~0; 433#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 454#L21-1 assume !(0 == base2flt_~m % 4294967296); 421#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L49-5 [2020-11-29 19:08:58,248 INFO L796 eck$LassoCheckResult]: Loop: 422#L49-5 assume !false; 439#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 434#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L49-5 [2020-11-29 19:08:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-29 19:08:58,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:58,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600321534] [2020-11-29 19:08:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:58,310 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 19:08:58,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600321534] [2020-11-29 19:08:58,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:08:58,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:08:58,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229770226] [2020-11-29 19:08:58,312 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:08:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:58,312 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-29 19:08:58,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:58,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911045540] [2020-11-29 19:08:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:58,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:58,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:58,333 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:58,373 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:08:58,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:08:58,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:08:58,373 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:08:58,373 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:08:58,374 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:58,374 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:08:58,374 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:08:58,374 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-11-29 19:08:58,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:08:58,374 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:08:58,376 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 19:08:58,384 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 19:08:58,504 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:08:58,504 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:58,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:08:58,517 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 19:08:58,560 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:08:58,560 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:58,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:08:58,570 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:58,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:08:58,615 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 19:08:58,658 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:08:58,661 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:08:58,661 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:08:58,661 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:08:58,661 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:08:58,661 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:08:58,661 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:58,662 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:08:58,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:08:58,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2020-11-29 19:08:58,662 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:08:58,662 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:08:58,663 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 19:08:58,716 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 19:08:58,872 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:08:58,872 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:58,880 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 19:08:58,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:08:58,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:08:58,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:08:58,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:08:58,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:08:58,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:08:58,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:08:58,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:58,921 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 19:08:58,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:08:58,923 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:08:58,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:08:58,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:08:58,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:08:58,925 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:08:58,925 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:08:58,930 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:08:58,935 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:08:58,935 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:58,954 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:08:58,955 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:08:58,955 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:08:58,955 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 19:08:58,977 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:08:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:59,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:08:59,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:08:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:59,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:08:59,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:08:59,076 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 19:08:59,076 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 19:08:59,076 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-11-29 19:08:59,104 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 19:08:59,105 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 19:08:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:08:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-11-29 19:08:59,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 19:08:59,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:08:59,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 19:08:59,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:08:59,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 19:08:59,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:08:59,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-11-29 19:08:59,108 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-29 19:08:59,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-11-29 19:08:59,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-11-29 19:08:59,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-29 19:08:59,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-11-29 19:08:59,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:08:59,111 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-11-29 19:08:59,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-11-29 19:08:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-11-29 19:08:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:08:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-11-29 19:08:59,122 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-11-29 19:08:59,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:08:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:08:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:08:59,124 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-11-29 19:08:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:08:59,226 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-11-29 19:08:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:08:59,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-11-29 19:08:59,228 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 19:08:59,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-11-29 19:08:59,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 19:08:59,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 19:08:59,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-29 19:08:59,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:08:59,230 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-29 19:08:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-29 19:08:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-29 19:08:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 19:08:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-11-29 19:08:59,234 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 19:08:59,234 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 19:08:59,234 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:08:59,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-11-29 19:08:59,235 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 19:08:59,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:08:59,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:08:59,235 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:08:59,235 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:08:59,236 INFO L794 eck$LassoCheckResult]: Stem: 673#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 654#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 652#L71 base2flt_#res := base2flt_~__retres4~0; 653#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 672#L21-1 assume !(0 == base2flt_~m % 4294967296); 642#L27-1 assume base2flt_~m % 4294967296 < 16777216; 643#L39-3 [2020-11-29 19:08:59,236 INFO L796 eck$LassoCheckResult]: Loop: 643#L39-3 assume !false; 671#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 663#L39-2 assume base2flt_~m % 4294967296 < 16777216; 643#L39-3 [2020-11-29 19:08:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:59,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-29 19:08:59,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:59,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154617542] [2020-11-29 19:08:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:59,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:59,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:59,314 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:59,315 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-29 19:08:59,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:59,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076207613] [2020-11-29 19:08:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:59,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:59,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:59,328 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-29 19:08:59,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:59,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181202382] [2020-11-29 19:08:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:59,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:59,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:59,368 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:59,408 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:08:59,408 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:08:59,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:08:59,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:08:59,409 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:08:59,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:59,409 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:08:59,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:08:59,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-11-29 19:08:59,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:08:59,409 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:08:59,410 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 19:08:59,423 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 19:08:59,513 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:08:59,513 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:08:59,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:08:59,519 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:59,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:08:59,566 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:59,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:08:59,578 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:59,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:08:59,634 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 19:08:59,682 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:08:59,685 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:08:59,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:08:59,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:08:59,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:08:59,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:08:59,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:59,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:08:59,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:08:59,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2020-11-29 19:08:59,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:08:59,686 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:08:59,687 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 19:08:59,699 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 19:08:59,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:08:59,803 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:59,812 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 19:08:59,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:08:59,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:08:59,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:08:59,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:08:59,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:08:59,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:08:59,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:08:59,823 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:08:59,851 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 19:08:59,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:08:59,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:08:59,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:08:59,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:08:59,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:08:59,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:08:59,856 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 19:08:59,873 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:08:59,875 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:08:59,875 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:08:59,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:08:59,879 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:08:59,879 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:08:59,879 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-29 19:08:59,899 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:08:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:08:59,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:08:59,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:00,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:00,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:00,079 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 19:09:00,079 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 19:09:00,079 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 19:09:00,100 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 19:09:00,101 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 19:09:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:09:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-11-29 19:09:00,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 19:09:00,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:00,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 19:09:00,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:00,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 19:09:00,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:00,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-11-29 19:09:00,104 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 19:09:00,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-11-29 19:09:00,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-11-29 19:09:00,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-11-29 19:09:00,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-29 19:09:00,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:00,115 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-29 19:09:00,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-29 19:09:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-29 19:09:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:09:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-29 19:09:00,121 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 19:09:00,121 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 19:09:00,121 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:09:00,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-29 19:09:00,122 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 19:09:00,122 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:09:00,122 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:09:00,123 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:00,123 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:09:00,124 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 776#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 777#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 774#L71 base2flt_#res := base2flt_~__retres4~0; 775#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 797#L21-1 assume !(0 == base2flt_~m % 4294967296); 764#L27-1 assume base2flt_~m % 4294967296 < 16777216; 765#L39-3 assume !false; 795#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 770#L71-1 base2flt_#res := base2flt_~__retres4~0; 771#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 794#L21-2 assume !(0 == base2flt_~m % 4294967296); 782#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 773#L49-8 [2020-11-29 19:09:00,124 INFO L796 eck$LassoCheckResult]: Loop: 773#L49-8 assume !false; 788#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 772#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 773#L49-8 [2020-11-29 19:09:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:00,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-11-29 19:09:00,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:00,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521841602] [2020-11-29 19:09:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:00,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521841602] [2020-11-29 19:09:00,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:00,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:09:00,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030851537] [2020-11-29 19:09:00,212 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:09:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:00,213 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-29 19:09:00,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:00,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430186120] [2020-11-29 19:09:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:00,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:00,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:00,242 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:09:00,271 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:00,271 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:00,271 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:00,271 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:00,271 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:09:00,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:00,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:00,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:00,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-11-29 19:09:00,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:00,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:00,272 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 19:09:00,281 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 19:09:00,390 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:00,390 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:09:00,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:09:00,412 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:00,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:09:00,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:09:00,485 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:09:00,486 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:00,486 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:00,486 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:00,486 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:00,486 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:09:00,487 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:00,487 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:00,487 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:00,487 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2020-11-29 19:09:00,487 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:00,487 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:00,488 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 19:09:00,498 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 19:09:00,627 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:00,627 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:09:00,639 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 19:09:00,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:09:00,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:09:00,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:09:00,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:09:00,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:09:00,643 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:09:00,643 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:00,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:09:00,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:09:00,650 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:09:00,658 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:09:00,658 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:09:00,658 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:09:00,658 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:00,682 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:09:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:00,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:09:00,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:00,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:00,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:00,729 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 19:09:00,730 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 19:09:00,730 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-11-29 19:09:00,762 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 19:09:00,765 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 19:09:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:09:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-11-29 19:09:00,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-29 19:09:00,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:00,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-11-29 19:09:00,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:00,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-29 19:09:00,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:00,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-11-29 19:09:00,767 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 19:09:00,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-11-29 19:09:00,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-29 19:09:00,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-11-29 19:09:00,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-29 19:09:00,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:00,768 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-29 19:09:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-29 19:09:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-11-29 19:09:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:09:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-11-29 19:09:00,785 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-11-29 19:09:00,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:09:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:09:00,786 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-11-29 19:09:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:00,849 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-11-29 19:09:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:09:00,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-11-29 19:09:00,851 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-29 19:09:00,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-11-29 19:09:00,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-11-29 19:09:00,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-11-29 19:09:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-11-29 19:09:00,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:00,852 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-11-29 19:09:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-11-29 19:09:00,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-11-29 19:09:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:09:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-11-29 19:09:00,868 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-29 19:09:00,868 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-29 19:09:00,868 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 19:09:00,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-11-29 19:09:00,868 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-29 19:09:00,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:09:00,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:09:00,869 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:00,869 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:09:00,870 INFO L794 eck$LassoCheckResult]: Stem: 1033#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1010#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1007#L71 base2flt_#res := base2flt_~__retres4~0; 1008#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1032#L21-1 assume !(0 == base2flt_~m % 4294967296); 996#L27-1 assume base2flt_~m % 4294967296 < 16777216; 997#L39-3 assume !false; 1031#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1019#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1012#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1002#L71-1 base2flt_#res := base2flt_~__retres4~0; 1003#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1029#L21-2 assume !(0 == base2flt_~m % 4294967296); 1015#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-11-29 19:09:00,870 INFO L796 eck$LassoCheckResult]: Loop: 1017#L39-5 assume !false; 1027#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1028#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1017#L39-5 [2020-11-29 19:09:00,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:00,870 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-11-29 19:09:00,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:00,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776443589] [2020-11-29 19:09:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:00,990 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 19:09:00,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776443589] [2020-11-29 19:09:00,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:00,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:09:00,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743502536] [2020-11-29 19:09:00,991 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:09:00,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:00,992 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-29 19:09:00,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:00,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691413564] [2020-11-29 19:09:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:01,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:01,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:01,018 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:09:01,060 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:01,060 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:01,060 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:01,060 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:01,060 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:09:01,061 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:01,061 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:01,061 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:01,061 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-11-29 19:09:01,061 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:01,061 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:01,062 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 19:09:01,070 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 19:09:01,159 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:01,160 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:01,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:09:01,175 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 19:09:01,198 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:09:01,198 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:01,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:09:01,202 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:01,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:09:01,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:09:01,251 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:09:01,252 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:01,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:01,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:01,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:01,253 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:09:01,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:01,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:01,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:01,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2020-11-29 19:09:01,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:01,253 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:01,254 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 19:09:01,264 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 19:09:01,335 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:01,335 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:01,339 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 19:09:01,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:09:01,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:09:01,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:09:01,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:09:01,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:09:01,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:09:01,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:09:01,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:01,372 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 19:09:01,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:09:01,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:09:01,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:09:01,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:09:01,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:09:01,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:09:01,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:09:01,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:09:01,385 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:09:01,385 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:01,388 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:09:01,388 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:09:01,388 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:09:01,388 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-29 19:09:01,412 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:09:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:01,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:09:01,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:01,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:01,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:01,543 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 19:09:01,544 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 19:09:01,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 19:09:01,571 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 19:09:01,576 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 19:09:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:09:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-11-29 19:09:01,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-29 19:09:01,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:01,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 19:09:01,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:01,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-29 19:09:01,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:01,577 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-11-29 19:09:01,578 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 19:09:01,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-11-29 19:09:01,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-11-29 19:09:01,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-11-29 19:09:01,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-11-29 19:09:01,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:01,580 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-11-29 19:09:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-11-29 19:09:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-11-29 19:09:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 19:09:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-11-29 19:09:01,583 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-11-29 19:09:01,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:01,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:09:01,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:09:01,584 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-11-29 19:09:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:01,700 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-11-29 19:09:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:09:01,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-11-29 19:09:01,710 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 19:09:01,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-11-29 19:09:01,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 19:09:01,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 19:09:01,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-29 19:09:01,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:01,712 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-29 19:09:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-29 19:09:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-11-29 19:09:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 19:09:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-11-29 19:09:01,715 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-29 19:09:01,715 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-29 19:09:01,715 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 19:09:01,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-11-29 19:09:01,715 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 19:09:01,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:09:01,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:09:01,716 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 19:09:01,716 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:09:01,716 INFO L794 eck$LassoCheckResult]: Stem: 1293#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1268#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1269#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1266#L71 base2flt_#res := base2flt_~__retres4~0; 1267#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1292#L21-1 assume !(0 == base2flt_~m % 4294967296); 1255#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1256#L39-3 assume !false; 1291#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1278#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1280#L39-3 assume !false; 1290#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1261#L71-1 base2flt_#res := base2flt_~__retres4~0; 1262#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1289#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1257#L71-2 base2flt_#res := base2flt_~__retres4~0; 1258#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1285#L21-3 assume !(0 == base2flt_~m % 4294967296); 1272#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1260#L49-11 [2020-11-29 19:09:01,716 INFO L796 eck$LassoCheckResult]: Loop: 1260#L49-11 assume !false; 1277#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1259#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1260#L49-11 [2020-11-29 19:09:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-11-29 19:09:01,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:01,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092288047] [2020-11-29 19:09:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:01,777 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 19:09:01,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092288047] [2020-11-29 19:09:01,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712331023] [2020-11-29 19:09:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:01,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:01,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:01,903 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 19:09:01,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:09:01,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 19:09:01,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491072634] [2020-11-29 19:09:01,905 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:09:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-11-29 19:09:01,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:01,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973877875] [2020-11-29 19:09:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:01,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:01,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:01,930 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:09:01,985 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:01,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:01,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:01,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:01,986 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:09:01,986 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:01,986 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:01,986 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:01,986 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-11-29 19:09:01,986 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:01,986 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:01,987 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 19:09:01,994 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 19:09:02,090 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:02,090 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:02,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:09:02,092 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:02,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:09:02,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:09:02,139 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:09:02,140 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:02,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:02,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:02,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:02,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:09:02,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:02,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:02,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:02,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2020-11-29 19:09:02,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:02,141 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:02,141 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 19:09:02,159 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 19:09:02,250 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:02,250 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:02,255 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 19:09:02,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:09:02,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:09:02,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:09:02,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:09:02,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:09:02,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:09:02,259 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 19:09:02,266 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:09:02,269 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:09:02,270 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:02,272 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:09:02,272 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:09:02,273 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:09:02,273 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 19:09:02,296 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:09:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:02,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:09:02,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:02,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:02,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:02,355 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 19:09:02,355 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 19:09:02,355 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-11-29 19:09:02,369 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 19:09:02,370 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 19:09:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:09:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-11-29 19:09:02,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-11-29 19:09:02,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:02,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-11-29 19:09:02,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:02,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-29 19:09:02,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:02,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-11-29 19:09:02,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:09:02,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-11-29 19:09:02,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-11-29 19:09:02,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-11-29 19:09:02,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-11-29 19:09:02,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:02,383 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 19:09:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-11-29 19:09:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 19:09:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 19:09:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-11-29 19:09:02,386 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 19:09:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:09:02,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:09:02,387 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-11-29 19:09:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:02,462 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-11-29 19:09:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:09:02,463 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-11-29 19:09:02,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:09:02,464 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-11-29 19:09:02,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-11-29 19:09:02,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-11-29 19:09:02,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-11-29 19:09:02,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:09:02,465 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-11-29 19:09:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-11-29 19:09:02,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-29 19:09:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 19:09:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-11-29 19:09:02,469 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 19:09:02,469 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 19:09:02,469 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 19:09:02,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-11-29 19:09:02,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:09:02,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:09:02,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:09:02,472 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 19:09:02,472 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:09:02,472 INFO L794 eck$LassoCheckResult]: Stem: 1604#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1582#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1583#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1579#L71 base2flt_#res := base2flt_~__retres4~0; 1580#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1603#L21-1 assume !(0 == base2flt_~m % 4294967296); 1570#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1571#L39-3 assume !false; 1602#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1590#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1591#L39-3 assume !false; 1607#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1609#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1584#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1574#L71-1 base2flt_#res := base2flt_~__retres4~0; 1575#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1600#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1572#L71-2 base2flt_#res := base2flt_~__retres4~0; 1573#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1596#L21-3 assume !(0 == base2flt_~m % 4294967296); 1585#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1586#L39-7 [2020-11-29 19:09:02,472 INFO L796 eck$LassoCheckResult]: Loop: 1586#L39-7 assume !false; 1594#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1595#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1586#L39-7 [2020-11-29 19:09:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-11-29 19:09:02,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:02,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306836909] [2020-11-29 19:09:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:02,630 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 19:09:02,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306836909] [2020-11-29 19:09:02,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365775547] [2020-11-29 19:09:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:02,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:09:02,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:02,880 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 19:09:02,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:09:02,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 19:09:02,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941208279] [2020-11-29 19:09:02,882 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:09:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:02,883 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-11-29 19:09:02,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:02,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455467808] [2020-11-29 19:09:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:02,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:09:02,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:09:02,908 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:09:02,971 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:02,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:02,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:02,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:02,971 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:09:02,971 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:02,971 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:02,971 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:02,971 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-11-29 19:09:02,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:02,972 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:02,972 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 19:09:02,983 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 19:09:03,067 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:03,068 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:03,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:09:03,080 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 19:09:03,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:09:03,119 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:03,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:09:03,125 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:03,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:09:03,166 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 19:09:03,203 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:09:03,204 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:09:03,204 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:09:03,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:09:03,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:09:03,204 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:09:03,204 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:09:03,204 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:09:03,204 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:09:03,204 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2020-11-29 19:09:03,205 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:09:03,205 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:09:03,205 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 19:09:03,212 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 19:09:03,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:09:03,313 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:03,323 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 19:09:03,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:09:03,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:09:03,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:09:03,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:09:03,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:09:03,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:09:03,329 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 19:09:03,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:03,384 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 19:09:03,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:09:03,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:09:03,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:09:03,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:09:03,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:09:03,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:09:03,391 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 19:09:03,398 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:09:03,406 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:09:03,406 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_3ac0d22e-c141-4d4d-9e34-9a70c9b927df/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 19:09:03,410 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:09:03,410 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:09:03,410 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:09:03,410 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 19:09:03,451 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:09:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:03,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:09:03,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:03,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:03,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:03,632 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 19:09:03,632 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 19:09:03,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 19:09:03,644 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 19:09:03,645 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 19:09:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:09:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-11-29 19:09:03,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 19:09:03,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:03,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-29 19:09:03,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:03,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-11-29 19:09:03,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:09:03,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-11-29 19:09:03,647 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:09:03,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-11-29 19:09:03,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:09:03,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:09:03,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:09:03,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:09:03,647 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:09:03,647 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:09:03,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:03,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:09:03,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:09:03,648 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-11-29 19:09:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:03,648 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 19:09:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:09:03,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:09:03,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:09:03,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:09:03,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:09:03,649 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 19:09:03,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:09:03,649 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:09:03,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:09:03,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:09:03 BoogieIcfgContainer [2020-11-29 19:09:03,657 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:09:03,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:09:03,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:09:03,658 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:09:03,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:56" (3/4) ... [2020-11-29 19:09:03,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:09:03,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:09:03,665 INFO L168 Benchmark]: Toolchain (without parser) took 9049.05 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 67.9 MB in the beginning and 110.8 MB in the end (delta: -42.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:09:03,668 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:09:03,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.56 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 60.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:09:03,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.68 ms. Allocated memory is still 92.3 MB. Free memory was 60.6 MB in the beginning and 58.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:09:03,671 INFO L168 Benchmark]: Boogie Preprocessor took 44.57 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 56.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:09:03,674 INFO L168 Benchmark]: RCFGBuilder took 1055.63 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 54.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:09:03,675 INFO L168 Benchmark]: BuchiAutomizer took 7460.06 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 54.5 MB in the beginning and 110.8 MB in the end (delta: -56.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:09:03,675 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 142.6 MB. Free memory was 110.8 MB in the beginning and 110.8 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:09:03,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.56 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 60.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.68 ms. Allocated memory is still 92.3 MB. Free memory was 60.6 MB in the beginning and 58.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.57 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 56.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1055.63 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 54.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7460.06 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 54.5 MB in the beginning and 110.8 MB in the end (delta: -56.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.71 ms. Allocated memory is still 142.6 MB. Free memory was 110.8 MB in the beginning and 110.8 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.3s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 5.3s. Construction of modules took 0.5s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 527 SDtfs, 344 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms 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...