./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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-cad4683 [2019-10-22 09:02:13,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:13,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:13,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:13,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:13,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:13,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:13,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:13,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:13,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:13,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:13,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:13,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:13,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:13,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:13,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:13,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:13,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:13,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:13,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:13,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:13,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:13,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:13,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:13,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:13,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:13,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:13,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:13,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:13,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:13,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:13,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:13,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:13,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:13,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:13,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:13,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:13,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:13,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:13,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:13,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:13,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 09:02:13,223 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:13,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:13,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:13,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:13,225 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:13,225 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:02:13,225 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:02:13,225 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:02:13,225 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:02:13,225 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:02:13,226 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:02:13,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:13,226 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:13,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:13,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:13,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:13,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:13,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:02:13,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:02:13,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:02:13,227 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:13,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:13,228 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:02:13,228 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:13,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:02:13,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:13,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:13,229 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:02:13,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:13,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:13,229 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:02:13,230 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:02:13,230 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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 [2019-10-22 09:02:13,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:13,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:13,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:13,268 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:13,268 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:13,269 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2019-10-22 09:02:13,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/data/4ada03ff3/9907ed9daf9b41b6b5418bc817c08e5e/FLAGc339f47fa [2019-10-22 09:02:13,720 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:13,721 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2019-10-22 09:02:13,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/data/4ada03ff3/9907ed9daf9b41b6b5418bc817c08e5e/FLAGc339f47fa [2019-10-22 09:02:14,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/data/4ada03ff3/9907ed9daf9b41b6b5418bc817c08e5e [2019-10-22 09:02:14,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:14,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:14,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:14,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:14,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:14,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c437805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14, skipping insertion in model container [2019-10-22 09:02:14,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,148 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:14,172 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:14,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:14,467 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:14,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:14,536 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:14,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14 WrapperNode [2019-10-22 09:02:14,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:14,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:14,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:14,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:14,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:14,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:14,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:14,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:14,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... [2019-10-22 09:02:14,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:14,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:14,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:14,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:14,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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 [2019-10-22 09:02:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:14,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:15,066 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:15,067 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-10-22 09:02:15,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:15 BoogieIcfgContainer [2019-10-22 09:02:15,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:15,068 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:02:15,068 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:02:15,072 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:02:15,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:15,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:02:14" (1/3) ... [2019-10-22 09:02:15,076 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e17f4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:15, skipping insertion in model container [2019-10-22 09:02:15,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:15,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:14" (2/3) ... [2019-10-22 09:02:15,076 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e17f4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:15, skipping insertion in model container [2019-10-22 09:02:15,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:15,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:15" (3/3) ... [2019-10-22 09:02:15,078 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2019-10-22 09:02:15,121 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:02:15,121 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:02:15,121 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:02:15,121 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:15,122 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:15,122 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:02:15,122 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:15,122 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:02:15,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-10-22 09:02:15,160 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-10-22 09:02:15,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:15,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:15,167 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 09:02:15,167 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:15,167 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:02:15,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-10-22 09:02:15,172 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-10-22 09:02:15,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:15,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:15,172 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 09:02:15,172 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:15,180 INFO L791 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-10-22 09:02:15,180 INFO L793 eck$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 [2019-10-22 09:02:15,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:15,187 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-10-22 09:02:15,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:15,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660052472] [2019-10-22 09:02:15,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:15,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:15,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:15,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660052472] [2019-10-22 09:02:15,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:15,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 09:02:15,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087892792] [2019-10-22 09:02:15,367 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:15,367 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-10-22 09:02:15,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:15,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433292117] [2019-10-22 09:02:15,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:15,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:15,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:15,400 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:15,447 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:15,447 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:15,448 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:15,448 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:15,448 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:15,448 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:15,448 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:15,448 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:15,449 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2019-10-22 09:02:15,449 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:15,449 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:15,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:15,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:15,579 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:15,579 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:15,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:15,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:15,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:15,603 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:15,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:15,613 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:15,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:15,626 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 [2019-10-22 09:02:15,634 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:15,637 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:15,637 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:15,637 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:15,637 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:15,637 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:15,637 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:15,637 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:15,638 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:15,638 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2019-10-22 09:02:15,638 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:15,638 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:15,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:15,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:15,737 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:15,741 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:15,743 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 [2019-10-22 09:02:15,747 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:15,748 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:15,749 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:15,749 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:15,749 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:15,752 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:15,753 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:15,765 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:15,766 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 [2019-10-22 09:02:15,768 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:15,770 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:15,770 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:15,770 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:15,770 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:15,771 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:15,771 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:15,780 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:15,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:15,797 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:15,800 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:15,800 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:15,800 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:15,801 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 09:02:15,805 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:15,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:15,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:15,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:15,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:15,862 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 [2019-10-22 09:02:15,863 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-10-22 09:02:15,929 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. [2019-10-22 09:02:15,930 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 [2019-10-22 09:02:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-10-22 09:02:15,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 09:02:15,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:15,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 09:02:15,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:15,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 09:02:15,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:15,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-10-22 09:02:15,944 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-10-22 09:02:15,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-10-22 09:02:15,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-10-22 09:02:15,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-10-22 09:02:15,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-10-22 09:02:15,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:15,953 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-10-22 09:02:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-10-22 09:02:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-10-22 09:02:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 09:02:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-10-22 09:02:15,978 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-10-22 09:02:15,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:15,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:15,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:15,982 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-10-22 09:02:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:16,035 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-10-22 09:02:16,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:16,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-10-22 09:02:16,037 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-10-22 09:02:16,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-10-22 09:02:16,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-10-22 09:02:16,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-10-22 09:02:16,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-10-22 09:02:16,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:16,039 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 09:02:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-10-22 09:02:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 09:02:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:02:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-10-22 09:02:16,041 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 09:02:16,041 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 09:02:16,041 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:02:16,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-10-22 09:02:16,042 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-10-22 09:02:16,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:16,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:16,043 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:16,043 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:16,043 INFO L791 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 [2019-10-22 09:02:16,043 INFO L793 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-10-22 09:02:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,044 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-10-22 09:02:16,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015851142] [2019-10-22 09:02:16,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:16,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015851142] [2019-10-22 09:02:16,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:16,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:16,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802007236] [2019-10-22 09:02:16,117 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,118 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-10-22 09:02:16,118 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310335693] [2019-10-22 09:02:16,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,136 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:16,156 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:16,156 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:16,156 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:16,156 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:16,156 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:16,156 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,156 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:16,156 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:16,157 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2019-10-22 09:02:16,157 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:16,157 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:16,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,233 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:16,233 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:16,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:16,240 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,251 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:16,251 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:16,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:16,259 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:16,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:16,271 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,280 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:16,283 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:16,283 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:16,283 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:16,283 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:16,283 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:16,283 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,283 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:16,283 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:16,283 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2019-10-22 09:02:16,284 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:16,284 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:16,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,376 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:16,376 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:16,376 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 [2019-10-22 09:02:16,377 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:16,378 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:16,378 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:16,378 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:16,378 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:16,380 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:16,380 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:16,396 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:16,397 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 [2019-10-22 09:02:16,398 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:16,399 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:16,399 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:16,400 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:16,400 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:16,400 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:16,401 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:16,405 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:16,411 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:16,411 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:16,412 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:16,412 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:16,412 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:16,412 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 09:02:16,413 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:16,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:16,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:16,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:16,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:16,449 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 [2019-10-22 09:02:16,449 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-10-22 09:02:16,468 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. [2019-10-22 09:02:16,470 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 [2019-10-22 09:02:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-10-22 09:02:16,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 09:02:16,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:16,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 09:02:16,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:16,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-10-22 09:02:16,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:16,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-10-22 09:02:16,473 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-10-22 09:02:16,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-10-22 09:02:16,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-10-22 09:02:16,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-10-22 09:02:16,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-10-22 09:02:16,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:16,474 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-10-22 09:02:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-10-22 09:02:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-10-22 09:02:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:02:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-10-22 09:02:16,481 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-10-22 09:02:16,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:16,481 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-10-22 09:02:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:16,543 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-22 09:02:16,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:16,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-10-22 09:02:16,545 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 09:02:16,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-10-22 09:02:16,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-10-22 09:02:16,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-10-22 09:02:16,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-10-22 09:02:16,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:16,546 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-10-22 09:02:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-10-22 09:02:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-10-22 09:02:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 09:02:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-10-22 09:02:16,548 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-10-22 09:02:16,548 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-10-22 09:02:16,548 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:02:16,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-10-22 09:02:16,548 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 09:02:16,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:16,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:16,549 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:16,549 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:16,549 INFO L791 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-10-22 09:02:16,549 INFO L793 eck$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 [2019-10-22 09:02:16,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,550 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-10-22 09:02:16,550 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,550 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610292673] [2019-10-22 09:02:16,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,583 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-10-22 09:02:16,588 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975831469] [2019-10-22 09:02:16,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,594 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-10-22 09:02:16,601 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270091588] [2019-10-22 09:02:16,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,629 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:16,659 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:16,659 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:16,659 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:16,660 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:16,660 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:16,660 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,660 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:16,660 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:16,660 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2019-10-22 09:02:16,660 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:16,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:16,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:16,736 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:16,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:16,756 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:16,756 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:16,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:16,764 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:16,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:16,777 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 [2019-10-22 09:02:16,786 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:16,788 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:16,788 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:16,788 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:16,788 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:16,789 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:16,789 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:16,789 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:16,789 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:16,789 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2019-10-22 09:02:16,789 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:16,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:16,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:16,854 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:16,855 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:16,855 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 [2019-10-22 09:02:16,856 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:16,856 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:16,856 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:16,856 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:16,856 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:16,857 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:16,857 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:16,859 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:16,860 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 [2019-10-22 09:02:16,860 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:16,861 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:16,861 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:16,861 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:16,861 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:16,862 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:16,862 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:16,864 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:16,867 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:16,867 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:16,867 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:16,867 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:16,868 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:16,868 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-10-22 09:02:16,868 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:16,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:16,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:16,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:16,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:16,916 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 [2019-10-22 09:02:16,916 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-10-22 09:02:16,927 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. [2019-10-22 09:02:16,927 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 [2019-10-22 09:02:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-10-22 09:02:16,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 09:02:16,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:16,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 09:02:16,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:16,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-10-22 09:02:16,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:16,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-10-22 09:02:16,930 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-10-22 09:02:16,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-10-22 09:02:16,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-10-22 09:02:16,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-10-22 09:02:16,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-10-22 09:02:16,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:16,931 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-10-22 09:02:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-10-22 09:02:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-10-22 09:02:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:02:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-10-22 09:02:16,933 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-10-22 09:02:16,933 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-10-22 09:02:16,933 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:02:16,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-10-22 09:02:16,934 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 09:02:16,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:16,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:16,934 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:16,934 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:16,935 INFO L791 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 [2019-10-22 09:02:16,935 INFO L793 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 [2019-10-22 09:02:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-10-22 09:02:16,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097925374] [2019-10-22 09:02:16,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:16,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097925374] [2019-10-22 09:02:16,964 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:16,964 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:16,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215676651] [2019-10-22 09:02:16,965 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:16,965 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-10-22 09:02:16,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:16,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382224765] [2019-10-22 09:02:16,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:16,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:16,973 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:17,001 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:17,002 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:17,002 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:17,002 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:17,002 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:17,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:17,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:17,002 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2019-10-22 09:02:17,002 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:17,002 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:17,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:17,081 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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 [2019-10-22 09:02:17,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:17,085 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) [2019-10-22 09:02:17,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:17,096 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,102 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:17,104 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:17,105 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:17,105 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:17,105 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:17,105 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:17,105 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,105 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:17,105 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:17,105 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2019-10-22 09:02:17,105 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:17,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:17,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,182 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:17,182 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:17,182 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 [2019-10-22 09:02:17,183 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:17,183 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:17,183 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:17,184 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:17,184 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:17,184 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:17,184 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:17,187 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:17,192 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:17,192 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:17,193 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:17,193 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:17,193 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:17,193 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 09:02:17,193 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:17,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:17,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:17,243 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 [2019-10-22 09:02:17,243 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-10-22 09:02:17,261 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. [2019-10-22 09:02:17,263 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 [2019-10-22 09:02:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-10-22 09:02:17,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 09:02:17,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-10-22 09:02:17,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-10-22 09:02:17,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-10-22 09:02:17,265 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 09:02:17,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-10-22 09:02:17,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-10-22 09:02:17,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-10-22 09:02:17,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-10-22 09:02:17,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:17,266 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-10-22 09:02:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-10-22 09:02:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-10-22 09:02:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:02:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-10-22 09:02:17,269 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-10-22 09:02:17,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:17,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:17,269 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-10-22 09:02:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:17,311 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-10-22 09:02:17,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:17,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-10-22 09:02:17,313 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-10-22 09:02:17,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-10-22 09:02:17,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-10-22 09:02:17,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-10-22 09:02:17,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-10-22 09:02:17,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:17,314 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-10-22 09:02:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-10-22 09:02:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-10-22 09:02:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:02:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-10-22 09:02:17,316 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-10-22 09:02:17,316 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-10-22 09:02:17,316 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:02:17,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-10-22 09:02:17,317 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-10-22 09:02:17,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:17,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:17,318 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:17,318 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:17,318 INFO L791 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 [2019-10-22 09:02:17,318 INFO L793 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-10-22 09:02:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,319 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-10-22 09:02:17,319 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:17,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015898508] [2019-10-22 09:02:17,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:17,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015898508] [2019-10-22 09:02:17,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:17,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:17,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987103512] [2019-10-22 09:02:17,356 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,356 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-10-22 09:02:17,356 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:17,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038999099] [2019-10-22 09:02:17,357 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:17,388 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:17,406 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:17,406 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:17,406 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:17,406 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:17,406 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:17,406 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,406 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:17,406 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:17,407 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2019-10-22 09:02:17,407 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:17,407 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:17,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,475 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:17,475 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:17,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:17,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:17,487 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:17,491 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:17,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:17,504 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:17,505 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:17,505 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:17,506 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:17,506 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:17,506 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:17,506 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,506 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:17,506 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:17,506 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2019-10-22 09:02:17,506 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:17,506 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:17,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,561 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:17,561 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:17,561 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 [2019-10-22 09:02:17,562 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:17,562 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:17,562 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:17,562 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:17,563 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:17,563 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:17,563 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:17,565 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:17,565 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 [2019-10-22 09:02:17,566 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:17,566 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:17,566 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:17,566 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:17,566 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:17,567 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:17,567 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:17,569 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:17,571 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:17,571 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:17,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:17,572 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:17,572 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:17,572 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-10-22 09:02:17,572 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:17,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:17,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:17,613 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 [2019-10-22 09:02:17,613 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-10-22 09:02:17,623 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. [2019-10-22 09:02:17,624 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 [2019-10-22 09:02:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-10-22 09:02:17,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-10-22 09:02:17,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-10-22 09:02:17,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-10-22 09:02:17,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-10-22 09:02:17,626 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 09:02:17,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-10-22 09:02:17,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-10-22 09:02:17,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-10-22 09:02:17,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-10-22 09:02:17,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:17,627 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-10-22 09:02:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-10-22 09:02:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-10-22 09:02:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:02:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-10-22 09:02:17,629 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-10-22 09:02:17,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:17,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:17,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:17,629 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-10-22 09:02:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:17,691 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-22 09:02:17,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:17,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-10-22 09:02:17,692 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 09:02:17,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-10-22 09:02:17,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-10-22 09:02:17,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-10-22 09:02:17,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-10-22 09:02:17,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:17,693 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-10-22 09:02:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-10-22 09:02:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-10-22 09:02:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:02:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-10-22 09:02:17,698 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-22 09:02:17,699 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-22 09:02:17,699 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 09:02:17,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-10-22 09:02:17,699 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 09:02:17,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:17,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:17,700 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:17,700 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:17,700 INFO L791 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 [2019-10-22 09:02:17,700 INFO L793 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 [2019-10-22 09:02:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-10-22 09:02:17,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:17,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92390608] [2019-10-22 09:02:17,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:17,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92390608] [2019-10-22 09:02:17,742 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:17,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:17,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416319326] [2019-10-22 09:02:17,742 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-10-22 09:02:17,742 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:17,743 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630191719] [2019-10-22 09:02:17,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:17,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:17,750 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:17,767 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:17,768 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:17,768 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:17,768 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:17,768 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:17,768 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,768 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:17,768 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:17,768 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2019-10-22 09:02:17,768 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:17,768 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:17,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,836 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:17,837 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:17,848 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:17,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:17,863 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:17,865 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:17,865 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:17,866 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:17,866 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:17,866 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:17,866 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:17,866 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:17,866 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:17,866 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2019-10-22 09:02:17,866 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:17,866 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:17,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:17,932 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:17,932 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:17,933 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 [2019-10-22 09:02:17,933 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:17,933 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:17,934 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:17,934 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:17,934 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:17,934 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:17,934 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:17,936 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:17,938 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:17,938 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:17,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:17,939 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:17,939 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:17,939 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 09:02:17,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:17,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:17,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:17,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:17,971 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 [2019-10-22 09:02:17,971 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-10-22 09:02:17,977 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. [2019-10-22 09:02:17,977 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 [2019-10-22 09:02:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-10-22 09:02:17,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-10-22 09:02:17,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-10-22 09:02:17,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-10-22 09:02:17,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:17,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-10-22 09:02:17,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:17,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-10-22 09:02:17,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-10-22 09:02:17,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-10-22 09:02:17,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-10-22 09:02:17,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:17,980 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-22 09:02:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-10-22 09:02:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 09:02:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:02:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-10-22 09:02:17,982 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-22 09:02:17,982 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:17,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:17,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:17,983 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-10-22 09:02:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:18,036 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-10-22 09:02:18,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:18,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-10-22 09:02:18,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:18,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-10-22 09:02:18,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-10-22 09:02:18,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-10-22 09:02:18,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-10-22 09:02:18,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:18,038 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-10-22 09:02:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-10-22 09:02:18,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-22 09:02:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 09:02:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-10-22 09:02:18,040 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-10-22 09:02:18,040 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-10-22 09:02:18,040 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-10-22 09:02:18,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-10-22 09:02:18,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:18,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:18,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:18,041 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:18,041 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:18,041 INFO L791 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 [2019-10-22 09:02:18,041 INFO L793 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 [2019-10-22 09:02:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-10-22 09:02:18,041 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:18,042 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292488785] [2019-10-22 09:02:18,042 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:18,042 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:18,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:18,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292488785] [2019-10-22 09:02:18,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403574290] [2019-10-22 09:02:18,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:18,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:18,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:18,137 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:18,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-10-22 09:02:18,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253017619] [2019-10-22 09:02:18,137 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-10-22 09:02:18,137 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:18,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425024181] [2019-10-22 09:02:18,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:18,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:18,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:18,143 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:18,173 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:18,173 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:18,173 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:18,173 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:18,173 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:18,173 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:18,173 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:18,173 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:18,173 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2019-10-22 09:02:18,173 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:18,173 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:18,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:18,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:18,225 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:18,225 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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 [2019-10-22 09:02:18,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:18,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:18,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:18,233 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/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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 [2019-10-22 09:02:18,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:18,239 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_96936fa5-99b9-4146-9e66-e462644086b0/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 [2019-10-22 09:02:18,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:18,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:18,263 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:18,266 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:18,267 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:18,267 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:18,267 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:18,267 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:18,267 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:18,267 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:18,267 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:18,267 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2019-10-22 09:02:18,267 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:18,267 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:18,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:18,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:18,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:18,324 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:18,324 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 [2019-10-22 09:02:18,325 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:18,325 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:18,325 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:18,325 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:18,325 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:18,326 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:18,326 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:18,327 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:18,328 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 [2019-10-22 09:02:18,328 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:18,328 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:18,329 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:18,329 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:18,329 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:18,329 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:18,329 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:18,340 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:18,341 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:18,342 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:18,342 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:18,342 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:18,344 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:18,344 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-10-22 09:02:18,345 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:18,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:18,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:18,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:18,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:18,392 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 [2019-10-22 09:02:18,392 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-10-22 09:02:18,397 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. [2019-10-22 09:02:18,397 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 [2019-10-22 09:02:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-10-22 09:02:18,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-10-22 09:02:18,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:18,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-10-22 09:02:18,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:18,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-10-22 09:02:18,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:18,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-10-22 09:02:18,399 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:18,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-10-22 09:02:18,400 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:02:18,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:02:18,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:02:18,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:18,400 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:18,400 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:18,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:18,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:18,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:18,400 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 09:02:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:18,401 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 09:02:18,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:02:18,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 09:02:18,401 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:18,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:02:18,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:02:18,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:02:18,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:02:18,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:18,402 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:18,402 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:18,402 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:18,402 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-10-22 09:02:18,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:18,402 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:18,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:02:18,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:02:18 BoogieIcfgContainer [2019-10-22 09:02:18,409 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:02:18,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:18,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:18,409 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:18,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:15" (3/4) ... [2019-10-22 09:02:18,413 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:18,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:18,415 INFO L168 Benchmark]: Toolchain (without parser) took 4283.17 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 239.6 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -74.5 MB). Peak memory consumption was 165.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:18,416 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:18,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:18,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.52 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. [2019-10-22 09:02:18,417 INFO L168 Benchmark]: Boogie Preprocessor took 28.35 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:18,417 INFO L168 Benchmark]: RCFGBuilder took 461.96 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:18,418 INFO L168 Benchmark]: BuchiAutomizer took 3340.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.2 MB). Peak memory consumption was 174.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:18,418 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:18,421 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 403.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.52 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. * Boogie Preprocessor took 28.35 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 461.96 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3340.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.2 MB). Peak memory consumption was 174.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.31 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 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 3.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. 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: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...