./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 7e1b4e42babcfba0789bfa7cb90840c832d315a4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:00:08,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:08,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:08,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:08,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:08,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:08,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:08,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:08,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:08,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:08,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:08,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:08,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:08,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:08,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:08,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:08,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:08,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:08,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:08,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:08,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:08,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:08,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:08,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:08,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:08,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:08,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:08,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:08,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:08,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:08,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:08,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:08,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:08,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:08,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:08,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:08,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:08,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:08,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:08,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:08,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:08,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 09:00:08,718 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:08,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:08,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:08,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:08,719 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:08,719 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:00:08,720 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:00:08,720 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:00:08,720 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:00:08,720 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:00:08,720 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:00:08,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:08,721 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:08,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:08,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:08,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:08,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:08,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:00:08,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:00:08,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:00:08,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:08,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:08,722 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:00:08,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:08,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:00:08,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:08,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:08,724 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:00:08,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:08,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:08,724 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:00:08,725 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:00:08,725 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 -> 7e1b4e42babcfba0789bfa7cb90840c832d315a4 [2019-10-22 09:00:08,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:08,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:08,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:08,762 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:08,762 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:08,763 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-10-22 09:00:08,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/data/40bed7342/4171b8a1b60c4d729d353f98d89437f1/FLAG80e855d18 [2019-10-22 09:00:09,201 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:09,203 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-10-22 09:00:09,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/data/40bed7342/4171b8a1b60c4d729d353f98d89437f1/FLAG80e855d18 [2019-10-22 09:00:09,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/data/40bed7342/4171b8a1b60c4d729d353f98d89437f1 [2019-10-22 09:00:09,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:09,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:09,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:09,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:09,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:09,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ff221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09, skipping insertion in model container [2019-10-22 09:00:09,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,242 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:09,265 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:09,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:09,492 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:09,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:09,540 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:09,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09 WrapperNode [2019-10-22 09:00:09,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:09,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:09,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:09,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:09,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:09,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:09,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:09,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:09,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... [2019-10-22 09:00:09,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:09,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:09,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:09,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:09,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:09,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:10,262 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:10,263 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-10-22 09:00:10,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:10 BoogieIcfgContainer [2019-10-22 09:00:10,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:10,264 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:00:10,265 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:00:10,268 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:00:10,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:10,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:00:09" (1/3) ... [2019-10-22 09:00:10,270 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48923131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:10, skipping insertion in model container [2019-10-22 09:00:10,271 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:10,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:09" (2/3) ... [2019-10-22 09:00:10,271 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48923131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:10, skipping insertion in model container [2019-10-22 09:00:10,271 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:10,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:10" (3/3) ... [2019-10-22 09:00:10,273 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-10-22 09:00:10,308 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:00:10,309 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:00:10,309 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:00:10,309 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:10,309 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:10,309 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:00:10,310 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:10,310 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:00:10,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-10-22 09:00:10,348 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-10-22 09:00:10,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:10,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:10,354 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 09:00:10,354 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:10,354 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:00:10,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2019-10-22 09:00:10,358 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-10-22 09:00:10,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:10,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:10,359 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 09:00:10,359 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:10,364 INFO L791 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2019-10-22 09:00:10,365 INFO L793 eck$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 09:00:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-10-22 09:00:10,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:10,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822429067] [2019-10-22 09:00:10,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:10,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:10,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:10,504 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 09:00:10,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822429067] [2019-10-22 09:00:10,505 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:10,505 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 09:00:10,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896628587] [2019-10-22 09:00:10,508 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-10-22 09:00:10,509 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:10,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732889062] [2019-10-22 09:00:10,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:10,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:10,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:10,542 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:10,579 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:10,579 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:10,579 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:10,580 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:10,580 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:10,580 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:10,580 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:10,580 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:10,580 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-10-22 09:00:10,580 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:10,581 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:10,599 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 09:00:10,611 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 09:00:10,721 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:10,722 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:10,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:10,730 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:10,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:10,746 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:10,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:10,756 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:10,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:10,767 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 09:00:10,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:10,776 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:10,776 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:10,776 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:10,776 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:10,776 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:10,776 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:10,776 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:10,777 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:10,777 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2019-10-22 09:00:10,777 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:10,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:10,778 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 09:00:10,786 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 09:00:10,865 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:10,870 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:10,872 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 09:00:10,874 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:10,874 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:10,875 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:10,875 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:10,876 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:10,878 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:10,879 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:10,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:10,896 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 09:00:10,898 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:10,898 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:10,899 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:10,899 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:10,899 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:10,900 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:10,900 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:10,905 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:10,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:10,916 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:10,918 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:10,919 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:10,919 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:10,920 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 09:00:10,923 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:10,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:10,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:10,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:10,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:10,970 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 09:00:10,981 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 09:00:10,982 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2019-10-22 09:00:11,041 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 09:00:11,042 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 09:00:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2019-10-22 09:00:11,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 09:00:11,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:11,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 09:00:11,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:11,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 09:00:11,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:11,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2019-10-22 09:00:11,057 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-10-22 09:00:11,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2019-10-22 09:00:11,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-10-22 09:00:11,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-10-22 09:00:11,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-10-22 09:00:11,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:11,065 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-10-22 09:00:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-10-22 09:00:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-10-22 09:00:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 09:00:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-10-22 09:00:11,095 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-10-22 09:00:11,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:11,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:11,100 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-10-22 09:00:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:11,150 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-10-22 09:00:11,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:11,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-10-22 09:00:11,152 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-10-22 09:00:11,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-10-22 09:00:11,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-10-22 09:00:11,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-10-22 09:00:11,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-10-22 09:00:11,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:11,154 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 09:00:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-10-22 09:00:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 09:00:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:00:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-10-22 09:00:11,156 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 09:00:11,157 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 09:00:11,157 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:00:11,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-10-22 09:00:11,157 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-10-22 09:00:11,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:11,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:11,158 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:00:11,158 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:11,158 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_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 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 09:00:11,159 INFO L793 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2019-10-22 09:00:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,159 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-10-22 09:00:11,160 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:11,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287069045] [2019-10-22 09:00:11,160 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,160 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:11,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287069045] [2019-10-22 09:00:11,214 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:11,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:11,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635396316] [2019-10-22 09:00:11,215 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-10-22 09:00:11,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:11,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562939207] [2019-10-22 09:00:11,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,240 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:11,280 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:11,281 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:11,281 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:11,281 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:11,281 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:11,281 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:11,281 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:11,281 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:11,281 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-10-22 09:00:11,281 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:11,281 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:11,282 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 09:00:11,289 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 09:00:11,356 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:11,357 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:11,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:11,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:11,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:11,374 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:11,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:11,382 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:11,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:11,398 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 09:00:11,410 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:11,413 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:11,413 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:11,413 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:11,413 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:11,413 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:11,414 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:11,414 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:11,414 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:11,414 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2019-10-22 09:00:11,414 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:11,414 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:11,415 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 09:00:11,426 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 09:00:11,514 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:11,514 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:11,515 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 09:00:11,516 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:11,516 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:11,516 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:11,517 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:11,517 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:11,519 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:11,519 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:11,536 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:11,539 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 09:00:11,540 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:11,540 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:11,540 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:11,541 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:11,541 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:11,541 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:11,541 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:11,549 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:11,552 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:11,553 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:11,553 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:11,553 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:11,553 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:11,553 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 09:00:11,554 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:11,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:11,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:11,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:11,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:11,588 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 09:00:11,589 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 09:00:11,589 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-10-22 09:00:11,607 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 09:00:11,610 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 09:00:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-10-22 09:00:11,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 09:00:11,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:11,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 09:00:11,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:11,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-10-22 09:00:11,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:11,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-10-22 09:00:11,612 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-10-22 09:00:11,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-10-22 09:00:11,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-10-22 09:00:11,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-10-22 09:00:11,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-10-22 09:00:11,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:11,614 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-10-22 09:00:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-10-22 09:00:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-10-22 09:00:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:00:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-10-22 09:00:11,620 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-10-22 09:00:11,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:11,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:11,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:11,621 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-10-22 09:00:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:11,685 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-22 09:00:11,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:11,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-10-22 09:00:11,686 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 09:00:11,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-10-22 09:00:11,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-10-22 09:00:11,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-10-22 09:00:11,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-10-22 09:00:11,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:11,688 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-10-22 09:00:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-10-22 09:00:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-10-22 09:00:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 09:00:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-10-22 09:00:11,690 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-10-22 09:00:11,690 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-10-22 09:00:11,690 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:00:11,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-10-22 09:00:11,690 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 09:00:11,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:11,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:11,691 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:00:11,694 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:11,695 INFO L791 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2019-10-22 09:00:11,695 INFO L793 eck$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 09:00:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-10-22 09:00:11,695 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:11,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162843525] [2019-10-22 09:00:11,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,696 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,717 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-10-22 09:00:11,720 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:11,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594368972] [2019-10-22 09:00:11,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,726 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-10-22 09:00:11,727 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:11,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679431546] [2019-10-22 09:00:11,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:11,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:11,744 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:11,762 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:11,762 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:11,762 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:11,762 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:11,762 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:11,762 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:11,763 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:11,763 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:11,763 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-10-22 09:00:11,763 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:11,763 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:11,764 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 09:00:11,770 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 09:00:11,822 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:11,823 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:11,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:11,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:11,836 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:11,837 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:11,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:11,845 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:11,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:11,857 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 09:00:11,864 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:11,866 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:11,866 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:11,866 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:11,866 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:11,867 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:11,867 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:11,867 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:11,867 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:11,867 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2019-10-22 09:00:11,867 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:11,867 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:11,868 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 09:00:11,876 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 09:00:11,939 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:11,940 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:11,940 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 09:00:11,941 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:11,941 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:11,941 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:11,941 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:11,941 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:11,942 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:11,942 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:11,949 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:11,953 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 09:00:11,953 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:11,953 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:11,954 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:11,954 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:11,954 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:11,954 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:11,955 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:11,960 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:11,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:11,971 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:11,974 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:11,974 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:11,974 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:11,974 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 09:00:11,975 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:11,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:11,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:12,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:12,030 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 09:00:12,031 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 09:00:12,031 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-10-22 09:00:12,044 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 09:00:12,047 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 09:00:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:00:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-10-22 09:00:12,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 09:00:12,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 09:00:12,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-10-22 09:00:12,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-10-22 09:00:12,064 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-10-22 09:00:12,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-10-22 09:00:12,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-10-22 09:00:12,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-10-22 09:00:12,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-10-22 09:00:12,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:12,065 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-10-22 09:00:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-10-22 09:00:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-10-22 09:00:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:00:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-10-22 09:00:12,073 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-10-22 09:00:12,073 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-10-22 09:00:12,073 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:00:12,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-10-22 09:00:12,073 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 09:00:12,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:12,074 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:12,074 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:12,074 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:12,074 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_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 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 09:00:12,074 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 09:00:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-10-22 09:00:12,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:12,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076365671] [2019-10-22 09:00:12,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,133 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 09:00:12,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076365671] [2019-10-22 09:00:12,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:12,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:00:12,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291096745] [2019-10-22 09:00:12,134 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,134 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-10-22 09:00:12,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:12,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348277117] [2019-10-22 09:00:12,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:12,155 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:12,173 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:12,174 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:12,174 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:12,174 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:12,174 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:12,174 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:12,174 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:12,174 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:12,174 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-10-22 09:00:12,174 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:12,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:12,175 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 09:00:12,181 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 09:00:12,247 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:12,247 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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) [2019-10-22 09:00:12,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:12,255 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:12,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:12,265 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 09:00:12,272 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:12,274 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:12,274 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:12,274 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:12,274 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:12,274 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:12,274 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:12,274 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:12,274 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:12,274 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2019-10-22 09:00:12,275 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:12,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:12,275 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 09:00:12,282 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 09:00:12,357 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:12,357 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:12,357 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 09:00:12,358 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:12,358 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:12,358 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:12,359 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:12,359 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:12,359 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:12,359 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:12,361 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:12,374 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:12,374 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:12,375 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:12,375 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:12,375 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:12,375 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 09:00:12,375 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:12,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:12,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:12,410 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 09:00:12,410 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 09:00:12,411 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-10-22 09:00:12,427 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 09:00:12,429 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 09:00:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-10-22 09:00:12,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 09:00:12,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-10-22 09:00:12,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-10-22 09:00:12,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-10-22 09:00:12,431 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 09:00:12,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-10-22 09:00:12,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-10-22 09:00:12,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-10-22 09:00:12,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-10-22 09:00:12,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:12,432 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-10-22 09:00:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-10-22 09:00:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-10-22 09:00:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:00:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-10-22 09:00:12,434 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-10-22 09:00:12,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:12,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:12,435 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-10-22 09:00:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:12,483 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-10-22 09:00:12,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:12,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-10-22 09:00:12,484 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-10-22 09:00:12,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-10-22 09:00:12,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-10-22 09:00:12,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-10-22 09:00:12,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-10-22 09:00:12,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:12,485 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-10-22 09:00:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-10-22 09:00:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-10-22 09:00:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:00:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-10-22 09:00:12,488 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-10-22 09:00:12,489 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-10-22 09:00:12,489 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:00:12,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-10-22 09:00:12,489 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-10-22 09:00:12,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:12,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:12,490 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:12,490 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:12,490 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_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 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 09:00:12,490 INFO L793 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2019-10-22 09:00:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-10-22 09:00:12,491 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:12,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526903388] [2019-10-22 09:00:12,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:12,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526903388] [2019-10-22 09:00:12,516 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:12,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:12,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791078092] [2019-10-22 09:00:12,516 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:12,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,516 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-10-22 09:00:12,517 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:12,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729148647] [2019-10-22 09:00:12,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:12,522 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:12,545 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:12,545 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:12,545 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:12,545 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:12,545 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:12,545 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:12,545 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:12,546 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:12,546 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-10-22 09:00:12,546 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:12,546 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:12,547 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 09:00:12,553 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 09:00:12,601 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:12,601 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:12,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:12,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:12,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:12,613 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:12,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:12,622 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:00:12,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:12,633 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:12,640 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:12,642 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:12,642 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:12,642 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:12,642 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:12,642 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:12,642 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:12,642 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:12,642 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:12,642 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2019-10-22 09:00:12,642 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:12,642 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:12,643 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 09:00:12,649 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 09:00:12,709 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:12,709 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:12,709 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 09:00:12,710 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:12,710 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:12,710 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:12,710 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:12,710 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:12,711 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:12,711 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:12,712 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:12,713 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 09:00:12,713 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:12,713 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:12,713 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:12,713 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:12,714 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:12,714 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:12,714 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:12,719 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:12,728 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:12,732 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:12,732 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:12,733 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:12,733 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:12,733 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 09:00:12,733 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:12,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:12,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:12,779 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 09:00:12,780 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 09:00:12,780 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-10-22 09:00:12,790 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 09:00:12,791 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 09:00:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:00:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-10-22 09:00:12,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-10-22 09:00:12,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-10-22 09:00:12,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-10-22 09:00:12,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:12,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-10-22 09:00:12,793 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 09:00:12,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-10-22 09:00:12,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-10-22 09:00:12,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-10-22 09:00:12,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-10-22 09:00:12,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:12,794 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-10-22 09:00:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-10-22 09:00:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-10-22 09:00:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:00:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-10-22 09:00:12,801 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-10-22 09:00:12,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:12,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:12,802 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-10-22 09:00:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:12,857 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-22 09:00:12,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:12,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-10-22 09:00:12,858 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 09:00:12,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-10-22 09:00:12,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-10-22 09:00:12,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-10-22 09:00:12,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-10-22 09:00:12,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:12,859 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-10-22 09:00:12,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-10-22 09:00:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-10-22 09:00:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:00:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-10-22 09:00:12,862 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-22 09:00:12,862 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-22 09:00:12,862 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 09:00:12,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-10-22 09:00:12,863 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 09:00:12,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:12,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:12,863 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 09:00:12,863 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:12,863 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_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 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 09:00:12,864 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 09:00:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-10-22 09:00:12,864 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:12,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170367071] [2019-10-22 09:00:12,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:12,905 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 09:00:12,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170367071] [2019-10-22 09:00:12,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:12,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:12,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304269429] [2019-10-22 09:00:12,906 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-10-22 09:00:12,906 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:12,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238585480] [2019-10-22 09:00:12,907 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,907 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:12,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:12,914 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:12,930 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:12,930 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:12,930 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:12,930 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:12,930 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:12,930 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:12,930 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:12,930 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:12,931 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-10-22 09:00:12,931 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:12,931 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:12,931 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 09:00:12,940 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 09:00:13,009 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:13,010 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:13,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:13,013 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:13,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:13,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:00:13,024 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:13,025 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:13,025 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:13,025 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:13,026 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:13,026 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:13,026 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:13,026 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:13,026 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:13,026 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2019-10-22 09:00:13,026 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:13,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:13,027 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 09:00:13,031 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 09:00:13,090 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:13,090 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:13,091 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 09:00:13,092 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:13,092 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:13,092 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:13,092 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:13,092 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:13,093 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:13,093 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:13,095 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:13,098 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:13,098 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:13,099 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:13,099 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:13,099 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:13,099 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 09:00:13,099 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:13,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:13,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:13,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:13,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:13,144 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 09:00:13,145 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 09:00:13,145 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-10-22 09:00:13,152 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 09:00:13,153 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 09:00:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:00:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-10-22 09:00:13,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-10-22 09:00:13,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:13,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-10-22 09:00:13,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:13,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-10-22 09:00:13,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:13,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-10-22 09:00:13,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:13,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-10-22 09:00:13,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-10-22 09:00:13,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-10-22 09:00:13,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-10-22 09:00:13,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:13,156 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-22 09:00:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-10-22 09:00:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 09:00:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:00:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-10-22 09:00:13,158 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-22 09:00:13,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:13,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:13,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:13,159 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-10-22 09:00:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:13,211 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-10-22 09:00:13,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:13,211 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-10-22 09:00:13,212 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:13,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-10-22 09:00:13,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-10-22 09:00:13,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-10-22 09:00:13,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-10-22 09:00:13,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:00:13,213 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-10-22 09:00:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-10-22 09:00:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-22 09:00:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 09:00:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-10-22 09:00:13,214 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-10-22 09:00:13,215 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-10-22 09:00:13,215 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-10-22 09:00:13,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-10-22 09:00:13,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:13,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:13,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:13,216 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 09:00:13,216 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:13,216 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_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~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_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 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 09:00:13,217 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 09:00:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:13,217 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-10-22 09:00:13,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:13,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034902363] [2019-10-22 09:00:13,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:13,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:13,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:13,252 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 09:00:13,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034902363] [2019-10-22 09:00:13,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792097014] [2019-10-22 09:00:13,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:13,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:13,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:13,293 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 09:00:13,293 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:13,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-10-22 09:00:13,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077399045] [2019-10-22 09:00:13,294 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:00:13,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:13,294 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-10-22 09:00:13,294 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:13,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392567454] [2019-10-22 09:00:13,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:13,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:13,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:13,300 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:13,319 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:13,320 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:13,320 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:13,320 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:13,320 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:13,320 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:13,320 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:13,320 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:13,320 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-10-22 09:00:13,320 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:13,320 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:13,321 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 09:00:13,328 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 09:00:13,386 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:13,386 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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) [2019-10-22 09:00:13,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:13,399 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:13,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:13,404 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_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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 09:00:13,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:13,412 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_605e6edd-4fdc-4ef0-a61b-9b9a235b3b3b/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) [2019-10-22 09:00:13,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:13,426 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:13,435 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:13,437 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:13,438 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:13,438 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:13,438 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:13,438 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:13,438 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:13,438 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:13,438 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:13,438 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2019-10-22 09:00:13,438 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:13,438 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:13,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:13,446 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 09:00:13,499 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:13,499 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:13,499 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 09:00:13,500 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:13,500 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:13,500 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:13,500 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:13,501 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:13,501 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:13,501 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:13,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:13,503 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 09:00:13,504 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:13,504 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:13,504 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:13,504 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:13,504 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:13,505 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:13,505 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:13,507 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:13,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:13,509 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:00:13,509 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:13,510 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:13,510 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:13,510 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 09:00:13,510 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:13,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:00:13,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:13,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:13,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:13,551 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 09:00:13,552 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 09:00:13,552 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-10-22 09:00:13,556 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 09:00:13,557 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 09:00:13,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:00:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-10-22 09:00:13,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-10-22 09:00:13,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:13,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-10-22 09:00:13,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:13,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-10-22 09:00:13,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:13,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-10-22 09:00:13,558 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:13,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-10-22 09:00:13,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:13,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:13,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:13,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:13,559 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:13,559 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:13,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:13,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:13,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:13,560 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 09:00:13,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:13,560 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 09:00:13,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:00:13,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 09:00:13,560 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:13,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:13,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:13,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:13,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:13,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:13,561 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:13,561 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:13,561 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:13,561 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-10-22 09:00:13,561 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:13,561 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:13,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:00:13,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:00:13 BoogieIcfgContainer [2019-10-22 09:00:13,568 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:00:13,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:13,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:13,568 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:13,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:10" (3/4) ... [2019-10-22 09:00:13,572 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:13,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:13,574 INFO L168 Benchmark]: Toolchain (without parser) took 4347.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 936.9 MB in the beginning and 879.3 MB in the end (delta: 57.6 MB). Peak memory consumption was 206.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,574 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:13,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -206.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.45 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,576 INFO L168 Benchmark]: Boogie Preprocessor took 52.46 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,576 INFO L168 Benchmark]: RCFGBuilder took 618.64 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,577 INFO L168 Benchmark]: BuchiAutomizer took 3303.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 882.1 MB in the end (delta: 223.8 MB). Peak memory consumption was 223.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,577 INFO L168 Benchmark]: Witness Printer took 4.27 ms. Allocated memory is still 1.2 GB. Free memory was 882.1 MB in the beginning and 879.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:13,580 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -206.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.45 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.46 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 618.64 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3303.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 882.1 MB in the end (delta: 223.8 MB). Peak memory consumption was 223.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.27 ms. Allocated memory is still 1.2 GB. Free memory was 882.1 MB in the beginning and 879.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. 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 2.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms 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...