./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 9a8cb7a54337f31cc721bc63892cae8fcf685402 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:21:41,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:21:41,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:21:41,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:21:41,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:21:41,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:21:41,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:21:41,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:21:41,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:21:41,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:21:41,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:21:41,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:21:41,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:21:41,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:21:41,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:21:41,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:21:41,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:21:41,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:21:41,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:21:41,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:21:41,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:21:41,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:21:41,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:21:41,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:21:41,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:21:41,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:21:41,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:21:41,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:21:41,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:21:41,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:21:41,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:21:41,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:21:41,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:21:41,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:21:41,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:21:41,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:21:41,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:21:41,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:21:41,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:21:41,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:21:41,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:21:41,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 05:21:41,100 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:21:41,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:21:41,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:21:41,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:21:41,102 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:21:41,102 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 05:21:41,102 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 05:21:41,102 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 05:21:41,103 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 05:21:41,103 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 05:21:41,103 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 05:21:41,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:21:41,103 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:21:41,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:21:41,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:21:41,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:21:41,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:21:41,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 05:21:41,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 05:21:41,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 05:21:41,105 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:21:41,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:21:41,105 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 05:21:41,105 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:21:41,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 05:21:41,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:21:41,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:21:41,106 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 05:21:41,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:21:41,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:21:41,107 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 05:21:41,119 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 05:21:41,120 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 -> 9a8cb7a54337f31cc721bc63892cae8fcf685402 [2019-11-20 05:21:41,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:21:41,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:21:41,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:21:41,292 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:21:41,296 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:21:41,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2019-11-20 05:21:41,358 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/data/8965f7927/2bcd2057b80b4fd0b26f9c93e10a0276/FLAGce19d3d96 [2019-11-20 05:21:41,714 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:21:41,715 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2019-11-20 05:21:41,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/data/8965f7927/2bcd2057b80b4fd0b26f9c93e10a0276/FLAGce19d3d96 [2019-11-20 05:21:42,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/data/8965f7927/2bcd2057b80b4fd0b26f9c93e10a0276 [2019-11-20 05:21:42,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:21:42,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:21:42,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:21:42,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:21:42,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:21:42,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed8d722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42, skipping insertion in model container [2019-11-20 05:21:42,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,113 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:21:42,138 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:21:42,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:21:42,439 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:21:42,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:21:42,531 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:21:42,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42 WrapperNode [2019-11-20 05:21:42,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:21:42,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:21:42,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:21:42,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:21:42,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:21:42,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:21:42,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:21:42,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:21:42,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... [2019-11-20 05:21:42,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:21:42,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:21:42,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:21:42,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:21:42,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:42,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:21:42,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:21:43,167 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:21:43,167 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-20 05:21:43,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:21:43 BoogieIcfgContainer [2019-11-20 05:21:43,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:21:43,169 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 05:21:43,169 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 05:21:43,172 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 05:21:43,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:21:43,172 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 05:21:42" (1/3) ... [2019-11-20 05:21:43,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19d32a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:21:43, skipping insertion in model container [2019-11-20 05:21:43,173 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:21:43,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:21:42" (2/3) ... [2019-11-20 05:21:43,174 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19d32a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:21:43, skipping insertion in model container [2019-11-20 05:21:43,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:21:43,174 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:21:43" (3/3) ... [2019-11-20 05:21:43,175 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2019-11-20 05:21:43,211 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 05:21:43,212 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 05:21:43,212 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 05:21:43,212 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:21:43,212 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:21:43,212 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 05:21:43,212 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:21:43,212 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 05:21:43,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-20 05:21:43,250 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-20 05:21:43,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:43,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:43,257 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 05:21:43,257 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:43,257 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 05:21:43,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-11-20 05:21:43,263 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-20 05:21:43,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:43,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:43,263 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 05:21:43,263 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:43,271 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-11-20 05:21:43,271 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2019-11-20 05:21:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:43,276 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-20 05:21:43,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:43,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379623501] [2019-11-20 05:21:43,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:43,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379623501] [2019-11-20 05:21:43,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:21:43,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 05:21:43,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503911988] [2019-11-20 05:21:43,409 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:21:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-20 05:21:43,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:43,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157326443] [2019-11-20 05:21:43,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:43,442 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:43,482 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:43,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:43,483 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:43,483 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:43,484 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:43,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:43,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:43,484 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:43,484 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2019-11-20 05:21:43,484 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:43,485 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:43,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:43,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:43,627 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:43,628 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:43,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:43,636 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:43,656 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:21:43,656 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:43,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:43,668 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:43,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:43,685 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 [2019-11-20 05:21:43,700 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:43,703 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:43,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:43,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:43,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:43,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:43,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:43,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:43,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:43,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2019-11-20 05:21:43,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:43,704 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:43,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:43,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:43,826 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:43,831 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:43,843 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 [2019-11-20 05:21:43,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:43,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:43,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:43,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:43,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:43,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:43,851 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 [2019-11-20 05:21:43,856 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:43,868 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 [2019-11-20 05:21:43,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:43,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:43,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:43,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:43,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:43,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:43,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:43,878 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:43,881 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:43,882 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:43,896 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:43,896 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:21:43,896 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:43,897 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-20 05:21:43,905 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:43,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:43,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:43,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:43,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:43,994 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 [2019-11-20 05:21:44,000 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-11-20 05:21:44,065 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2019-11-20 05:21:44,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:21:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-11-20 05:21:44,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-20 05:21:44,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:44,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:21:44,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:44,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-20 05:21:44,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:44,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-11-20 05:21:44,095 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-20 05:21:44,104 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-11-20 05:21:44,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-20 05:21:44,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-20 05:21:44,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-20 05:21:44,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:44,108 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-20 05:21:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-20 05:21:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-20 05:21:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 05:21:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-20 05:21:44,142 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-20 05:21:44,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:21:44,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:21:44,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:21:44,145 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-20 05:21:44,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:21:44,212 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-20 05:21:44,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:21:44,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-20 05:21:44,213 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-20 05:21:44,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-20 05:21:44,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-20 05:21:44,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-20 05:21:44,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-20 05:21:44,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:21:44,215 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-20 05:21:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-20 05:21:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-20 05:21:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-20 05:21:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-20 05:21:44,218 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-20 05:21:44,218 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-20 05:21:44,218 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 05:21:44,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-20 05:21:44,219 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-20 05:21:44,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:44,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:44,219 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-20 05:21:44,220 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:44,220 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, 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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~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; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2019-11-20 05:21:44,220 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-11-20 05:21:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-20 05:21:44,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:44,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977553092] [2019-11-20 05:21:44,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:44,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977553092] [2019-11-20 05:21:44,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:21:44,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:21:44,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650921742] [2019-11-20 05:21:44,270 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:21:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:44,271 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-20 05:21:44,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:44,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831220003] [2019-11-20 05:21:44,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,285 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:44,319 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:44,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:44,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:44,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:44,320 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:44,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:44,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:44,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:44,320 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2019-11-20 05:21:44,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:44,321 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:44,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:44,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:44,431 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:44,431 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:44,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:44,444 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 [2019-11-20 05:21:44,451 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:21:44,452 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:44,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:44,466 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:44,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:44,486 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 [2019-11-20 05:21:44,495 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:44,498 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:44,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:44,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:44,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:44,499 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:44,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:44,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:44,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:44,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2019-11-20 05:21:44,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:44,500 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:44,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:44,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:44,634 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:44,634 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:44,649 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 [2019-11-20 05:21:44,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:44,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:44,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:44,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:44,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:44,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:44,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:21:44,661 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:44,681 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 [2019-11-20 05:21:44,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:44,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:44,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:44,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:44,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:44,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:44,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:44,692 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:44,699 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:44,699 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:44,708 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:44,708 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:44,708 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:44,708 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-20 05:21:44,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:21:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:44,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:44,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:44,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:44,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:44,752 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 [2019-11-20 05:21:44,752 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-20 05:21:44,773 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2019-11-20 05:21:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:21:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-20 05:21:44,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:21:44,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:44,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:21:44,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:44,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-20 05:21:44,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:44,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-20 05:21:44,777 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-20 05:21:44,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-20 05:21:44,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-20 05:21:44,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-20 05:21:44,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-20 05:21:44,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:44,779 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-20 05:21:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-20 05:21:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-20 05:21:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 05:21:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-20 05:21:44,782 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-20 05:21:44,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:21:44,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:21:44,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:21:44,783 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-20 05:21:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:21:44,841 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-20 05:21:44,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:21:44,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-20 05:21:44,842 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-20 05:21:44,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-20 05:21:44,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-20 05:21:44,843 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-20 05:21:44,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-20 05:21:44,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:21:44,844 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-20 05:21:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-20 05:21:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-20 05:21:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 05:21:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-20 05:21:44,847 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-20 05:21:44,847 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-20 05:21:44,847 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 05:21:44,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-20 05:21:44,848 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-20 05:21:44,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:44,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:44,849 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-20 05:21:44,849 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:44,849 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-20 05:21:44,849 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-11-20 05:21:44,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-20 05:21:44,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:44,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058507637] [2019-11-20 05:21:44,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,871 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:44,871 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-20 05:21:44,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:44,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540913777] [2019-11-20 05:21:44,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,880 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:44,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-20 05:21:44,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:44,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332376838] [2019-11-20 05:21:44,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:44,917 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:44,956 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:44,956 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:44,957 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:44,957 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:44,957 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:44,957 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:44,957 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:44,957 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:44,957 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2019-11-20 05:21:44,958 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:44,958 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:44,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:44,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:45,052 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:45,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:45,069 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 [2019-11-20 05:21:45,076 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:21:45,076 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:45,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:45,092 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:45,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:45,111 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 [2019-11-20 05:21:45,119 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:45,121 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:45,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:45,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:45,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:45,122 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:45,122 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,122 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:45,122 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:45,122 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2019-11-20 05:21:45,122 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:45,123 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:45,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,243 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:45,243 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:45,260 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 [2019-11-20 05:21:45,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:45,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:45,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:45,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:45,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:45,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:21:45,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,272 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 [2019-11-20 05:21:45,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:45,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:45,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:45,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:45,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:45,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:45,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:21:45,291 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:45,294 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:45,294 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:45,297 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:45,297 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:21:45,297 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:45,297 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-20 05:21:45,299 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:21:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:45,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:45,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:45,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:45,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:45,366 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 [2019-11-20 05:21:45,366 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-20 05:21:45,379 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2019-11-20 05:21:45,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:21:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-20 05:21:45,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:21:45,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:45,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:21:45,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:45,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-20 05:21:45,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:45,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-20 05:21:45,386 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-20 05:21:45,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-20 05:21:45,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-20 05:21:45,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-20 05:21:45,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-20 05:21:45,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:45,387 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-20 05:21:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-20 05:21:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-20 05:21:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-20 05:21:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-20 05:21:45,395 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-20 05:21:45,396 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-20 05:21:45,396 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 05:21:45,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-20 05:21:45,396 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-20 05:21:45,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:45,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:45,397 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:21:45,397 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:45,397 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, 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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~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; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2019-11-20 05:21:45,397 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2019-11-20 05:21:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-20 05:21:45,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:45,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519166031] [2019-11-20 05:21:45,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:45,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519166031] [2019-11-20 05:21:45,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:21:45,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:21:45,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917223369] [2019-11-20 05:21:45,454 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:21:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:45,455 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-20 05:21:45,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:45,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974243858] [2019-11-20 05:21:45,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:45,474 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:45,512 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:45,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:45,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:45,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:45,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:45,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:45,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:45,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2019-11-20 05:21:45,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:45,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:45,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,615 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:45,616 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:45,628 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:45,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:45,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:21:45,644 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:45,646 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:45,646 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:45,646 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:45,646 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:45,646 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:45,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:45,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:45,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2019-11-20 05:21:45,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:45,646 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:45,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,731 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:45,731 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:45,752 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 [2019-11-20 05:21:45,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:45,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:45,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:45,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:45,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:45,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:45,755 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 [2019-11-20 05:21:45,757 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:45,762 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:45,762 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:45,770 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:45,770 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:21:45,771 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:45,771 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-20 05:21:45,782 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:45,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:45,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:45,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:45,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:45,826 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 [2019-11-20 05:21:45,826 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-20 05:21:45,845 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2019-11-20 05:21:45,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:21:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-20 05:21:45,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:21:45,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:45,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 05:21:45,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:45,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-20 05:21:45,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:45,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-20 05:21:45,848 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-20 05:21:45,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-20 05:21:45,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-20 05:21:45,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-20 05:21:45,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-20 05:21:45,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:45,850 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-20 05:21:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-20 05:21:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-20 05:21:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 05:21:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-20 05:21:45,852 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-20 05:21:45,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:21:45,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:21:45,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:21:45,852 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-20 05:21:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:21:45,903 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-20 05:21:45,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:21:45,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-20 05:21:45,904 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-20 05:21:45,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-20 05:21:45,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-20 05:21:45,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-20 05:21:45,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-20 05:21:45,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:45,905 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-20 05:21:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-20 05:21:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-20 05:21:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 05:21:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-20 05:21:45,907 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-20 05:21:45,907 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-20 05:21:45,908 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 05:21:45,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-20 05:21:45,908 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-20 05:21:45,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:45,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:45,909 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:21:45,909 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:45,909 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, 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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~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; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-20 05:21:45,909 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-11-20 05:21:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-20 05:21:45,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:45,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237657225] [2019-11-20 05:21:45,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:45,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237657225] [2019-11-20 05:21:45,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:21:45,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:21:45,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138591755] [2019-11-20 05:21:45,960 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:21:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-20 05:21:45,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:45,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005376852] [2019-11-20 05:21:45,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:45,966 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:45,986 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:45,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:45,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:45,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:45,987 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:45,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:45,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:45,987 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:45,987 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2019-11-20 05:21:45,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:45,988 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:45,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:45,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,066 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:46,066 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:46,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:46,070 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 [2019-11-20 05:21:46,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:21:46,077 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:46,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:46,084 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:46,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:46,096 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,104 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:46,105 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:46,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:46,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:46,106 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:46,106 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:46,106 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:46,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:46,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2019-11-20 05:21:46,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:46,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:46,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:46,164 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:46,169 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 [2019-11-20 05:21:46,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:46,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:46,171 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:46,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:46,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:46,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:46,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:21:46,174 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:46,179 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 [2019-11-20 05:21:46,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:46,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:46,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:46,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:46,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:46,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:46,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:21:46,187 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:46,189 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:46,190 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:46,194 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:46,194 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:21:46,194 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:46,194 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,199 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:21:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:46,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:46,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:46,250 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 [2019-11-20 05:21:46,250 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-20 05:21:46,265 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2019-11-20 05:21:46,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:21:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-20 05:21:46,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 05:21:46,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:46,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-20 05:21:46,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:46,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-20 05:21:46,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:46,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-20 05:21:46,267 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-20 05:21:46,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-20 05:21:46,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-20 05:21:46,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-20 05:21:46,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-20 05:21:46,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:46,269 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-20 05:21:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-20 05:21:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-20 05:21:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 05:21:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-20 05:21:46,272 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-20 05:21:46,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:21:46,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:21:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:21:46,273 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-20 05:21:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:21:46,333 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-20 05:21:46,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:21:46,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-20 05:21:46,335 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 05:21:46,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-20 05:21:46,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-20 05:21:46,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-20 05:21:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-20 05:21:46,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:46,336 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-20 05:21:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-20 05:21:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-20 05:21:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 05:21:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-20 05:21:46,338 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-20 05:21:46,338 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-20 05:21:46,338 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 05:21:46,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-20 05:21:46,339 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 05:21:46,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:46,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:46,340 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:21:46,340 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:46,341 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, 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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~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; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2019-11-20 05:21:46,341 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2019-11-20 05:21:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:46,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-20 05:21:46,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:46,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853179468] [2019-11-20 05:21:46,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:46,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853179468] [2019-11-20 05:21:46,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:21:46,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:21:46,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618395854] [2019-11-20 05:21:46,399 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:21:46,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:46,399 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-20 05:21:46,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:46,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602462720] [2019-11-20 05:21:46,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:46,408 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:46,432 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:46,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:46,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:46,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:46,432 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:46,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,433 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:46,433 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:46,433 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2019-11-20 05:21:46,433 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:46,433 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:46,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:46,538 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:21:46,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:46,543 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:46,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:46,552 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,559 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:46,561 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:46,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:46,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:46,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:46,562 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:46,562 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,562 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:46,562 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:46,562 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2019-11-20 05:21:46,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:46,562 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:46,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,651 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:46,651 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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 [2019-11-20 05:21:46,655 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 [2019-11-20 05:21:46,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:46,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:46,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:46,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:46,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:46,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:46,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:21:46,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:46,661 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:46,661 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:46,664 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:21:46,665 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:46,665 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-20 05:21:46,666 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:21:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:46,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:46,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:46,712 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 [2019-11-20 05:21:46,713 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-20 05:21:46,723 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2019-11-20 05:21:46,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:21:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-20 05:21:46,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-20 05:21:46,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:46,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-20 05:21:46,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:46,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-20 05:21:46,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:46,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-20 05:21:46,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:21:46,726 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-20 05:21:46,726 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-20 05:21:46,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-20 05:21:46,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-20 05:21:46,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:46,727 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-20 05:21:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-20 05:21:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-20 05:21:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 05:21:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-20 05:21:46,729 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-20 05:21:46,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:21:46,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:21:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:21:46,730 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-20 05:21:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:21:46,801 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-20 05:21:46,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:21:46,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-20 05:21:46,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:21:46,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-20 05:21:46,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-20 05:21:46,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-20 05:21:46,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-20 05:21:46,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:21:46,803 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-20 05:21:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-20 05:21:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-20 05:21:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-20 05:21:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-20 05:21:46,805 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-20 05:21:46,805 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-20 05:21:46,805 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 05:21:46,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-20 05:21:46,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:21:46,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:21:46,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:21:46,806 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:21:46,806 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:21:46,806 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, 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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~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; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-20 05:21:46,806 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2019-11-20 05:21:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:46,806 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-20 05:21:46,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:46,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696543976] [2019-11-20 05:21:46,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:46,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696543976] [2019-11-20 05:21:46,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553018353] [2019-11-20 05:21:46,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:21:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:46,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:46,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:46,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:21:46,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-20 05:21:46,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587925380] [2019-11-20 05:21:46,895 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:21:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:46,895 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-20 05:21:46,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:21:46,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481076222] [2019-11-20 05:21:46,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:21:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:21:46,909 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:21:46,929 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:46,929 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:46,929 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:46,929 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:46,929 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:21:46,929 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:46,929 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:46,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:46,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2019-11-20 05:21:46,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:46,930 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:46,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:46,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:47,009 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:47,009 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:21:47,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:47,016 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:47,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:21:47,023 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:47,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:21:47,029 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:47,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:21:47,070 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 [2019-11-20 05:21:47,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:21:47,089 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:21:47,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:21:47,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:21:47,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:21:47,089 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:21:47,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:47,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:21:47,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:21:47,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2019-11-20 05:21:47,090 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:21:47,090 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:21:47,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:47,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:21:47,184 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:21:47,184 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:47,196 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 [2019-11-20 05:21:47,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:47,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:47,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:47,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:47,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:47,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:47,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:47,204 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:47,212 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 [2019-11-20 05:21:47,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:21:47,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:21:47,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:21:47,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:21:47,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:21:47,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:21:47,216 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 [2019-11-20 05:21:47,219 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:21:47,222 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:21:47,222 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_9d6aeb18-59f5-45e1-bd01-02590a4db8f7/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) [2019-11-20 05:21:47,229 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:21:47,229 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:21:47,230 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:21:47,230 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-20 05:21:47,232 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:21:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:21:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:47,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:21:47,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:21:47,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:21:47,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:21:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:21:47,289 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 [2019-11-20 05:21:47,289 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-20 05:21:47,296 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2019-11-20 05:21:47,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 05:21:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:21:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-20 05:21:47,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-20 05:21:47,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:47,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-20 05:21:47,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:47,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-20 05:21:47,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:21:47,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-20 05:21:47,299 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 05:21:47,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-20 05:21:47,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 05:21:47,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 05:21:47,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 05:21:47,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:21:47,299 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:21:47,299 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:21:47,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:21:47,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:21:47,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:21:47,300 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-20 05:21:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:21:47,300 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 05:21:47,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:21:47,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 05:21:47,300 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 05:21:47,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:21:47,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 05:21:47,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 05:21:47,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 05:21:47,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:21:47,301 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:21:47,301 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:21:47,301 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:21:47,301 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 05:21:47,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:21:47,301 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 05:21:47,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 05:21:47,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 05:21:47 BoogieIcfgContainer [2019-11-20 05:21:47,308 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 05:21:47,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:21:47,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:21:47,308 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:21:47,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:21:43" (3/4) ... [2019-11-20 05:21:47,311 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 05:21:47,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:21:47,313 INFO L168 Benchmark]: Toolchain (without parser) took 5213.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:21:47,313 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:21:47,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:21:47,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:21:47,324 INFO L168 Benchmark]: Boogie Preprocessor took 56.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:21:47,325 INFO L168 Benchmark]: RCFGBuilder took 537.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:21:47,327 INFO L168 Benchmark]: BuchiAutomizer took 4138.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 45.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:21:47,328 INFO L168 Benchmark]: Witness Printer took 3.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:21:47,333 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 432.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 537.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4138.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 45.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -47.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...